Andrea Alu's webpage

JOURNAL PAPERS

Preprints (14 papers) 656. M. Pascale, S. A. Mann, D. C. Tzarouchis, G. Miano, A. Alù, and C. Forestiere, “Lower Bounds to Quality Factor of Small Radiators through Quasistatic Scattering Modes,” under review, since July 2021. (arxiv) 655. M. Pascale, S. A. Mann, C. Forestiere, and A. Alù, “On the Bandwidth of Singular Plasmonic Resonators in Relation to the Chu Limit,” under review, since July 2021. (arxiv) 654. G. Xu, Y. Yang, X. Zhou, H. Chen, A. Alù, and C. W. Qiu, “Diffusive Topological Transport in Spatiotemporal Thermal Lattices,” under review, since July 2021. (arxiv) 653. A. Krasnok, and A. Alù, “Low-Symmetry Photonics,” under review, since June 2021, (invited paper). (arxiv) 652. N. Passler, X. Ni, G. Hu, J. R. Matson, M. Wolf, M. Schubert, A. Alù, J. D. Caldwell, T. G. Folland, and A. Paarmann, “Hyperbolic Shear Polaritons in Low-Symmetry Crystals,” under review, since June 2021. (web) 651. O. Hemmatyar, S. Abdollahra mezani, A. Krasnok, S. Lepeshov, T. Brown, A. Alù, and A. Adibi, “Advanced Phase-Change Materials for Enhanced Meta-Displays,” under review, since May 2021. (arxiv, arxiv2) 650. Y. K. Chiang, L. Quan, Y. Peng, S. Sepehrirahnama, S. Oberst, A. Alù, and D. A. Powell, “Scalable Metagrating for Efficient Ultrasonic Focusing,” under review, since April 2021. (arxiv) 649. S. Abdollahramezani, O. Hemmatyar, M. Taghinejad, H. Taghinejad, A. Krasnok, A. A. Eftekhar, C. Teichrib, S. Deshmukh, M. El-Sayed, E. Pop, M. Wuttig, A. Alù, W. Cai, and A. Adibi, “Electrically Driven Reprogrammable Phase-Change Metasurfaces,” under review, since April 2021. (arxiv) 648. J. Soric, Y. Ra’di, D. Chachayma-Farfan, and A. Alù, “Radio-Transparent Dipole Antenna Based on a Metasurface Cloak,” under review, since April 2021. (arxiv) 647. Z. L. Deng, T. Shi, A. Krasnok, X. Li, and A. Alù, “Topologically Robust Skyrmion Combs,” under review, since April 2021. (arxiv) 646. J. Li, Y. Li, P. C. Cao, X. Zheng, Y. G. Peng, A. Alù., B. Li, W. Wang., S. Fan, X. F. Zhu, and C. W. Qiu, “Diffusive Reciprocity in Heat Transfer Under Time Modulation,” under review, since March 2021. (arxiv) 645. L. Huang, A. Krasnok, A. Alù, Y. Yu, D. Neshev, and A. E Miroshnichenko, “Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides,” under review, since March 2021. (arxiv) 644. Z. X. Chen, Y. G. Peng, H. X. Li, J. J. Liu, Y. J. Ding, B. Liang, X. F. Zhu, A. Alù, Y. Q. Lu, J. C. Cheng, “Experimental Observation of Efficient Nonreciprocal Sound Steering Based on Motionless Spatiotemporal Modulation,” under review, since March 2021. (arxiv) 643. S. C. Malek, A. C. Overvig, A. Alù, and N. Yu, “Resonant Wavefront-Shaping Flat Optics,” under review, since September 2020. (arxiv) In press (14 papers) 642. S. Guddala, F. Komissarenko, S. Kiriushechkina, A. Vakulenko, M. Li, V. Menon, A. Alù, and A. B. Khanikaev, “Topological Phonon Funneling in Mid-Infrared Polaritonic Metasurfaces,” Science, in press. 641. H. Li, S. Yin, E. Galiffi, and A. Alù, “Temporal Parity-Time Symmetry for Extreme Energy Transformations,” Physical Review Letters, in press. (arxiv) 640. A. Alù, C. Daraio, P. Deymier, and M. Ruzzene, “Topological Acoustics,” Acoustics Today, in press, (invited paper). 639. S. Yves, and A. Alù, “Extreme Anisotropy and Dispersion Engineering in Locally Resonant Acoustic Metamaterials,” Journal of the Acoustic Society of America, Special Issue on Additive Manufacturing, in press, (invited paper). 638. S. Mann, and A. Alù, “Broadband Topological Slow Light through Brillouin-Zone Winding,” Physical Review Letters, in press. 637. A. Krasnok, N. Nefedkin, and A. Alù, “Parity-Time Symmetry and Exceptional points: Tutorial,” IEEE Antennas and Propagation Magazine, in press, (invited paper). (arxiv) 636. Z. Xiao, and A. Alù, “Tailoring Exceptional Points in a Hybrid PT-Symmetric and Anti-PT-Symmetric Scattering System,” Nanophotonics, Special Issue in Honor of Prof. Mark Stockman, in press, (invited paper). (web) 635. C. Valagiannopoulos, A. Sarsen, and A. Alù, “Angular Memory of Photonic Metasurfaces,” IEEE Transactions on Antennas and Propagation, in press (published online on June 2, 2021). (web) 634. A. Alù, “Space-Time Metasurfaces,” Journal of Optics, in M. Piccardo, V. Ginis, A. Forbes, S. Mahler, A. A. Friesem, N. Davidson, H. Ren, A. H. Dorrah, F. Capasso, F. T. Dullo, B. S. Ahluwalia, A. Ambrosio, S. Gigan, N. Treps, M. Hiekkamäki, R. Fickler, M. Kues, D. Moss, R. Morandotti, J. Riemensberger, T. J. Kippenberg, J. Faist, G. Scalari, N. Picqué, T. W. Hänsch, G. Cerullo, C. Manzoni, L. A. Lugiato, M. Brambilla, L. Columbo, A. Gatti, F. Prati, A. Shiri, A. F. Abouraddy, A. Alù, E. Galiffi, J. B. Pendry, and P. A. Huidobro, “Roadmap on Multimode Light Shaping,” in press, (invited paper). (arxiv) 633. Q. Zhang, G. Hu, P. Li, A. Krasnok, R. Hillebrand, A. Alù, and C. W. Qiu, “Interface Optics with Van der Waals Polaritons,” Nature, in press. 632. J. Zhang, B. Peng, S. Kim, F. Monifi, X. Jiang, Y. Li, Y. X. Liu, A. Alù, and L. Yang, “Cavity Optomechanical Solitons,” Nature, in press. 631. A. Kord, and A. Alù, “Magnetless Circulators Based on Angular-Momentum Biasing,” IEEE Antennas and Propagation Magazine, in press (published online on January 1, 2021), (invited paper). (web, arxiv) 630. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “Optical Metasurfaces Based on Spheroidal Nanoparticles: Theory and Applications,” Radio Science Bulletin, in press. 629. A. Alù, C. Daraio, P. Deymier, S. Chavarria, and M. Ruzzene, “New Frontiers of Sound: A Quiet Revolution,” Scientia, in press (published online on June 3, 2020). (web, podcast) 2021 (56 papers) 628. M. Miscuglio, Y. Gui, X. Ma, Z. Ma, S. Sun, T. El Ghazawi, T. Itoh, A. Alù, and V. J. Sorger, “Approximate Analog Computing with Metatronic Circuits,” Communications Physics, Vol. 4, 196 (11 pages), August 26, 2021. (web, arxiv) 627. K. Chen, M. Weiner, M. Li, X. Ni, A. Alù, and A. B. Khanikaev, “Nonlocal Topological Insulators:Deterministic Aperiodic Arrays Supporting Localized Topological States Protected by Nonlocal Symmetries,” Proceedings of the National Academy of Sciences, Vol. 118, No. 34, e2100691118 (8 pages), August 24, 2021 (published online on August 19, 2021). (web, arxiv) 626. M. Farhat, P. Y. Chen, M. Amin, A. Alù, and Y. Wu, “Transverse Acoustic Spin and Torque from Pure Spinning of Objects,” Physical Review B (Letter), (Letter), Vol. 104, L060104 (6 pages), August 20, 2021. (web) 625. W. Ma, G. Hu, D. Hu, R. Chen, T. Sun, X. Zhang, Q. Dai, Y. Zeng, A. Alù, C. W. Qiu, and P. Li, “Ghost Hyperbolic Surface Polaritons in Bulk Anisotropic Crystals,” Nature, Vol. 596, pp. 362-366, August 19, 2021. (SharedIt, web) [Phys.org] 624. F. Shafiei, T. Orzali, A. Vert, M. A. Miri, P. Y. Hung, M. H. Wong, A. Alù, G. Bersuker, and M. C. Downer, “Detection of Subsurface, Nanometer-Scale Crystallographic Defects by Nonlinear Light Scattering and Localization,” Advanced Optical Materials, Vol. 9, No. 16, 2002252 (8 pages), August 18, 2021 (published online on June 6, 2021). (web, arxiv) 623. N. Janković, S. Ilić, V. Bengin, S. Birgermajer, V. Radonić, and A. Alù, “Acoustic Spoof Surface Plasmon Polaritons for Filtering, Isolation and Sensing,” Reports in Physics, iVol. 28, 104645 (7 pages), August 18, 2021 (published online on August 11, 2021). (web) 622. M. Cotrufo, S. A. Mann, H. Moussa, and A. Alù, “Nonlinearity-Induced Nonreciprocity – Part II,” IEEE Transactions on Microwave Theory and Techniques, Vol. 69, No. 8, pp. 3584-3597, August 7, 2021 (published online on June 2, 2021), (invited paper). (web) 621. M. Cotrufo, S. A. Mann, H. Moussa, and A. Alù, “Nonlinearity-Induced Nonreciprocity – Part I,” IEEE Transactions on Microwave Theory and Techniques, Vol. 69, No. 8, pp. 3569-3583, August 7, 2021 (published online on June 3, 2021), (invited paper). (web) 620. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “Design of High-Q Passband Filters Implemented Through Multipolar All-Dielectric Metasurfaces,” IEEE Transactions on Antennas and Propagation, Vol. 69, No. 8, pp. 5142-5147, August 5, 2021 (published online on December 24, 2020). (web) 619. X. Ni, S. Kim, and A. Alù, “Topological Insulator in Two Synthetic Dimensions Based on an Optomechanical Resonator,” Optica, Vol. 8, No. 8, pp. 1024-1032, July 23, 2021. (web) 618. C. Rasmussen, and A. Alù, “Non-Foster Acoustic Radiation From an Active Piezoelectric Transducer,” Proceedings of the National Academy of Sciences, Vol. 118, No. 30, e2024984118 (7 pages), July 27, 2021 (published online on July 19, 2021). (web) 617. M. Li, I. Sinev, F. Benimetskiy, T. Ivanova, E. Khestanova, S. Kiriushechkina, A. Vakulenko, S. Guddala, M. Skolnick, V. Menon, D. Krizhanovskii, A. Alù, A. Samusev, and A. B. Khanikaev, “Experimental Observation of Topological Z2 Exciton-Polaritons in Transition Metal Dichalcogenide Monolayers,” Nature Communications, Vol. 12, 4425 (10 pages), July 20, 2021. (web, arxiv) 616. Y. Mazor, M. Cotrufo, and A. Alù, “Unitary Excitation Transfer Between Coupled Cavities Using Temporal Switching,” Physical Review Letters, Vol. 127, 013902 (6 pages), July 2, 2021. (web) 615. H. Li, A. Mekawy, and A. Alù, “Gain-Free Parity-Time Symmetry for Evanescent Fields,” Physical Review Letters, Vol. 127, 014301 (7 pages), July 1, 2021. (web) 614. Z. Sakotic, A. Krasnok, A. Alù, and N. Jankovic, “Topological Scattering Singularities and Embedded Eigenstates for Polarization Control and Sensing Applications,” Photonics Research, Vol. 9, No. 7, pp. 1310-1323, July 2021 (published online on June 28, 2021). (web, arxiv) 613. S. Guddala, Y. Kawaguchi, F. Komissarenko, S. Kiriushechkina, A. Vakulenko, K. Chen, A. Alù, V. M. Menon, and A. B. Khanikaev, “All- Optical Nonreciprocity Due to Valley Polarization Pumping in Transition Metal Dichalcogenides,” Nature Communications, Vol. 12, 3746 (9 pages), June 18, 2021. (web, arxiv) 612. Y. Kawaguchi, M. Li, K. Chen, V. Menon, A. Alù, and A. B. Khanikaev, “Optical Isolator Based on Chiral Light-Matter Interactions in a Ring Resonator Integrating a Dichroic Magneto-Optical Material,” Applied Physics Letters, Special Topic Collection on Metastructures: From Physics to Application, Vol. 118, No. 24, 241104 (5 pages), June 15, 2021, (invited paper). (web) 611. A. Overvig, S. A. Mann, and A. Alù, “Thermal Metasurfaces: Complete Emission Control by Combining Local and Nonlocal Light-Matter Interactions,” Physical Review X, Vol. 11, 021050 (29 pages), June 4, 2021. (web) [APS Physics Focus, Press release, Nature Physics N&V] 610. C. Rasmussen, L. Quan, and A. Alù, “Acoustic Nonreciprocity,” Journal of Applied Physics, Special Issue on Acoustics 2021, Vol. 129, 210903 (12 pages), June 2, 2021, (invited paper). [Editor’s Pick, AIP SciLight] (web) 609. N. Nefedkin, A. Alù, and A. Krasnok, “Quantum Embedded Superstates,” Advanced Quantum Technologies, Vol. 4, No. 6, 2000121 (11 pages), June 2021 (published online on May 5, 2021). (web, arxiv) 608. M. Farhat, S. Guenneau, P. Y. Chen, A. Alù, and K. N. Salama, “Reply to “Comment on ‘Scattering Cancellation-Based Cloaking for the Maxwell-Cattaneo Heat Waves’”,” Physical Review Applied, Vol. 15, No. 5, 058002 (2 pages), May 28, 2021. (web) 607. A. Mekkawy, and A. Alù, “Hyperbolic Surface Wave Propagation in Mid-Infrared Metasurfaces with Extreme Anisotropy,” Journal of Physics: Photonics, Special Issue ‘Focus on Metaphotonics and Metaoptics', Vol. 3, No. 3, 034006 (9 pages), May 28, 2021, (invited paper). (web) 606. A. Mekawy, H. Li, Y. Ra’di, and A. Alù, “Parametric Enhancement of Radiation from Electrically Small Antennas,” Physical Review Applied, Vol. 15, 054063 (11 pages), May 27, 2021. (web) 605. G. Hu, C. Zheng, J. Ni, C. W. Qiu, and A. Alù, “Enhanced Light-Matter Interactions at Photonic Magic-Angle Topological Transitions,” Applied Physics Letters, Special Issue on Twisted 2D Electronic and Photonic Materials and Devices, Vol. 118, 211101 (6 pages), May 24, 2021, (invited paper). [Featured Article] (web) 604. J. Fang, M. Wang, K. Yao, T. Zhang, A. Krasnok, T. Jiang, J. Choi, E. Kahn, B. A. Korgel, M. Terrones, X. Li, A. Alù, and Y. Zheng, “Directional Modulation of Exciton Emission Using Dielectric Nanospheres,” Advanced Materials, Vol. 33, No. 20, 2007236 (8 pages), May 20, 2021 (published online on April 9, 2021). (web, arxiv) [Cover] 603. L. Quan, S. Yves, Y. Peng, H. Esfahlani, and A. Alù, “Odd Willis Coupling Induced by Broken Time-Reversal Symmetry,” Nature Communications, Vol. 12, 2615 (9 pages), May 10, 2021. (web, SharedIt) 602. A. Vakulenko, S. Kiriushechkina, M. Wang, M. Li, D. Zhirihin, X. Ni, S. Guddala, D. Korobkin, A. Alù, and A. B. Khanikaev, “Near‐Field Characterization of Higher‐Order Topological Photonic States at Optical Frequencies,” Advanced Materials, Vol. 33, No. 18, 2004376 (5 pages), May 6, 2021 (published online on March 18, 2021). (web, arxiv) [Cover] 601. X. Ni, and A. Alù, “Higher-Order Topolectrical Semimetal Realized via Synthetic Gauge Fields,” APL Photonics, Special Collection on Synthetic Gauge Field Photonics, Vol. 6, No. 5, 050802 (9 pages), May 3, 2021, (invited paper). (web) 600. P. Abdipour, A. N. Askarpour, and A. Alù, “Efficient Analysis of Wave Propagation in Metasurface Arrays Based on Eigenvalue Perturbation,” IEEE Transactions on Antennas and Propagation, Vol. 69, No. 5, pp. 2706-2714, May 2021 (published online on October 20, 2020). (web) 599. A. Nagulu, A. Mekkawy, M. Tymchenko, D. Sounas, A. Alù, and H. Krishnaswamy, “Ultra-Wideband Switched-Capacitor Delays and Circulators – Theory and Implementation,” IEEE Journal of Solid State Circuits, Vol. 56, No. 5, pp. 1412-1424, May 2021 (published online on February 12, 2021), (invited paper). (web) 598. G. Hu, M. Wang, Y. Mazor, C. W. Qiu, and A. Alù, “Tailoring Light with Layered and Moiré Metasurfaces,” Trends in Chemistry, Vol. 3, No. 5, pp. 342-358, May 1, 2021 (published online on March 9, 2021), (invited paper). [Cover] (web) 597. S. A. Mann, N. Nookala, S. C. Johnson, M. Cotrufo, A. Mekkawy, J. F. Klem, I. Brener, M. B. Raschke, A. Alù, and M. A. Belkin, “Ultrafast Optical Switching and Power Limiting in Intersubband Polaritonic Metasurfaces,” Optica, Vol. 8, No. 5, pp. 606-613, April 29, 2021. (web) 596. D. Chachayma-Farfan, Y. Ra’di, and A. Alù, “Dual-Layer Radio-Transparent Dielectric Core Metasurface Antenna,” IEEE Open Journal of Antennas and Propagation, Special Issue on Direct and Inverse Electromagnetic Scattering Methods, Vol. 2, pp. 585-590, April 26, 2021, (invited paper). (web) 595. A. Makkawy, D. L. Sounas, and A. Alù, “Free-Space Nonreciprocal Transmission Based on Nonlinear Coupled Fano Metasurfaces,” Photonics, Special Issue on Advances in Complex Media Electromagnetics, Vol. 8, No. 5, 139 (24 pages), April 23, 2021, (invited paper). (web) 594. G. Hu, C. W. Qiu, and A. Alù, “Twistronics for Photons: Opinion,” Optical Materials Express, Vol. 11, No. 5, pp. 1377-1382, April 8, 2021, (invited paper). (web) [Editor’s Pick] 593. R. Duggan, J. del Pino, E. Verhagen, D. Sounas, and A. Alù, “Nonlinearity-Driven Broken Degeneracy and Nonreciprocity,” FERMAT, Vol. 44, 4 (2 pages), April 4, 2021. (web) 592. M. Barbuto, A. Alù, F. Bilotti, and A. Toscano, “Dual-Circularly Polarized Topological Patch Antenna with Pattern Diversity,” IEEE ACCESS, Vol. 9, pp. 48769-48776, April 2, 2021 (published online on March 24, 2021). (web) 591. M. Coppolaro, M. Moccia, G. Castaldi, A. Alù, and V. Galdi, “Surface-Wave Propagation on Non-Hermitian Metasurfaces with Extreme Anisotropy,” IEEE Transactions on Microwave Theory and Techniques, Special Cluster on Metamaterials, Vol. 69, No. 4, pp. 2060-2071, April 1, 2021 (published online on March 3, 2021), (invited paper). (web, arxiv) 590. A. Cordaro, H. Kwon, D. Sounas, A. F. Koenderink, A. Polman, and A. Alù, “Mathematics at the Speed of Light,” FERMAT, Vol. 44, 2 (2 pages), April 1, 2021. (web) 589. G. Hu, A. Krasnok, Y. Mazor, C. W. Qiu, and A. Alù, “Topological Transitions and Polariton Canalization in Twisted Hyperbolic Surfaces,” FERMAT, Vol. 44, 1 (2 pages), April 1, 2021. (web) 588. S. A. Mann, A. Mekkawy, and A. Alù, “Broadband Field Localization, Density of States, and Nonlinearity Enhancement in Nonreciprocal and Topological Hotspots,” Physical Review Applied, Vol. 15, No. 3, 034064 (18 pages), March 22, 2021. (web) [Editors’Suggestion] 587. A. Overvig, and A. Alù, “Wavefront-Selective Fano Resonant Metasurfaces,” Advanced Photonics, Vol. 3, No. 2, 026002 (11 pages), March 18, 2021, (invited paper). (web) [Press release] [Cover] 586. F. Zangeneh-Nejad, D. L. Sounas, A. Alù, and R. Fleury, “Analogue Computing with Metamaterials,” Nature Reviews Materials, Vol. 6, No. 3, pp. 207-225, March 10, 2021 (published online on October 19, 2020). (web) [Cover] 585. H. Kwon, G. D’Aguanno, and A. Alù, “Optically Transparent Microwave Absorber Based on Water-Based Moth-Eye Structures,” Optics Express, Vol. 29, No. 6, pp. 9190-9198, March 9, 2021. (web) 584. D. Ramaccia, A. Alù, A. Toscano, and F. Bilotti, “Temporal Multilayer Structures for Designing Higher-Order Transfer Functions Using Time-Varying Metamaterials,” Applied Physics Letters, Special Collectionon Metamaterials, Vol. 118, No. 10, 101901 (7 pages), March 8, 2021, (invited paper). (web) 583. H. Esfahlani, Y. Mazor, and A. Alù, “Homogenization and design of Acoustic Willis Metasurfaces,” Physical Review B, Vol. 103, 054306 (11 pages), February 26, 2021. (web) 582. A. Overvig, N. Yu, and A. Alù, “Chiral Quasi-Bound States in the Continuum,”Physical Review Letters, Vol. 126, No. 7, 073001 (6 pages), February 17, 2021. (web, arxiv) 581. A. Prakash, T. Wang, A. Bucsek, T. Truttmann, A. Fali, M. Cotrufo, H. Yun, J. W. Kim, P. J. Ryan, K. A. Mkhoyan, A. Alù, Y. Abate, R. D. James, and B. Jalan, “Self-Assembled Periodic Nanostructures Using Martensitic Phase Transformations,” Nano Letters, Vol. 21, No. 3, pp. 1246-1252, February 10, 2021 (published online on December 2, 2020). (web, arxiv) [Cover] 580. C. Rasmussen, and A. Alù, “Compressibility-Near-Zero Acoustic Radiation,” Physical Review Applied, Vol. 15, No. 2, 024022 (8 pages), February 10, 2021. (web) 579. N. Jankovic, and A. Alù, “Glide-Symmetric Acoustic Waveguides for Extreme Sensing and Isolation,” Physical Review Applied, Vol. 15, No. 2, 024004 (13 pages), February 1, 2021. (web, arxiv) 578. X. Xu, H. Kwon, S. Finch, J. Y. Lee, L. Nordin, D. Wasserman, A. Alù, and A. Dodabalapur, “Reflecting Metagrating-Enhanced Thin-Film Organic Light Emitting Devices,” Applied Physics Letters, Vol. 118, No. 5, 053302 (5 pages), February 1, 2021. (web) 577. J. Li, M. Wang, Z. Wu, H. Li, G. Hu, T. Jiang, J. Guo, Y. Liu, K. Yao, Z. Chen, G. Hu, J. Fang, D. Fan, B. A. Korgel, A. Alù, and Y. Zheng, “Tunable Chiral Coupling in All-Solid-Phase Reconfigurable Dielectric Nanostructures,” Nano Letters, Vol. 21, No. 2, pp. 973-979, January 27, 2021 (published online on December 29, 2020). [Front Cover] (web) 576. A. Bergman, R. Duggan, K. Sharma, M. Tur, A. Zadok, and A. Alù, “Observation of Anti-Parity-Time-Symmetry, Phase Transitions and Exceptional Points in an Optical Fiber,” Nature Communications, Vol. 12, No. 486 (9 pages), January 20, 2021, (web, arxiv) 575. M. Tymchenko, A. Nagulu, H. Krishnaswamy, and A. Alù, “Universal Frequency-Domain Analysis of N-Path Networks,” IEEE Transactions on on Circuits and Systems, Vol. 68, No. 2, pp. 569-580, February 2021 (published online on December 7, 2020). (web) [Highlight of the Feb. 2021 Issue] 574. A. Alù, L. Pilozzi, H Xu, and J. Fan, “Introduction to the Topological Photonics and Beyond Feature Issue,” Photonics Research, Feature Issue on Topological Photonics and Beyond, Vol. 9, No. 1, pp. TPB1-TPB2, January 1, 2021 (published online on Deember 24, 2020), (invited paper). (web) 573. A. Mekawy, and A. Alù, “Giant Midinfrared Nonlinearity Based on Multiple Quantum Well Polaritonic Metasurfaces,” Nanophotonics, Special Issue Frontiers of Optics and Photonics, Vol. 10, No. 1, pp. 667-678, January 1, 2021 (published online September 14, 2020) , (invited paper). (web) 2020 (63 papers) 572. H. Li, and A. Alù, “Temporal Switching to Extend the Bandwidth of Thin Absorbers,” Optica, Vol. 8, No. 1, pp. 24-29, December 24, 2020. (web, arxiv) 571. F. Zangeneh-Nejad, A. Alù, and R. Fleury, “Topological Wave Insulators: A Review,” Comptes Rendus Physique, Vol. 21, No. 4-5, pp. 467- 499, Deember 16, 2020 (published online on November 3, 2020), (invited paper). (web) 570. S. Dong, G. Hu, Q. Wang, Y. Jia, Q. Zhang, G. Cao, J. Wang, S. Chen, D. Fan, W. Jiang, Y. Li, A. Alù, and C. W. Qiu, “Loss-Assisted Metasurface at an Exceptional Point,” ACS Photonics, Vol. 7, No. 12, pp. pp. 3321-3327, December 16, 2020 (published online on December 7, 2020). (web) 569. Z. Dai, G. Hu, G. Si, Q. Ou, Q. Zhang, S. Balendhran, F. Rahman, B. Y. Zhang, J. Z. Ou, G. Li, A. Alù, P. Alonso-González, C. W. Qiu, and Q. Bao, “Edge-Oriented and Steerable Hyperbolic Polaritons in Anisotropic Van der Waals Nanocavities,” Nature Communications, Vol. 11, No. 6086 (8 pages), November 30, 2020. (web) 568. K. Y. Yang, J. Skarda, A. Dutt, G. H. Ahn, M. Sawaby, D. Vercruysse, A. Arbabian, S. Fan, J. Vučković, M. Cotrufo, and A. Alù, “Nonreciprocal Devices in Silicon Photonics,” Optics and Photonics News, Special Issue Year in Optics 2020, Vol. 31, No. 12, p. 38, December 1, 2020 (published online November 23, 2020). (web, pdf) 567. P. Rocca, A. Alù, C. Caloz, and S. Yang, “Guest Editorial: Special Cluster on Space-Time Modulated Antennas and Materials,” IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 11, pp. 1838-1841, November 24, 2020. (web) 566. A. Li, J. Dong, J. Wang, Z. Cheng, J. S. Ho, D. Zhang, J. Wen, X. L. Zhang, C. T. Chan, A. Alù, C. W. Qiu, and L. Chen, “Hamiltonian Hopping for Efficient Chiral Mode Switching in Encircling Exceptional Points,” Physical Review Letters, Vol. 125, No. 18, 187403 (6 pages), October 30, 2020. (web) 565. Z. L. Deng, X. Ye., H. Y. Qiu, Q. A. Tu, T. Shi, Z. P. Zhuang, Y. Cao, B. O. Guan, N. Feng, G. P. Wang, P. Kapitanova, A. Alù, J. W. Dong, and X. Li, “Full-visible Transmissive Metagratings with Large Angle/Wavelength/Polarization Tolerance,” Nanoscale, Vol. 12, No. 40, pp. 20604-20609, October 28, 2020 (first published on September 19, 2020). (web, arxiv) 564. A. Alù, “Metamaterials for Next-Generation Communication Systems,” IEEE ComSoc Technology News, October 19, 2020. (web) 563. M. Wang, A. Krasnok, S. Lepeshov, G. Hu, T. Jiang, T. Jiang, J. Fang, B. A. Korgel, A. Alù, and Y. Zheng, “Suppressing Material Loss in the Visible and Near-Infrared Range for Functional Nanophotonics Using Bandgap Engineering,” Nature Communications, Vol. 11, No. 5055 (9 pages), October 7, 2020. (RedCube, web, arxiv) 562. A. Kord, D. Sounas, and A. Alù, “Magnet-Free Microwave Nonreciprocity,” Proceedings of IEEE, Vol. 108, No. 10, pp. 1728-1758, October 1, 2020 (published online on July 17, 2020), (invited paper). [Cover] (web) 561. A. Alù, “Magnet-Free Nonreciprocity,” Proceedings of IEEE, Vol. 108, No. 10, pp. 1682-1683, October 1, 2020 (published online on September 28, 2020), (invited paper). [Cover] (web) 560. R. Duggan, S. A. Mann, and A. Alù, “Non-Reciprocal Photonic Topological Order Driven by Uniform Optical Pumping,” Physical Review B, Rapid Communications, Vol. 102, No. 10, 100303(R), September 25, 2020. (web) 559. Y Luo, P Li, D. Li, Y. Peng, Z. Geng, S. Xie, Y. Li, A. Alù, J. Zhu, X. Zhu, “Probability-Density-Based Deep Learning Paradigm for the Fuzzy Design of Functional Meta-Structures,” Research, Vol. 2020, 8757403 (11 pages), September 22, 2020. (web) 558. E. Galiffi, Y. T. Wang, Z. Lim, J. B. Pendry, A. Alù, and P. A. Huidobro, “Wood Anomalies and Surface-Wave Excitation with a Time Grating,” Physical Review Letters, Vol. 125, No. 12, 127403 (6 pages), September 17, 2020. (web, arxiv) 557. H. Li, H. Moussa, D. Sounas, and A. Alù, “Parity-Time Symmetry Based on Time Modulation,” Physical Review Applied, Vol. 14, No. 3, 031002 (6 pages), September 11, 2020. (web) [Editor’s Pick, Letter] 556. Z. Zhang, M. Kang, X. Zhang, X. Feng, Y. Xu, X. Chen, H. Zhang, Q. Xu, Z. Tian, W. Zhang, A. Krasnok, J. Han, and A. Alù, “Coherent Perfect Diffraction in Controlled Metagratings,” Advanced Materials, Vol. 32, No. 36, 2002341 (6 pages), September 10, 2020 (published online on July 23, 2020). (web) [Cover, SUM] 555. H. Nassar, B. Yousefzadeh, R. Fleury, M. Ruzzene, A. Alù, C. Daraio, A. N. Norris, G. Huang, and M. R. Haberman, “Nonreciprocity in Acoustic and Elastic Materials,” Nature Reviews Materials, Vol. 5, pp. 667-685, September 1, 2020 (published online on July 6, 2020), (invited paper). (web) 554. S. A. Mann, D. L. Sounas, and A. Alù, “Nonreciprocal Cavities and the Time-Bandwidth Limit: Reply,” Optica, Vol. 7, No. 9, pp. 1102- 1107, August 28, 2020. (web) 553. T. E. Rimpiläinen, A. Alù, and A. H. Sihvola, “Implementing Radial Anisotropy with Self-Similar Structures,” Physical Review B, Vol. 102, No. 8, 085141 (11 pages), August 20, 2020. (web) 552. H. Esfahlani, M. S. Byrne, and A. Alù, “Acoustic Power Divider Based on Compressibility-Near-Zero Propagation,” Physical Review Applied, Vol. 14, No. 2, 024057 (11 pages), August 20, 2020. (web) 551. M. Moccia, G. Castaldi, A. Alù, and V. Galdi, “Line Waves in Non-Hermitian Metasurfaces,” ACS Photonics, Vol. 7, No. 8, pp. 2064- 2072, August 19, 2020 (published online on Julne 30, 2020). (web) 550. P. Li, G. Hu, I. Dolado, M. Tymchenko, C. W. Qiu, F. J. Alfaro-Mozaz, F. Casanova, L. E. Hueso, S. Liu, J. H. Edgar, S. Vélez, A. Alù, and R. Hillenbrand, “Collective Near-Field Coupling and Nonlocal Phenomena in Infrared-Phononic Metasurfaces for Nano-Light Canalization,” Nature Communications, Vol. 11, No. 3663 (8 pages), July 21, 2020. (web, arxiv) 549. H. Kwon, A. Cordaro, D. Sounas, A. Polman and A. Alù, “Dual-Polarization Analog 2D Image Processing with Nonlocal Metasurfaces,” ACS Photonics, Vol. 7, No. 7, pp. 1799-1805, July 17, 2020 (pubblished online on June 9, 2020). (web) 548. A. Darabi, X. Ni, M. Leamy, and A. Alù, “Reconfigurable Floquet Elastodynamic Topological Insulator Based on Synthetic Angular Momentum Bias,” Science Advances, Vol. 6, No. 19, eaba8656 (5 pages), July 17, 2020. (web) [Press release, Physics World, UPI, SUM] 547. Y. Mazor, and A. Alù, “Routing Optical Spin and Pseudospin with Metasurfaces,” Physical Review Applied, Vol. 14, No. 1, 014029 (11 pages), July 10, 2020. (web) 546. Z. Sakotic, A. Krasnok, N. Cselyuszka, N. Jankovic, and A. Alù, “Berreman Embedded Eigenstates for Narrow-Band Absorption and Thermal Emission,” Physical Review Applied, Vol. 13, 064073 (15 pages), June 30, 2020. (web, arxiv) 545. S. Abdollahramezani, O. Hemmatyar, H. Taghinejad, A. Krasnok, Y. Kiarashinejad, M. Zandehshahvar, A. Alù, and A. Adibi, “Tunable Nanophotonics Based on Chalcogenide Phase-Change Materials,” Nanophotonics, Vol. 9, No. 5, pp. 1189–1241, June 29, 2020 (published online on June 6, 2020), (invited paper). (web, arxiv) 544. Y. K. Chiang, S. Oberst, A. Melnikov, L. Quan, S. Marburg, A. Alù, and D. A. Powell, “Reconfigurable Acoustic Metagrating for High-Efficiency Anomalous Reflection,” Physical Review Applied, Vol. 13, No. 6, 064067 (8 pages), June 29, 2020. (web) 543. Y. J. Zhang, P. Li, V. Galdi, M. S. Tong, and A. Alù, “Manipulating the Scattering Pattern with Non-Hermitian Particle Arrays,” Optics Express, Vol. 28, No. 13, pp. 19492-19507, June 17, 2020. (web) 542. Y. Radi, A. Krasnok and A. Alù, “Virtual Critical Coupling,” ACS Photonics, Vol. 7, No. 6, pp. 1468-1475, June 17, 2020 (published online on May 7, 2020). (web, arxiv) [Cover] 541. Z. Xiao, D. L. Sounas, M. Tymchenko, A. Nagulu, M. Tymchenko, T. Dinc, H. Krishnaswamy, and A. Alù, “Role of Synchronization in Magnetless Nonreciprocal Devices Based on Commutated Transmission Lines,” Physical Review Applied, Vol. 13, No. 6, 064033 (29 pages), June 15, 2020. (web) 540. X. Ni, Z. Xiao, A. B. Khanikaev, and A. Alù, “Robust Multiplexing with Topolectrical Higher-Order Chern Insulators,” Physical Review Applied, Vol. 13, No. 6, 064031 (8 pages), June 12, 2020. (web) 539. G. Hu, Q. Ou, G. Si, Y. Wu, J. Wu, Z. Dai, A. Krasnok, Y. Mazor, Q. Zhang, Q. Bao, C. W. Qiu, and A. Alù, “Topological Polaritons and Photonic Magic Angles in Twisted α-MoO3 Bilayers,” Nature, Vol. 582, pp. 209-213, June 11, 2020. [Selected as Top 10 Breakthrough of the Year by Physics World] (SharedIt, web, arxiv, Physics World, Phys.org, Independent, Chemistry & Industry) 538. H. M. Bernety, A. B. Yakovlev, H. G. Skinner, S. Y. Suh, and A. Alù, “Decoupling and Cloaking of Interleaved Phased Antenna Arrays Using Elliptical Metasurfaces,” IEEE Transactions on Antennas and Propagation, Vol. 68, No. 6, pp. 4997-5002, June 2020 (published online on December 9, 2019). (web) 537. K. Y. Yang, J. Skarda, M. Cotrufo, A. Dutt, G. H. Ahn, M. Sawaby, D. Vercruysse, .A. Arbabian, S. Fan, A. Alù, and J. Vuckovic, “Inverse- Designed Non-Reciprocal Pulse Router for Chip-Based LiDAR,” Nature Photonics, Vol. 14, No. 6, pp. 369-374, May 29, 2020, published online on March 23, 2020. (web, SharedIt, arxiv) [News and Views, Press release, Ars Technica] 536. M. Farhat, S. Guenneau, A. Alù, and Y. Wu, “Scattering Cancellation Technique for Acoustic Spinning Objects,” Physical Review B, Vol. 101, 174111 (13 pages), May 20, 2020. (web, arxiv) 535. Z. L. Deng, M. Jin, X. Ye, S. Wang, T. Shi, J. Deng, N. Mao, Y. Cao, B. O. Guan, A. Alù, G. Li, and X. Li, “Full-Color Complex-Amplitude Vectorial Holograms Based on Multi-Freedom Metasurfaces,” Advanced Functional Materials, Vol. 30, No. 21, 1910610 (8 pages), May 20, 2020 (published online on March 12, 2020). (web, arxiv) [Cover] 534. H. Li, A. Mekawy, A. Krasnok, and A. Alù, “Virtual Parity-Time Symmetry,” Physical Review Letters, Vol. 124, No. 19, 193901 (7 pages), May 14, 2020. (web, arxiv) 533. G. Hu, A. Krasnok, Y. Mazor, C. W. Qiu, and A. Alù, “Moiré Hyperbolic Metasurfaces,” Nano Letters, Vol. 20, No. 5, pp. 3217-3224, May 13, 2020 (published online on Apil 16,2020). (web, arxiv) [Phys.org] 532. X. Ni, M. Li, M. Weiner, A. Alù, and A. B. Khanikaev, “Demonstration of a Quantized Acoustic Octupole Topological Insulator,” Nature Communications, Vol. 11, No. 2108 (7 pages), April 30, 2020. (web, arxiv) 531. A. Alù, J. Chennupati, and H. V. Demir “Active Nanophotonics,” Proceedings of IEEE, Vol. 108, No. 5, pp. 625-627, April 28, 2020, (invited paper). (web) 530. A. Krasnok, and A. Alù, “Active Nanophotonics,” Proceedings of IEEE, Vol. 108, No. 5, pp. 628-654, April 20, 2020, (invited paper). (web) 529. Y. Radi, and A. Alù., “Nonreciprocal Wavefront Manipulation in Synthetically Moving Metagratings,” Photonics, Special Issue for Metamaterials 2019, Vol. 7, No. 2, 28 (7 pages), April 18, 2020, (invited paper). (web) [Cover] 528. X. Wang, A. Diaz-Rubio, H. Li, S. A. Tretyakov, and A. Alù, “Theory and Design of Multifunctional Space-Time Metasurfaces,” Physical Review Applied, Vol. 13, No. 4, 044040 (15 pages), April 15, 2020. (web, arxiv) 527. M. Kang, Y. Radi, D. Farfan, and A. Alù, “Efficient Focusing with Large Numerical Aperture Using a Hybrid Metalens,” Physical Review Applied, Vol. 13, 04416 (9 pages), April 7, 2020. (web) 526. X. Hong, G. Hu, W. Zhao, K. Wang, S. Sun, R. Zhu, J. Wu, W. Liu, L. K. P. Loh, A. T. S. Wee, B. Wang, A. Alù, C. W. Qiu, and P. Lu, “Structuring Nonlinear Wavefront Emitted from Monolayer Transition-Metal Dichalcogenides,” Research, Vol. 2020, 9085782 (10 pages), April 5, 2020. (web, arxiv) 525. F. Uleman, V. Neder, A. Cordaro, A. Alù, and A. Polman, “Resonant Metagratings for Spectral and Angular Control of Light for Colored Rooftop Photovoltaics,” ACS Applpied Energy Materials, Vol. 3, No. 4, pp. 3150-3156, April 3, 2020. (web) 524. P. Osewski, A. Belardini, M. Centini, C. Valagiannopoulos, G. Leahu, R. Li Voti, M. Tomczyk, A. Alù, D. A. Pawlak, and C. Sibilia, “New Self-Organization Route to Tunable Narrowband Optical Filters and Polarizers Demonstrated with ZnO-ZnWO4 Eutectic Composite,” Advanced Optical Materials, Vol. 8, No. 7, 1901617 (10 pages), April 3, 2020. (web) [Inside front cover] 523. L. J. Fernández-Alcázar, H. Li, F. Ellis, A. Alù, and T. Kottos, “Robust Scattered Fields from Adiabatically Driven Targets around Exceptional Points,” Physical Review Letters, Vol. 124, No. 13, 133905 (6 pages), April 2, 2020. (web) 522. M. Weiner, X. Ni, M. Li, A. Alù, and A. Khanikaev, “Demonstration of a Third-Order Hierarchy of Topological States in a Three- Dimensional Acoustic Metamaterial,” Science Advances, Vol. 6, No. 13, 4166 (7 pages), March 27, 2020. (web, arxiv) 521. G. Hu, J. Shen, C. W. Qiu, A. Alù, and S. Dai, “Phonon Polaritons and Hyperbolic Response in Van Der Waals Materials,” Advanced Optical Materials, Special Issue on Polaritons in Nanomaterials, Vol. 8, No. 5, 1901393 (19 pages), March 5, 2020, (invited paper). (web) 520. M. Barbuto, M. A. Miri, A. Alù, F. Bilotti, and A. Toscano, “A Topological Design Tool for the Synthesis of Antenna Radiation Patterns,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1851- 1859, March 1, 2020. (web) 519. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “Surface Impedance Modeling of All-Dielectric Metasurfaces,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1799-1811, March 1, 2020. (web) 518. Y. Mazor, and A. Alù, “One-Way Hyperbolic Metasurfaces Based on Synthetic Motion,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1739-1747, March 1, 2020, (invited paper). (web, arxiv) 517. M. Moccia, G. Castaldi, A. Alù, and V. Galdi, “Harnessing Spectral Singularities in Non-Hermitian Cylindrical Structures,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1704-1716, March 1, 2020, (invited paper). (web, arxiv) 516. D. Ramaccia, D. L. Sounas, A. Alù, A. Toscano, and F. Bilotti, “Phase-Induced Frequency Conversion and Doppler Effect with Time- Modulated Metasurfaces,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1607-1617, March 1, 2020. (web) 515. A. Casolaro, A. Toscano, A. Alù, and F. Bilotti, “Dynamic Beam Steering with Reconfigurable Metagratings,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1542-1552, March 1, 2020, (invited paper). (web) 514. P. Abdipour, A. N. Askarpour, and A. Alù, “Metasurface Manipulation of Goos-Hänchen and Imbert-Fedorov Shifts,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1523-1532, March 1, 2020. (web) 513. A. Iyer, A. Alù, and A. Epstein, “Metamaterials and Metasurfaces—Historical Context, Recent Advances, and Future Directions,” IEEE Transactions on Antennas and Propagation, Special Issue on Recent Advances in Metamaterials and Metasurfaces, Vol. 68, No. 3, pp. 1223-1231, March 1, 2020, (invited paper). (web) 512. M. Farhat, P. Y. Chen, H. Bagci, K. N. Salama, A. Alù, and S. Guenneau, “Scattering Theory and Cancellation of Gravity-Flexural Waves of Floating Plates,” Physical Review B, Vol. 101, No. 1, 014307 (7 pages), Januay 28, 2020. (web) 511. M. Li, D. Zhirihin, M. Gorlach, X. Ni, D. Filonov, A. Slobozhanyuk, A. Alù, and A. B. Khanikaev, “Higher-Order Topological States in Photonic Kagome Crystals with Long-Range Interactions,” Nature Photonics, Vol. 14, pp. 89-94, December 9, 2019. (web, arxiv) [Press release] [Cover] 510. K. Chen, G. Ding, G. Hu, Z. Jin, J. Zhao, Y. Feng, T. Jiang, A. Alù, and C. W. Qiu, “Directional Janus Metasurface,” Advanced Materials, Vol. 32, No. 2, 1906352 (8 pages), January 16, 2020. (web) 2019 (64 papers) 509. D. V. Yakimchuk, E. Y. Kaniukov, S. Lepeshov, V. D. Bundyukova, S. E. Demyanov, G. M. Arzumanyan, N. V. Doroshkevich, K. Z. Mamatkulov, A. Bochmann, M. Presselt, O. Stranik, S. A. Khubezhov, A. E. Krasnok, A. Alù, and V. A. Sivakov, “Self-Organized Spatially Separated Silver 3D Dendrites as Efficient Plasmonic Nanostructures for Surface-Enhanced Raman Spectroscopy Applications,” Journal of Applied Physics, Vol. 126, No. 23, 233105 (8 pages), December 19, 2019. (web, arxiv) [Editor’s Suggestion] 508. G. D’Aguanno, Y. Hadad, D. A. Smirnova, X, Ni, A. Khanikaev, and A. Alù, “Nonlinear Topological Transitions Over a Metasurface,” Physical Review B, Vol. 100, No. 21, 214310 (8 pages), December 19, 2019. (web) [PRB Kaleidoscope] 507. L. Quan, and A. Alù, “Hyperbolic Sound Propagation over Nonlocal Acoustic Metasurfaces,” Physical Review Letters, Vol. 123, No. 24, 244303 (6 pages), Deecmber 13, 2019. (web) 506. C. K. Dass, H. Kwon, S. Vangala, E. M. Smith, J. W. Cleary, J. Guo, A. Alù, and J. R. Hendrickson, “Gap-Plasmon-Enhanced Second-Harmonic Generation in Epsilon-Near-Zero Nanolayers,” ACS Photonics, Vol. 7, No. 1, pp. 174-179, December 9, 2019. (web) 505. A. Krasnok, D. Baranov, H. Li, M. A. Miri, F. Monticone, and A. Alù, “Anomalies in Light Scattering,” Advances in Optics and Photonics, Vol. 11, No. 4, pp. 892-951, December 3, 2019, (invited paper). (web, arxiv) 504. Y. Yu, G. Michetti, M. Pirro, A. Kord, D. L. Sounas, Z. Xiao, C. Cassella, A. Alù, and M. Rinaldi, “Radio Frequency Magnet-Free Circulators Based on Spatiotemporal Modulation of Surface Acoustic Wave Filters,” IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 12, pp. 4773-4782, December 1, 2019. (web, arxiv) 503. Y. Yu, G. Michetti, A. Kord, M. Pirro, D. L. Sounas, Z. Xiao, C. Cassella, A. Alù, and M. Rinaldi, “Highly-Linear Magnet-Free Microelectromechanical Circulators,” Journal of Micro Electro-Mechanical Systems, Vol. 28, No. 6, pp. 933-940, December 1, 2019. (web) 502. A. Krasnok, L. Sun, C. Y. Wang, S. Gwo, C. K. Shih, X. Li, and A. Alù, “Metasurfaces for Valleytronics,” Optics and Photonics News, Year in Optics, Vol. 30, No. 12, p. 51, December 1, 2019. (web) 501. Z. Xiao, Y. Radi, S. Tretyakov, and A. Alù, “Microwave Tunneling and Robust Information Transfer Based on Parity-Time-Symmetric Absorber-Emitter Pairs,” Research, Vol. 2019, No. 7108494 (10 pages), November 28, 2019. (web) 500. Z. Xiao, H. Li, T. Kottos, and A. Alù, “Enhanced Sensing and Nondegraded Thermal Noise Performance Based on PT-Symmetric Electronic Circuits with a Sixth-Order Exceptional Point,” Physical Review Letters, Vol. 123, No. 21, 213901 (6 pages), November 18, 2019. (web) 499. N. Cselyuszka, A. Alù, and N. Jankovic, “Spoof-Fluid-Spoof Acoustic Waveguide and Its Applications for Sound Manipulation,” Physical Review Applied, Vol. 12, No. 5, 054014 (9 pages), November 6, 2019. (web) 498. A. Cordaro, H. Kwon, D. Sounas, A. F. Koenderink, A. Alù, and A. Polman, “High-Index Dielectric Metasurfaces Performing Mathematical Operations,” Nano Letters, Vol. 19, No. 12, pp. 8418-8423, November 1, 2019. (web, arxiv) [Press release, Laser Focus World, IEEE Spectrum] 497. C. Cassella, G. Michetti, M. Pirro, Y. Yu, A. Kord, D. Sounas, A. Alù, and M. Rinaldi, “Radio Frequency Angular Momentum Biased Quasi-LTI Nonreciprocal Acoustic Filters,” IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 66, No. 11, pp. 1814-1825, November 1, 2019. (web) 496. H. Li, A. Mekawy, and A. Alù, “Beyond Chu’s Limit with Floquet Impedance Matching,” Physical Review Letters, Vol. 123, No. 16, 164102 (6 pages), October 16, 2019. (web) 495. F. Monticone, D. Sounas, A. Krasnok, and A. Alù, “Can a Nonradiating Mode Be Externally Excited? Nonscattering States versus Embedded Eigenstates,” ACS Photonics, Vol. 6, No. 12, pp. 3108-3114, October 15, 2019. (web, arxiv) [Journal Cover] 494. R. Duggan, Y. Radi, and A. Alù, “Temporally and Spatially Coherent Emission from Thermal Embedded Eigenstates,” ACS Photonics, Vol. 6, No. 11, pp. 2949-2956, October 11, 2019. (web) 493. X. Zhou, X. Lin, Z. Xiao, T. Low, A. Alù, B. Zhang, and H. Sun, “Controlling Photonic Spin Hall Effect via Exceptional Points,” Physical Review B (web), Vol. 100, No. 11, 115429 (6 pages), September 18, 2019. (web) 492. M. Barbuto, A. Bassotti, A. Alù, F. Bilotti, and A. Toscano, “On the Topological Robustness of Vortex Modes at Microwave Frequencies,” Radio Engineering, Vol. 28, No. 3, pp. -504, September 1, 2019. (web, pdf) 491. R. Duggan, D. L. Sounas, and A. Alù, “Optically Driven Effective Faraday Effect in Instantaneous Nonlinear Media,” Optica, Vol. 6, No. 9, pp. 1152-1157, August 30, 2019. (web) 490. G. Trainiti*, Y. Radi*, M. Ruzzene, and A. Alù, “Coherent Virtual Absorption of Elastodynamic Waves,” Science Advances, Vol. 5, No. 8, 3255 (7 pages), August 30, 2019. (web) [Press release, Newsweek, SUM] 489. A. Kord, H. Krishnaswamy, and A. Alù, “Magnetless Circulators with Harmonic Rejection Based on N-Way Cyclic-Symmetric Time-Varying Networks,” Physical Review Applied, Vol. 12, No. 2, 024046 (14 pages), August 22, 2019. (web) 488. L. Quan, D. L. Sounas, and A. Alù, “Non-Reciprocal Willis Coupling in Zero-Index Moving Media,” Physical Review Letters, Vol. 123, No. 6, 064301 (6 pages), August 9, 2019. (web, arxiv) 487. M. Wang, Z. Wu, A. Krasnok, T. Zhang, M. Liu, H. Liu, L. Scarabelli, J. Fang, L. M. Liz-Marzán, M. Terrones, A. Alù, and Y. Zheng, “Dark-Exciton-Mediated Fano Resonance from a Single Gold Nanostructure Deposited on Monolayer WS2 at Room Temperature,” Small, Vol. 15, No. 31, 1900982 (8 pages), August 2, 2019. (web, arxiv) [Journal Cover] 486. M. Tymchenko, D. L. Sounas, A. Nagulu, H. Krishaswamy, and A. Alù, “Quasielectrostatic Wave Propagation Beyond the Delay- Bandwidth Limit in Switched Networks,” Physical Review X, Vol. 9, No. 3, 031015 (16 pages), July 31, 2019. (web) 485. C. P. Wiederhold, D. L. Sounas, and A. Alù, “Nonreciprocal Acoustic Propagation and Leaky-Wave Radiation in a Waveguide with Flow,” Journal of the Acoustical Society of America, Special Issue on Non-reciprocal and Topological Wave Phenomena in Acoustics, Vol. 146, No. 1, pp. 802-809, July 31, 2019. (web) 484. M. Li, X. Ni, M. Weiner, A. Alù, and A. B. Khanikaev, “Topological Phases and Nonreciprocal Edge States in Non-Hermitian Floquet Insulators,” Physical Review B, Vol. 100, No. 4, 045423 (9 pages), July 29, 2019. (web, arxiv) 483. S. A. Mann, D. L. Sounas, and A. Alù, “Broadband Delay Lines and Nonreciprocal Resonances in Unidirectional Waveguides,” Physical Review B, Rapid Communications, Vol. 100, No. 2, 020303R (5 pages), July 24, 2019. (web) 482. A. Melnikov, Y. K. Chang, L. Quan, S. Oberst, A. Alù, S. Marburg, and D. Powell, “Acoustic Meta-Atom with Experimentally Verified Maximum Willis Coupling,” Nature Communications, Vol. 10, No. 3148 (7 pages), July 17, 2019. (web, arxiv) 481. N. A. Mortensen, S. I. Bozhevolnyi, and A. Alù, “Topological Photonics,” Nanophotonics, Special Issue on Topological Photonics, Vol. 8, No. 8, pp. 1315-1317, July 16, 2019. (web) 480. M. A. Miri, M. Cotrufo, and A. Alù, “Anomalous Optical Forces in PT-Symmetric Waveguides,” Optics Letters, Vol. 44, No. 14, pp. 3558-3561, July 12, 2019. (web) 479. S. Lepeshov, A. Krasnok, and A. Alù, “Nonradiative-to-Superscattering Switch with Phase-Change Materials,” ACS Photonics, Vol. 6, No. 8, pp. 2126-2132, July 11, 2019. (web, arxiv) [Journal Cover] 478. R. Duggan, J. del Pino, E. Verhagen, and A. Alù, “Optomechanically Induced Birefringence and Optomechanically Induced Faraday Effect,” Physical Review Letters, Vol. 123, No. 2, 023602 (7 page), July 9, 2019. (web, arxiv) 477. A. Alù, “Active and Reconfigurable Metasurfaces,” Journal of Optics, in O. Quevedo-Teruel, H. Chen, A. Díaz-Rubio, G. Gok, A. Grbic, G. Minatti, E. Martini, S. Maci, G. V. Eleftheriades, M. Chen, N. I. Zheludev, N. Papasimakis, S. Choudhury, Z. A. Kudyshev, S. Saha, H. Reddy, A. Boltasseva, V. M. Shalaev, A. V. Kildishev, D. Sievenpiper, C. Caloz, A. Alù, Q. He, L. Zhou, G. Valerio, E. Rajo-Iglesias, Z. Sipus, F. Mesa, R. Rodríguez-Berral, F. Medina, V. Asadchy, S. Tretyakov, and C. Craeye, Topical Review, “Roadmap on Metasurfaces,” Vol. 21, 073002 (44 pages), July 1, 2019, (invited paper). (web) 476. A. Kord, M. Tymchenko, D. L. Sounas, H. Krishnaswamy, and A. Alù, “CMOS Integrated Magnetless Circulators Based on Spatiotemporal Modulation Angular-Momentum Biasing,” IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 7, pp. 2649-2662, July 1, 2019. (web, arxiv) 475. M. Cotrufo, and A. Alù, “Excitation of Single-Photon Embedded Eigenstates in Coupled Cavity-Atom Systems,” Optica, Vol. 6, No. 6, pp. 799-804, June 10, 2019. (web, arxiv) [Press release] 474. X. Ni, K. Chen, M. Weiner, D. J. Apigo, C. Prodan, A. Alù, E. Prodan, and A. B. Khanikaev, “Observation of the Hofstadter Butterfly and Topological Edge States in Reconfigurable Quasi-Periodic Acoustic Crystals,” Communication Physics, Vol. 2, No. 55 (7 pages), June 6, 2019. (web) 473. A. Mock, D. L. Sounas, and A. Alù, “Magnet-Free Circulator Based on Spatiotemporal Modulation of Photonic Crystal Defect Cavities,” ACS Photonics, Vol. 6, No. 8, pp. 2056-2066, May 28, 2019. (web) [Journal Cover] 472. L. Quan, and A. Alù, “Passive Acoustic Metasurface with Unitary Reflection Based on Nonlocality,” Physical Review Applied, Vol. 11, No. 5, 054077 (9 pages), May 28, 2019. (web) 471. D. G. Baranov, Y. Xiao, I. A. Nechepurenko, A. Krasnok, A. Alù, and M. Kats, “Nanophotonic Engineering of Far-Field Thermal Emitters,” Nature Materials, Vol. 18, pp. 920-930, May 27, 2019. (web, arxiv) 470. G. D’Aguanno, D. L Sounas, H. M. Sayed, and A. Alù, “Nonlinearity-Based Circulator,” Applied Physics Letters, Vol. 114, No. 18, 181102 (4 pages), May 7, 2019. (web) 469. L. Lin, S. Lepeshov, A. Krasnok, T. Jiang, X. Peng, B. A. Korgel, A. Alù, and Y. Zheng, “All-Optical Reconfigurable Chiral Metamolecules,” Materials Today, Vol. 25, pp. 10-20, May 1, 2019. (web) [This paper has been featured on the cover of the May 2019 issue] 468. Y. Mazor, and A. Alù, “Angular-Momentum Selectivity and Asymmetry in Highly Confined Wave Propagation Along Sheath-Helical Metasurface Tubes,” Physical Review B, Vol. 99, No. 15, 155425 (7 pages), April 25, 2019. (web, arxiv) 467. M. Farhat, S. Guenneau, P.-Y. Chen, A. Alù, and K. N. Salama, “Scattering Cancellation-Based Cloaking for the Maxwell-Cattaneo Heat Waves,” Physical Review Applied, Vol. 11, No. 4, 044089 (8 pages), April 29, 2019. (web, arxiv) 466. Y. J. Zhang, H. Kwon, M. A. Miri, E. Kallos, H. Cano-Garcia, M. S. Tong, and A. Alù, “Non-invasive Glucose Sensor Based on Parity- Time Symmetry,” Physical Review Applied, Vol. 11, No. 4, 044049 (12 pages), April 16, 2019. (web) 465. Y. Li, Y. G. Peng, L. Han, M. A. Miri, W. Li, M. Xiao, X. F. Zhu, J. Zhao, A. Alù, S. Fan, and C. W. Qiu, “Anti–Parity-Time Symmetry in Diffusive Systems,” Science, Vol. 364, No. 6436, pp. 170-173, April 12, 2019. (web) 464. S. Lepeshov, A. Krasnok, and A. Alù, “Enhanced Excitation and Emission from 2D Transition Metal Dichalcogenides with All–Dielectric Nanoantennas,” Nanotechnology, Focus Collection on Nanophotonics and Nano-Optics, Vol. 30, No. 25, 254004 (7pp), April 8, 2019, (invited paper). (web, arxiv) 463. H. Esfahlani*, M. S. Byrne*, M. McDermott, and A. Alù, “Acoustic Supercoupling in a Zero-Compressibility Waveguide,” Research, Vol. 2019, 2457870 (10 pages), March 24, 2019, (invited paper). (web, arxiv) 462. S. Peng, N. J. Schilder, X. Ni, J. van de Groep, M. L. Brongersma, A. Alù, A. B. Khanikaev, H. A. Atwater, and A. Polman, “Probing the Band Structure of Topological Silicon Photonic Lattices in the Visible Spectrum,” Physical Review Letters, Vol. 122, No. 11, 117401 (6 pages), March 21, 2019. (web) 461. M. Cotrufo, L. Sun, J. Choi, A. Alù, and X. Li, “Enhancing Functionalities of Atomically Thin Semiconductors with Plasmonic Nanostructures,” Nanophotonics, Vol. 8, No. 4, pp. 577- 598, March 20, 2019, (invited paper). (web) 460. T. Mukhopadhyay, S. Adhikari, and A. Alù, “Theoretical Limits for Negative Elastic Moduli in Subacoustic Lattice Materials,” Physical Review B, Vol. 99, No. 9, 094108 (7 pages), March 20, 2019. (web) 459. D. J. Ironside, R. Salas, P. Y. Chen, K. Q. Le, A. Alù, and S. R. Bank, “Enhancing THz Generation in Photomixers Using a Metamaterial Approach,” Optics Express, Vol. 27, No. 7, pp. 9481-9494, March 19, 2019. (web) 458. V. Neder, Y. Radi, A. Alù, and A. Polman, “Combined Metagratings for Efficient Broad-Angle Scattering Metasurface,” ACS Photonics, Vol. 6, No. 4, pp. 101-1017, March 18, 2019. (web) 457. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “The Design of Optical Circuit-Analog Absorbers Through Electrically Small Nanoparticles,” Photonics, Special Issue on Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2018, Vol. 6, No. 1, 26 (11 pages), March 6, 2019, (invited paper).(web) [Feature Paper, Editor’s Suggestion] 456. L. Li, H. Ruan, C. Liu, Y. Li, Y. Shuang, A. Alù, C. W. Qiu, and T. J. Cui, “Machine-Learning Reprogrammable Metasurface Imager,” Nature Communications, Vol. 10, 1082 (8 pages), March 6, 2019. (web, RedCube) 455. J. Zhao, X. Yang, J. Y. Dai, Q. Cheng, X. Li, N. H. Qi, J. C. Ke, G. D. Bai, S. Liu, S. Jin, A. Alù, and T. J. Cui, “Programmable Time-Domain Digital-Coding Metasurface for Non-Linear Harmonic Manipulation and New Wireless Communication Systems,” National Science Review, Vol. 6, No. 2, pp. 231-238, March 1, 2019. (web) [Press release] 454. Y. Liu, Z. Liang, J. Zhu, L. Xia, O. Mondain-Monval, T. Brunet, A. Alù, and J. Li, “Willis Metamaterial on a Structured Beam,” Physical Review X, Vol. 9, No. 1, 011040 (12 pages), February 28, 2019. (web, arxiv) 453. L. Sun, C. Y. Wang, A. Krasnok, J. Choi, J. Shi, J. S. Gomez-Diaz, A. Zepeda, S. Gwo, C. K. Shih, A. Alù, and X. Li, “Separation of Valley Excitons in a MoS2 Monolayer Using a Subwavelength Asymmewtric Groove Array,” Nature Photonics, Vol. 13, No. 3, pp. 180-184, Febrauary 11, 2019. (web, RedCube, arxiv) 452. S. Dai, J. Quan, G. Hu, C. W. Qiu, T. H. Tao, X. Li, and A. Alù, “Hyperbolic Phonon Polaritons in Suspended Hexagonal Boron Nitride,” Nano Letters, Vol. 19, No. 2, pp. 1009-1014, February 1, 2019. (web) 451. H. Kwon, H. Chalabi, and A. Alù, “Refractory Brewster Metasurfaces Control the Frequency and Angular Spectrum of Light Absorption,” Nanomaterials and Nanotechnology, Special Issue on Recent Advances and Trends in Optical Metamaterials and Metasurfaces, Vol. 9, pp. 1-7, January 27, 2019, (invited paper). (web) 450. A. Slobozhanyuk, A. V. Shchelokova, X. Ni, S. H. Mousavi, D. A. Smirnova, P. A. Belov, A. Alù, Y. S. Kivshar, and A. B. Khanikaev, “Near-Field Imaging of Spin-Locked Edge States in an All-Dielectric Topological Metasurfaces,” Applied Physics Letters, Vol. 114, No. 3, 031103 (5 pages), January 23, 2019. (web, arxiv) 449. S. Kang, Z. Qian, V. Rajaram, S. D. Calisgan, A. Alù, and M. Rinaldi, “Ultra-Narrowband Metamaterial Absorbers for High Spectral Resolution Infrared Spectroscopy,” Advanced Optical Materials, Vol. 7, No. 2, 1801236 (8 pages), January 18, 2019. (web) 448. S. A. Mann, D. L. Sounas, A. Alù, “Nonreciprocal Cavities and the Time-Bandwidth Limit,” Optica, Vol. 6, No. 1, pp. 104-110, January 17, 2019. (web, arxiv) [Press release] 447. Y. Mazor, and A. Alù, “Non-Reciprocal Hyperbolic Propagation over Moving Metasurfaces,” Physical Review B, Vol. 99, No. 4, 045407 (5 pages), January 8, 2019. (web, arxiv) 446. M. A. Miri, and A. Alù, “Exceptional Points in Optics and Photonics,” Science, Vol. 363, No. 6422, p. 42 (11 pages), January 4, 2019. (web) 2018 (63 papers) 445. X. Ni, M. Weiner, A. Alù, and A. B. Khanikaev, “Observation of Higher-Order Topological Acoustic States Protected by Generalized Chiral Symmetry,” Nature Materials, Vol. 18, No. 2, pp. 113-120, December 31, 2018. (SharedIt, web, arxiv) [News and Views, Phys.org, Nanowerk, UPI, NSD, R&D, Space Daily] 444. H. M. Doeleman, W. den Hollander, A. Alù, A. F. Koenderink, and F. Monticone, “Topological Bound States in the Continuum: A New Paradigm for Light Confinement,” FERMAT, Vol. 30, No. 4, December 24, 2018. (web) 443. A. Kord, D. L. Sounas, Z. Xiao, and A. Alù, “Broadband Cyclic-Symmetric Magnetless Circulators and Theoretical Bounds on their Bandwidth,” IEEE Transactions on Microwave Theory and Techniques, Special Issue for the 2018 International Microwave Symposium, Vol. 66, No. 12, pp. 5472-5481, December 12, 2018. (web, arxiv) 442. A. Alù, L. J. Lauhon, X. Li, C. K. Shih, and N. Stingelin, “Perspectives on Frontiers in Electronic and Photonic Materials,” MRS Bulletin, Vol. 43, No. 12, pp. 901-908, December 10, 2018. (web) 441. T. Mukhopadhyay, S. Adhikari, and A. Alù, “Probing the Frequency-Dependent Elastic Moduli of Lattice Materials,” Acta Materialia, Vol. 165, pp. 654-665, December 3, 2018. (web) 440. A. Krasnok, and A. Alù, “Coherent Optics for Energy Transfer, Storage and Release,” Optics and Photonics News, Year in Optics, Vol. 29, No. 12, p. 40, December 1, 2018. (web) 439. A. Kord, D. L. Sounas, and A. Alù, “Active Microwave Cloaking Using Parity-Time Symmetric Satellites,” Physical Review Applied, Vol. 10, No. 5, 054040 (15 pages), November 19, 2018. (web) 438. B. M. Gawlik, G. Cossio, H. Kwon, Z. Jurado, B. Palacios, S. Singhal, A. Alù, E. T. Yu, and S. V. Sreenivasan, “Structural Coloration with Hourglass-Shaped Vertical Silicon Nanopillar Arrays,” Optics Express, Vol. 26, No. 23, pp. 30952-30968, November 12, 2018. (web) [This paper has been selected as Editor’s Suggestion] 437. A. Nagulu, T. Dinc, Z. Xiao, M. Tymchenko, D. Sounas, A. Alù, and H. Krishnaswamy, “Nonreciprocal Components Based on Switched Transmission Lines,” IEEE Transactions on Microwave Theory and Techniques, Vol. 66, No. 11, pp. 4706-4725, November 1, 2018. (web, arxiv) 436. C. Caloz, and A. Alù, “Guest Editorial: Special Cluster on Magnetless Nonreciprocity in Electromagnetics,” IEEE Antennas and Wireless Propagation Letters, Special Cluster on Magnet- Less Nonreciprocity in Electromagnetics, Vol. 17, No. 11, pp. 1931-1937, October 29, 2018. (web) 435. H. Kwon,* D. L. Sounas,* A. Cordaro, A. Polman, and A. Alù, “Nonlocal Metasurfaces for Optical Signal Processing,” Physical Review Letters, Vol. 121, No. 17, 173004 (6 pages), October 24, 2018. (web) 434. D. Correas-Serrano, A. Alù, and J. S. Gomez-Diaz, “Magnetic-Free Non-Reciprocal Photonic Platform Based on Time-Modulated Graphene Capacitors,” Physical Review B, Vol. 98, No. 16, 165428 (10 pages), October 19, 2018. (web) 433. C. Caloz, A. Alù, S. Tretyakov, D. L. Sounas, K. Achouri, and Z. L. Deck-Leger, “Electromagnetic Nonreciprocity,” Physical Review Applied, Vol. 10, No. 4, 047001 (26 pages), October 1, 2018. (web, arxiv1, arxiv2) 432. G. Castaldi, A. Alù, and V. Galdi, “Boundary Effects of Weak Nonlocality in Multilayered Dielectric Metamaterials,” Physical Review Applied, Vol. 10, No. 3, 034060 (13 pages), September 26, 2018. (web, arxiv) 431. D. Ramaccia, D. L. Sounas, A. Alù, F. Bilotti, and A. Toscano, “Non-Reciprocity in Antenna Radiation Induced by Space-Time Varying Metamaterial Cloaks,” IEEE Antennas and Wireless Propagation Letters, Special Cluster on Magnet-Less Nonreciprocity in Electromagnetics, Vol. 17, No. 11, pp. 1968-1972, September 17, 2018. (web) 430. Z. Li, Q. Dai, M. Q. Mehmood, G. Hu, B. Lukyanchuk, J. Tao, C. Hao, I. Kim, H. Jeong, G. Zheng, S. Yu, A. Alù, J. Rho, and C. W. Qiu, “Full-Space Cloud of Random Points with a Scrambling Metasurface,” Light: Science & Applications, Vol. 7, No. 63 (8 pages), September 12, 2018. (web) 429. D. L. Sounas, N. A. Estep. A. Kord, and A. Alù, “Angular-Momentum Biased Circulators and Their Power Consumption,” IEEE Antennas and Wireless Propagation Letters, Special Cluster on Magnet-Less Nonreciprocity in Electromagnetics, Vol. 17, No. 11, pp. 1963-1967, September 4, 2018, (invited paper). (web) 428. A. Mock, D. L. Sounas, and A. Alù, “Tunable Orbital Angular Momentum Radiation from Angular Momentum-Biased Microcavities,” Physical Review Letters, Vol. 121, No. 10, 103901 (6 pages), September 4, 2018. (web) 427. D. L. Sounas, and A. Alù, “Non-Reciprocity Based on Nonlinear Resonances,” IEEE Antennas and Wireless Propagation Letters, Special Cluster on Magnet-Less Nonreciprocity in Electromagnetics, Vol. 17, No. 11, pp. 1958-1962, August 24, 2018, (invited paper). (web) 426. M. A. Miri, M. Cotrufo, and A. Alù, “Optical Gradient Forces between Evanescently Coupled Waveguides,” Optics Letters, Vol. 43, No. 17, pp. 4104-4107, August 17, 2018. (web) 425. M. Seaton, A. Krasnok, A. S. Bracker, A. Alù, and Y. Wu, “Localized All-Optical Control of Single Semiconductor Quantum Dots Through Plasmon-Polariton-Induced Screening,” Advanced Optical Materials, Vol. 6, No. 15, 1800345 (8 pages), August 6, 2018. (web, arxiv) 424. Y. Radi, B. Chowkwale, C. A. Valagiannopoulos, F. Lu, A. Alù, C. R. Simovski, and S. A. Tretyakov, “On-Site Wireless Power Generation,” IEEE Transactions on Antennas and Propagation, Vol. 66, No. 8, pp. 4260-4268, August 1, 2018. (web, arxiv) 423. A. Krasnok, and A. Alù, “Valley-Selective Response of Nanoantennas Coupled to 2D Transition-Metal Dichalcogenides,” Applied Sciences, Special Issue on Nano-Antennas, Vol. 8, No. 7, 1157 (14 pages), July 17, 2018, (invited paper). (web, arxiv) 422. S. Dai, M. Tymchenko, Z. Q. Xu, T. T. Tran, Y. Yang, Q. Ma, K. Watanabe, T. Taniguchi, P. Jarillo-Herrero, I. Aharonovich, D. N. Basov, T. H. Tao, and A. Alù, “Internal Nanostructure Diagnosis with Hyperbolic Phonon Polaritons in Hexagonal Boron Nitride,” Nano Letters, Vol. 18, No. 8, pp. 5205-5210, July 13, 2018. (web) 421. G. Moreno, A. B. Yakovlev, H. M. Bernety, D. H. Werner, H. Xin, A. Monti, F. Bilotti, and A. Alù, “Wideband Elliptical Metasurface Cloaks in Printed Antenna Technology,” IEEE Transactions on Antennas and Propagation, Vol. 66, No. 7, pp. 3512-3525, July 1, 2018. (web) 420. F. Monticone, and A. Alù, “Parity-Time Symmetric Nonlocal Metasurfaces: Focusing and Imaging Through Balanced Loss and Gain,” FERMAT, Vol. 28 No. 4 (24 pages), July- August, 2018. (web) 419. F. Monticone, and A. Alù, “Enhanced Focusing and Imaging Based on Parity-Time Symmetry and Nonlocality,” FERMAT, Vol. 23 No. 2 (2 pages), June 24, 2018. (web) 418. L. Quan, Y. Radi, D. L. Sounas, and A. Alù, “Maximum Willis Coupling in Acoustic Scatterers,” Physical Review Letters, Vol. 120, No. 25, 254301 (7 pages), June 20, 2018. (web, arxiv) 417. A. Alù, and H. Krishnaswamy, “Artificial Nonreciprocal Photonic Materials at GHz-to-THz Frequencies,” MRS Bulletin, Special Issue on Materials for Nonreciprocal Photonics, Vol. 43, No. 6, pp. 436-442, June 11, 2018, (invited paper). (web) 416. A. Krasnok, S. Lepeshov, and A. Alù, “Nanophotonics with 2D Transition Metal Dichalcogenides,” Optics Express, Special Issue for the 20th Anniversary of Optics Express, Vol. 26, No. 12, pp. 15972-15994, June 8, 2018, (invited paper). (web, arxiv) [This paper has been selected as Editor’s Suggestion] 415. A. Alù, V. Shalaev, M. Loncar, V. Sorger, “Metasurfaces – from Science to Applications,” Nanophotonics, Vol. 7, No. 6, June 5, 2018, (invited paper). (web) 414. H. M. Doeleman, F. Monticone, W. den Hollander, A. Alù, and A. F. Koenderink, “Experimental Observation of a Polarization Vortex at an Optical Bound State in the Continuum,” Nature Photonics, Vol. 12, pp. 397-401, June 4, 2018. (web) 413. A. Kord. D. L. Sounas, and A. Alù, “Pseudo-Linear-Time-Invariant Magnetless Circulators Based on Differential Spatio-Temporal Modulation of Resonant Junctions,” IEEE Transactions on Microwave Theory and Techniques, Vol. 66, No. 6, pp. 2731-2745, June 1, 2018. (web, arxiv) 412. M. Wang, A. Krasnok, T. Zhang, L. Scarabelli, H. Liu, Z. Wu, L. M. Liz-Marzán, M. Terrones, A. Alù, Y. Zheng, “Tunable Fano Resonance and Plasmon-Exciton Coupling in Single Au Nanotriangles on Monolayer WS 2 at Room Temperature,” Advanced Materials, Vol. 30, No. 22, 1705779 (8 pages), May 29, 2018. [This paper has been selected for a Frontispiece image] (web) 411. M. Barbuto, M. A. Miri, A. Alù, F. Bilotti, and A. Toscano, “Exploiting the Topological Robustness of Composite Vortices in Radiation Systems,” Progress in Electromagnetics Research, Vol. 172, pp. 39-50, May 28, 2018. (web) 410. A. Krasnok, and A. Alù, “Embedded Scattering Eigenstates Using Resonant Metasurfaces,” Journal of Optics, Special Issue on New Materials for Nanophotonics, Vol. 20, No. 6, 064002 (9 pages), May 18, 2018, (invited paper). (web, arxiv) 409. P. Y. Chen, M. Sakhdari, M. Hajizadegan, Q. Cui, M. Cheng, R. El-Ganainy, and A. Alù, “Generalized Parity-Time Symmetry Condition For Enhanced Sensor Telemetry,” Nature Electronics, Vol. 1, No. 5, pp. 297-304, May 14, 2018. (web, ReadIt) [A News and Views commentary by F. M. Ellis has appeared in the same issue; Press release] 408. X. Ni, D. Purtseladze, D. A. Smirnova, A. Slobozhanyuk, A. Alù, and A. B. Khanikaev, “Spin and Valley Polarized One-Way Klein Tunneling in Photonic Topological Insulators,” Science Advances, Vol. 4, No. 5, 8802 (10 pages), May 11, 2018. (web, arxiv) 407. F. Ruesink, J. P. Mathew, M. A. Miri, A. Alù, and E. Verhagen, “Optical Circulation in a Multimode Optomechanical Resonator,” Nature Communications, Vol. 9, 1798 (6 pages), May 4, 2018. (web, arxiv) [Phys.org] 406. C. A. Valagiannopoulos, E. Marengo, A. Dimakis, and A. Alù, “Aharonov-Bohm Tomographic Imaging,” IET Antennas and Propagation, Vol. 12, No. 12, pp. 1890-1894, May 4, 2018. (web) 405. X. Xu, H. Kwon, B. Gawlik, N. Mohammadi Estakhri, A. Alù, S. V. Sreenivasan, and A. Dodabalapur, “Enhanced Photoresponse in Metasurface-Integrated Organic Photodetectors,” Nano Letters, Vol 18, No. 6, pp. 3362-3367, April 30, 2018. (web) 404. S. Lepeshov, A. Gorodetsky, A. Krasnok, N. Toropov, T. A. Vartanyan, P. Belov, A. Alù, and E. U. Rafailov, “Boosting Terahertz Photoconductive Antenna Performance with Optimised Plasmonic Nanostructures,” Sceintific Reports, Vol. 8, No. 6624 (7 pages), April 26, 2018. (web, arxiv) [Top 100 physics Scientific Reports papers in 2018] 403. F. Monticone, H. M. Doeleman, W. Den Hollander, A. F. Koenderink, and A. Alù, “Trapping Light in Plain Sight: Embedded Photonic Eigenstates in Zero-Index Metamaterials,” Laser and Photonics Reviews, Vol. 12, No. 5, 1700220 (11 pages), April 16, 2018. (web, arxiv) 402. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “Metasurface-Based Anti-Reflection Coatings at Optical Frequencies,” Journal of Optics, Vol. 20, No. 5, 055001 (10 pages), April 16, 2018. (web) 401. S. Lepeshov, M. Wang, A. Krasnok, O. Kotov, T. Zhang, H. Liu, T. Jiang, B. Korgel, M. Terrones, Y. Zheng, and A. Alù, “Tunable Resonance Coupling Between a Single Si Nanoparticle-Monolayer WS 2 Structures,” ACS Applied Materials and Interfaces, Vol. 10, No. 19, pp. 16690-16697, April 13, 2018. (web) 400. M. A. Miri, G. D’Aguanno, and A. Alù, “Optomechanical Frequency Combs,” New Journal of Physics, Vol. 20, 043013 (9 pages), April 12, 2018. (web) 399. A. Christofi, Y. Kawaguchi, A. Alù, and A. Khanikaev, “Giant Enhancement of Faraday Rotation Due to Electromagnetically Induced Transparency in All-Dielectric Magneto- Optical Metasurfaces,” Optics Letters, Vol. 43, No. 8, pp. 1838-1841, April 11, 2018. (web) [This paper has been selected as Editor’s Suggestion] 398. A. Krasnok, D. G. Baranov, A. Generalov, S. Li, and A. Alù, “Coherently Enhanced Wireless Power Transfer,” Physical Review Letters, Vol. 120, No. 14, 143901 (5 pages), April 2, 2018. (web, arxiv) [This paper has been selected as PRL Editor’s Suggestion. This paper has been highlighted in the Focus article: P. Ball, Physics 11, 33 (2018)] 397. C. Qin, F. Zhou, Y. Peng, D. Sounas, X. Zhu, B. Wang, J. Dong, X. Zhang, A. Alù, and P. Lu, “Spectrum Control through Discrete Frequency Diffraction in the Presence of Photonic Gauge Potentials,” Physical Review Letters, Vol. 120, No. 13, 133901 (6 pages), March 27, 2018. (web) 396. D. Sounas, and A. Alù, “Fundamental Bounds on the Operation of Nonlinear Fano Isolators,” Physical Review B, Vol. 97, No. 11, 115431 (10 pages), March 20, 2018. (web) 395. S. Dai, M. Tymchenko, Y. Yang, Q. Ma, M. P. Vidal, K. Watanabe, T. Taniguchi, P. Jarillo-Herrero, M. M. Fogler, A. Alù, and D. N. Basov, “Manipulation and Steering of Hyperbolic Surface Polaritons in Hexagonal Boron Nitride,” Advanced Materials, Vol. 30, No. 16, 1706358 (5 pages), March 13, 2018. (web) 394. Y. Radi, and A. Alù, “Reconfigurable Metagratings,” ACS Photonics, Special Issue on Ultra-Capacity Metasurfaces with Low Dimension and High Efficiency, Vol. 5, No. 5, pp. 1779-1785, March 12, 2018, (invited paper). (web) 393. Y. Hadad, A. Khanikaev, and A. Alù, “Self-Induced Topological Protection in Nonlinear Circuit Arrays,” Nature Electronics, Vol. 1, pp. 178-182, March 9, 2018. [Science Daily] 392. H. Kwon, H. Chalabi, and A. Alù, “Broadband Absorption with Gradient Metasurfaces,” EPJ Applied Metamaterials, Special Issue for Metamaterials 2017, Vol. 5, No. 4 (7 pages), March 6, 2018, (invited paper). (web) 391. M. A. Gorlach, X. Ni, D. A. Smirnova, D. Korobkin, D. Zhirihin, A. P. Slobozhanyuk, P. A. Belov, A. Alù, and A. B. Khanikaev, “Far-Field Probing of Topological States in All-Dielectric Metasurfaces,” Nature Communications, Vol. 9, No. 9090 (8 pages), March 2, 2018. (SharedIt, web, arxiv) 390. A. Krasnok, M. Tymchenko, and A. Alù, “Nonlinear Metasurfaces: A Paradigm Shift in Nonlinear Optics,” Materials Today, Vol. 21, No. 1, pp. 8- 21, February 24, 2018, (published online on July 19, 2017), (invited paper). (web, arxiv) 389. R. Fleury, D. L. Sounas, and A. Alù, “Non-Reciprocal Optical Mirrors Based on Spatio-Temporal Acousto-Optic Modulation,” Journal of Optics, Special Issue on Emerging Leaders, Vol. 20, No. 3, 034007 (6 pages), February 12, 2018, (invited paper). (web, arxiv) 388. K. Frizyuk, M. Hasan, A. Krasnok, A. Alù, and M. Petrov, “Enhancement of Raman Scattering in Dielectric Nanostructures with Electric and Magnetic Mie Resonances,” Physical Review B, Vol. 97, No. 8, 085414 (8 pages), February 9, 2018. (web, arxiv) 387. D. L. Sounas, J. Soric, and A. Alù, “Broadband Passive Isolators Based on Coupled Nonlinear Resonances,” Nature Electronics, Vol. 1, pp. 113- 119, February 8, 2018. (ShareIt, web) [This paper has been featured on the cover of the February 2018 issue of Nature Electronics; A News and Views commentary by H. Krishnaswamy et al. has appeared in the same issue, Phys.org press release, Physics World article] 386. A. Kord, D. L. Sounas, and A. Alù, “Reconfigurable Magnet-Less Circulators Based on Spatiotemporal Modulation of Bandstop Filters in a Delta Topology,” IEEE Microwave Theory and Techniques, Vol. 66, No. 2, pp. 911-926, February 1, 2018 (published online on Oct. 13, 2017). (web, arxiv) 385. T. T. Koutserimpas, A. Alù, and R. Fleury, “Parametric Amplification and Bidirectional Invisibility in PT-Symmetric Time-Floquet Systems,” Physical Review A, Vol. 97, No. 1, 013839 (8 pages), January 24, 2018. (web, arxiv) [This paper has been selected as Editor’s Suggestion] 384. A. Krasnok, M. Caldarola, N. Bonod, and A. Alù, “Spectroscopy and Biosensing with Optically Resonant Dielectric Nanostructures,” Advanced Optical Materials, Special Issue for the 5th Anniversary, Vol. 6, No. 3, 1701094 (22 pages), January 22, 2018, (invited paper). (web, arxiv) [This paper has been featured on the front cover of the March 5, 2018 issue of Advanced Optical Materials] 383. A. E. Krasnok, S. V. Li, S. Lepeshov, R. S. Savelev, D. G. Baranov, and A. Alù, “All-Optical Switching and Unidirectional Plasmon Launching with Nonlinear Dielectric Nanoantennas,” Physical Review Applied, Vol. 9, No. 1, 014015 (8 pages), January 16, 2018. (web) 2017 (40 papers) 382. A. Kord, D. L. Sounas, and A. Alù, “Achieving Full-Duplex Communication: Magnetless Parametric Circulators for Full-Duplex Communication Systems,” IEEE Microwave Magazine, Vol. 19, No. 1, pp. 84-90, December 16, 2017, (invited paper). (web) 381. D. Sounas, and A. Alù, “Non-Reciprocal Photonics Based on Time Modulation,” Nature Photonics, Vol. 11, No. 12, pp. 774-783, November 30, 2017. (web, SharedIt) [This paper has been featured on the cover of the December 2017 issue of Nature Photonics] 380. D. G. Baranov, A. Krasnok, and A. Alù, “Coherent Virtual Absorption Based on Complex Zero Excitation for Ideal Light Capturing,” Optica, Vol. 4, No. 12, pp. 1457-1461, November 27, 2017. (web, arxiv) 379. H. T. Chorsi, Y. Lee, A. Alù, and J. X. J. Zhang, “Tunable Plasmonic Substrates with Ultrahigh Q-Factor Resonances,” Scientific Reports, Vol. 7, 15985 (9 pages), November 22, 2017. (web) 378. F. Monticone, C. Argyropoulos, and A. Alù, “Optical Antennas: Controlling Electromagnetic Scattering, Radiation, and Emission at the Nanoscale,” IEEE Antennas and Propagation Magazine, Special Issue on Optical Antennas, Vol. 59, No. 6, pp. 43-61, October 18, 2017, (invited paper). (web) 377. T. Dinc, M. Tymchenko, A. Nagulu, D. Sounas, A. Alù, and H. Krishnaswamy, “Synchronized Conductivity Modulation to Realize Broadband Lossless Magnetic-Free Nonreciprocity,” Nature Communications, Vol. 8, No. 795 (9 pages), October 6, 2017. (web, SharedIt) [TechXplore] 376. D. G. Baranov, A. E. Krasnok, T. Shegai, A. Alù, and Y. D. Chong, “Coherent Perfect Absorbers: Advanced Structures for Linear Control of Light with Light,” Nature Reviews Materials, Vol. 2, 17064 (14 pages), October 4, 2017. (web, arxiv) 375. E. Verhagen, and A. Alù, “Optomechanical Nonreciprocity,” Nature Physics, Vol. 13, No. 10, pp. 922-924, October 4, 2017, (invited paper). (web, SharedIt) 374. F. Monticone, and A. Alù, “Bound States within the Radiation Continuum in Diffraction Gratings and the Role of Leaky Modes,” New Journal of Physics, Vol. 19, 093011 (8 pages), September 14, 2017. (web) 373. C. F. Sieck, A. Alù, and M. R. Haberman, “Origins of Willis Coupling and Acoustic Bianisotropy in Acoustic Metamaterials through Source-Driven Homogenization,” Physical Review B, Vol. 96, No. 10, 104303 (20 pages), September 11, 2017. [This paper has been selected as Editor’s Suggestion] (web) 372. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “Narrowband Transparent Absorbers Based on Ellipsoidal Nanoparticles,” Applied Optics, Vol. 56 No. 27, pp. 7533-7538, September 11, 2017. (web) 371. A. Alù, “Designer Matter: Fascinating Interactions of Light and Sound with Metamaterials,” MRS Bulletin, Vol. 42, No. 9, pp. 677-682, September 8, 2017, (invited paper). (web) 370. M. Tymchenko, J. S. Gomez-Diaz, J. Lee, M. A. Belkin, and A. Alù, “Highly-Efficient THz Generation using Nonlinear Plasmonic Metasurfaces,” Journal of Optics, Special Issue on Low- Intensity Nonlinear Optics, Vol. 19, No. 10, 104001 (9 pages), August 29, 2017, (invited paper). (web) [[This paper has been selected as Journal of Optics’ Paper of the Week] 369. D. Correas-Serrano, A. Alù, and J. S. Gomez-Diaz, “Plasmon Canalization and Tunneling over Anisotropic Metasurfaces,” Physical Review B, Vol. 96, No. 075436 (9 pages), August 28, 2017. (web) 368. H. Chalabi, Y. Radi, D. L. Sounas, and A. Alù, “Efficient Anomalous Reflection Through Near-Field Interactions in Metasurfaces,” Physical Review B, Vol. 96, No. 7, 075432 (8 pages), August 22, 2017. (web) 367. Y. Radi, D. Sounas, and A. Alù, “Meta-Gratings: Beyond the Limits of Graded Metasurfaces for Wavefront Control,” Physical Review Letters, Vol. 119, No. 6, 067404 (6 pages), August 10, 2017. (web, arxiv) [This paper has been selected as Editor’s Suggestion] 366. A. Alù, and N. Engheta “Enabling A New Degree of Wave Control with Metamaterials: A Personal Perspective,” Journal of Optics, Special Issue on History of Metamaterials, Vol. 19, No. 8, 084008 (10 pages), July 21, 2017, (invited paper). (web) 365. A. Alù, “Topological Order Gets Active,” Nature Physics, Vol. 13, No. 11, pp. 1038-1039, July 17, 2017, (invited paper). (web, pdf) 364. Y. Hadad, V. Vitelli, and A. Alù, “Solitons and Propagating Domain-Walls in Topological Resonator Arrays,” ACS Photonics, Vol. 4, No. 8, pp. 1974-1979, June 28, 2017. (web) 363. G. Labate, A. Alù, and L. Matekovits, “Surface Admittance Equivalence Principle for Non-Radiating and Cloaking Problems,” Physical Review A, Vol. 95, No. 6, 063841 (6 pages), June 26, 2017. (web, arxiv) 362. J. Shi, M. H. Lin, I. T. Chen, N. Mohammadi Estakhri, X. Q. Zhang, Y. Wang, H. Y. Chen, C. A. Chen, C. K. Shih, A. Alù, X. Li, Y. H. Lee, and S. Gwo, “Cascaded Exciton Energy Transfer in a Monolayer Semiconductor Lateral Heterostructure Assisted by Surface Plasmon Polariton,” Nature Communications, Vol. 8, No. 35 (7 pages), June 26, 2017. (web) 361.