Andrea Alu's webpage

JOURNAL PAPERS

Preprints (13 papers) 745. A. Overvig, Y. Kasahara, G. Xu, and A. Alù, “Demonstration of a Polarization-Agnostic Geometric Phase in Nonlocal Metasurfaces,” under review, since February 2023. (arxiv) 744. J. R. Nolen, A. C. Overvig, M. Cotrufo, and A. Alù, “Arbitrarily Polarized and Unidirectional Emission from Thermal Metasurfaces,” under review, since January 2023. (arxiv) 743. F. Dirnberger, J. Quan, R. Bushati, G. Diederich, M. Florian, J. Klein, K. Mosina, Z. Sofer, X. Xu, A. Kamra, F. J. García-Vidal, A. Alù, and V. M. Menon, “Cavity-Controlled Magneto-Optical Properties of a Strongly Coupled Van der Waals Magnet,” under review, since January 2023. (web) 742. A. Khanikaev, and A. Alù, “Acoustic Pseudospins for Wave Control and Topological Protection,” under review, since January 2023. (arxiv) 741. M. Cotrufo, A. Arora, S. Singh, and A. Alù, “Dispersion Engineered Metasurfaces for Broadband, High-NA, High-Efficiency, Dual-Polarization Analog Image Processing,” under review, since December 2022. (arxiv) 740. E. Galiffi, G. Xu, S. Yin, H. Moussa, Y. Ra’di, and A. Alù, “Broadband Coherent Wave Control Through Photonic Collisions at Time Interfaces,” under review, since December 2022. (arxiv) 739. S. B. Chand, J. M. Woods, J. Quan, E. Mejia, T. Taniguchi, K. Watanabe, A. Alù, and G. Grosso, “Interaction-Driven Transport of Dark Excitons in 2D Semiconductors with Phonon-Mediated Readout,” under review, since November 2022. (arxiv) 738. X. Ni, S. Yves, A. Krasnok, and A. Alù, “Topological Metamaterials,” under review, since November 2022, (invited paper). (arxiv) 737. X. Jiang, S. Yin, H. Li, J. Quan, M. Cotrufo, J. Kullig, J. Wiersig, and A. Alù, “Coherent Perfect Absorption and Efficient Modal Control in Chaotic Optical Microresonators,” under review, since November 2022. (arxiv) 736. M. Cotrufo, A. Cordaro, D. L. Sounas, A. Polman, and A. Alù, “Passive Bias-Free Nonreciprocal Metasurfaces Based on Nonlinear Quasi-Bound States in the Continuum,” under review, since October 2022. (arxiv) 735. J. J. Liu, Z. W. Li, B. Liang, J. C. Cheng, and A. Alù, “Remote Water-to-air Eavesdropping through Phase-Engineered Impedance Matching Metasurfaces,” under review, since August 2022. (arxiv) 734. J. Ferdous, C. Yuce, A. Alù, and H. Ramezani, “Observation of Robust Zero Energy Extended States,” under review, since May 2022. (arxiv) 733. 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 May2021. (arxiv, arxiv2) In press (13 papers) 732. J. Klein, B. Pingault, M. Florian, M. C. Heißenbüttel, A. Steinhoff, Z. Song, K. Torres, F. Dirnberger, J. B. Curtis, T. Deilmann, R. Dana, R. Bushati, J. Quan, J. Luxa, Z. Sofer, A. Alù, V. M. Menon, U. Wurstbauer, M. Rohlfing, P. Narang, M. Lončar, F. M. Ross, “The Bulk van der Waals Layered Magnet CrSBr is a Quasi-1D Quantum Material,” ACS Nano, in press. (arxiv) 731. A. Mikhin, V. Rutckaia, R. S. Savelev, I. S. Sinev, A. Alù, and M. A. Gorlach, “Coherent Control of Topological States in an Integrated Waveguide Lattice,” Nano Letters, in press. (web, arxiv) 730. M. Moccia, G. Castaldi, A. Alù, and V. Galdi, “Leaky Waves in Flatland,” Advanced Optical Materials, in press, (invited paper). 729. K. Chen, F. Komissarenko, D. Smirnova, A. Vakulenko, S. Kiriushechkina, I. Volkovskaya, S. Guddala, V. Menon, A. Alù, and A. B. Khanikaev, “Photonic Emulation of Relativistic Trapping in Dirac Potentials,” Science Advances, in press. 728. Z. Sakotic, P. Stankovic, V. Bengin, A. Krasnok, A. Alù, and N. Jankovic, “Observation of Topological Features Around Scattering Matrix Singularities,” Laser and Photonics Reviews, in press. (arxiv) 727. S. Yin, E. Galiffi, G. Xu, and A. Alù, “Scattering at Temporal Interfaces,” IEEE Antennas and Propagation Magazine, Special Issue on Time Metamaterials, in press, (invited paper). 726. 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,”IEEE Transactions on Antennas and Propagation, in press (published online on February 28, 2023). (web, arxiv) 725. H. Huang, A. C. Overvig, Y. Xu, S. C. Malek, C. C. Tsai, A. Alù, and N. Yu, “Leaky-Wave Metasurfaces for Integrated Photonics,” Nature Nanotechnology, in press. 724. S. A. Mann, H. Goh, and A. Alù, “Inverse Design of Nonlinear Polaritonic Metasurfaces for Second Harmonic Generation,” ACS Photonics, Special Issue on Inverse Design in Nanophotonics, in press, (invited paper). (web) 723. H. Moussa, G. Xu, S. Yin, E. Galiffi, Y. Ra’di, and A. Alù, “Observation of Time-Reflection and Broadband Frequency Conversion at Photonic Time-Interfaces,” Nature Physics, in press (published online on March 13, 2023). (web, SharedIt, arxiv) [Press release, Behind the paper, The Independent] 722. A. Cordaro, B. Edwards, V. Nikkhah, A. Alù, N. Engheta, and A. Polman, “Solving Integral Equations in Free-Space with Inverse-Designed Ultrathin Optical Metagratings,” Nature Nanotechnology, in press (published online on January 12, 2023). (web, arxiv) 721. N. Nefedkin, A. Mekawy, J. Krakofsky, Y. Wang, A. Belyanin, M. Belkin, and A. Alù, “Overcoming Intensity Saturation in Nonlinear Multiple-Quantum-Well Metasurfaces for High-Efficiency Frequency Upconversion,” Advanced Materials, Special Issue on Photonic Nanomaterials, in press (published online on November 13, 2021), (invited paper). (web) 2023 (8 papers) 720. H. Li, S. Yin, H. He, J. Xu, A. Alù, and B. Shapiro, “Stationary Charge Radiation in Anisotropic Photonic Time Crystals,” Physical Review Letters. Vol. 130, 093803 (6 pages), March 3, 2023. (web, arxiv) 719. A. Alù, “Tarnkappen für Licht und Schall,” Spektrum der Wissenschaft, Vol. 3.23, March 1, 2023, (invited paper). (web) 718. N. Nefedkin, M. Cotrufo, and A. Alù, “Nonreciprocal Total Cross Section of Quantum Metasurfaces,” Nanophotonics, Special Issue on Quantum Nanophotonics, Vol. 12, No. 3, pp. 589-606, February 10, 2023 (published online on January 9, 2023), (invited paper). (web, arxiv) 717. A. Alù, “Ces Matériaux Qui Domptent les Ondes,” Pour la Science, Vol. 544, pp. 54-63, February 1, 2023 (published online on January 23, 2023), (invited paper). (web) 716. A. Alù, “New Topic Categories for Optical Materials Express: Editorial,” Optical Materials Express, Vol. 13, No. 2, pp. 434-435, January 17, 2023. (web) 715. J. Klein, Z. Song, B. Pingault, F. Dirnberger, H. Chi, J. B. Curtis, R. Dana, R. Bushati, J. Quan, L. Dekanovsky, Z. Sofer, A. Alù, V. M. Menon, J. S. Moodera, M. Loncar, P. Narang, and F. M. Ross, “Sensing the Local Magnetic Environment Through Optically Active Defects in a Layered Magnetic Semiconductor,” ACS Nano, Vol. 17, No. 1, pp. 288-299, January 10, 2023 (published online on December 20, 2022). (web, arxiv) 714. G. Hu, W. Ma, D. Hu, J. Wu, C. Zheng, K. Liu, X. Zhang, X. Ni, J. Chen, X. Zhang, Q. Dai, J. D. Caldwell, A. Paarmann, A. Alù, P. Li, and C. W. Qiu, “Real-Space Nanoimaging of Hyperbolic Shear Polaritons in a Monoclinic Crystal,” Nature Nanotechnology, Vol. 18, No. 1, pp. 64-70, January 2023 (published online on December 12, 2022). (web) 713. A. Alù, “Giochi di Luce,” Le Scienze, Vol. 653, pp. 58-67, January 2023, (invited paper). (web) 2022 (62 papers) 712. S. Yin, Y. T. Wang, and A. Alù, “Temporal Optical Activity and Chiral Time-Interfaces,” Optics Express, Feature Issue on Time Metamaterials, Vol. 30, No. 26, pp. 47933-47941, December 15, 2022, (invited paper). (web) 711. T. Kananen, M. Wiggins, Z. Wang, F. Wang, A. Soman, K. Booksh, A. Alù, and T. Gu, “Graphene Absorption Enhanced by Quasi-Bound- State-in-Continuum in Long-Wavelength Plasmonic-Photonic System,” Advanced Optical Materials, Vol. 10, No. 23, 2201193 (6 pages), December 5, 2022 (published online on September 7, 2022). (web) 710. R. Tirole, E. Galiffi, J. Dranczewski, T. Attavar, B. Tilmann, Y. T. Wang, P. Arroyo-Huidobro, A. Alù, J. B. Pendry, S. A. Maier, S. Vezzoli, and R. Sapienza, “Saturable Time-Varying Mirror Based on an Epsilon-Near-Zero Material,” Physical Review Applied, Vol. 18, No. 05, 054067 (7 pages), November 21, 2022. (web, arxiv) 709. S. Yves, X. Ni, and A. Alù, “Topological Sound in Two Dimensions,” Annals of the New York Academy of Sciences, Vol. 1517, No. 1, pp. 63-77, November 17, 2022 (published online on September 7, 2022), (invited paper). (web) 708. S. Y. Cho, J. Sun, A. Overvig, A. Alù, and W. Zhou, “Control of Quasibound Waves in Spiral Metasurfaces,” ACS Photonics, Vol. 9, No. 11, pp. 3592-3599, November 16, 2022 (published online on October 25, 2022). [Cover] (web) 707. Z. H. Zarghani, A. Monti, A. Alù, F. Bilotti, and A. Toscano, “Acoustic Embedded Eigenstates in Metasurface-Based Structures,” Applied Physics Letters, Special Issue on Acoustic Metamaterials, Vol. 121, 192202 (7 pages), November 10, 2022. (web) 706. S. Kim, S. Lepeshov, A. Krasnok, and A. Alù, “Beyond Bounds on Light Scattering with Complex Frequency Excitations,” Physical Review Letters, Vol. 129, No. 20, 203601 (6 pages), November 8, 2022. (web, arxiv) 705. A. Alù, “Metasurfaces for Next-Generation Communication Systems,” in G. Gradoni, M. Di Renzo, A. Diaz-Rubio, S. Tretyakov, C. Caloz, Z. Peng, A. Alù, G. Lerosey, M. Fink, V. Galdi, T. J. Cui, B. Frazier, S. Anlage, M. Salucci, A. Massa, Q. Cheng, J. Wang, S. Jin, D. Dardari, N. Decarli, O. Yurduseven, M. Matthaiou, M. Kenney, G. Gordon, O. Georgiou, C. L. Nguyen, E. Martini, S. Maci, H. Wakatsuchi, and S. Phang, “Roadmap on Smart Radio Environments,” Reviews of Electromagnetics, Vol. 1, No. 1, 21012 (42 pages), November 7, 2022, (invited paper). (web, arxiv) 704. Y. Chen, S. Qian, K. Wang, X. Xing, A. Wee, K. P. Loh, B. Wang, D. Wu, J. Chu, A. Alù, P. Lu, and C. W. Qiu, “Chirality-Dependent Unidirectional Routing of WS2 Valley Photons in a Nanocircuit,” Nature Nanotechnology, Vol. 17, No. 11, pp. 1178-1182, November 2022 (published online on October 3, 2022). (web) 703. A. Alù, “Tricking Light,” Scientific American, Vol. 327, No. 5, pp. 42-51, November 2022 (published online on October 19, 2022), (invited paper). (web) [Press release] 702. M. Weiner, X. Ni, A. Alù, and A. B. Khanikaev, “Synthetic Pseudo-Spin-Hall Effect in Acoustic Metamaterials,” Nature Communications, Vol. 13, No. 6332 (7 pages), October 25, 2022. (web) 701. Y. Lang, Q. Xu, X. Chen, J. Han, X. Jiang, Y. Xu, M. Kang, X. Zhang, A. Alù, J. Han, and W. Zhang, “On-Chip Plasmonic Vortex Interferometers,” Laser and Photonics Reviews, Vol. 16, No. 10, 2200242 (9 pages), October 1, 2022 (published online on August 7, 2022). (web) [Cover] 700. A. Alù, “New OMEx Deputy Editor,” Optical Materials Express, Vol. 12, No. 10, p. 4182, September 29, 2022, (invited paper). (web) 699. L. Stefanini, S. Yin, D. Ramaccia, A. Alù, A. Toscano, and F. Bilotti, “Temporal Interfaces by Instantaneously Varying Boundary Conditions,” Physical Review B, Vol. 106, No. 9, 094312 (6 pages), September 23, 2022. (web, arxiv) 698. S. Yves, Y. G. Peng, and A. Alù, “Topological Lifshitz Transition in Twisted Hyperbolic Acoustic Metasurfaces,” Applied Physics Letters, Special Clurster on Acoustic Metamaterials and Metasurfaces, Vol. 121, 122201 (7 pages), September 20, 2022, (invited paper). (web) [Cover, Editor’s Pick] 697. A. Farhi, A. Mekawy, A. Alù, and D. Stone, “Excitation of Absorbing Exceptional Points in the Time Domain,” Physical Review A, Vol. 106, L031503 (6 pages), September 15, 2022. (web, arxiv) 696. A. Li, W. Chen, H. Wei, G. Lu, A. Alù, C. W. Qiu, and L. Chen, “Riemann-Encircling Exceptional Points for Efficient Asymmetric Polarization-Locked Devices,” Physical Review Letters, Vol. 129, 127401 (6 pages), September 13, 2022. (web) 695. E. Galiffi, S. Yin, and A. Alù, “Tapered Photonic Switching,” Nanophotonics, Vol. 11, No. 16, pp. 3575-3581, August 17, 2022 (published online on July 20, 2022). (web, arxiv) [Press release] 694. M. Kang, Z. Zhang, T. Wu, X. Zhang, Q. Xu, A. Krasnok, J. Han, and A. Alù, “Coherent Full Polarization Control Based on Bound States in the Continuum,” Nature Communications, Vol. 13, No. 4536 (9 pages), August 4, 2022. (web) 693. N. A. Aghamiri, G. Hu, A. Fali, Z. Zhang, J. Li, S. Balendhran, S. Walia, S. Sriram, J. H. Edgar, S. Ramanathan, A. Alù, and Y. Abate, “Reconfigurable Hyperbolic Polaritonics with Correlated Oxide Metasurfaces,” Nature Communications, Vol. 13, No. 4511 (9 pages), August 3, 2022. (web, arxiv) 692. S. C. Malek, A. C. Overvig, A. Alù, and N. Yu, “Multifunctional Resonant Wavefront-Shaping Meta-Optics Based on Multilayer and Multi- Perturbation Nonlocal Metasurfaces,” Light, Vol. 11, No, 246 (13 pages), August 3, 2022. (web, arxiv) 691. A. Overvig, and A. Alù, “Diffractive Nonlocal Metasurfaces,” Laser and Photonics Reviews, Special Issue 15th Anniversary Laser and Photonics Reviews, Vol. 16, No. 8, 2100633 (16 pages), August 1, 2022 (published online on July 3, 2022), (invited paper). (web) [Cover] 690. Q. Zhang, Q. Ou, G. Si, G. Hu, S. Dong, Y. Chen, J. Ni, C. Zhao, M. S. Fuhrer, Y. Yang, A. Alù, R. Hillenbrand, and C. W. Qiu, “Unidirectional Excited Phonon Polaritons in High-Symmetry Orthorhombic Crystals,” Science Advances, Vol. 8, No. 30, eabn9774 (8 pages), July 29, 2022. (web) 689. M. Wang, G. Hu, S. Chand, M. Cotrufo, Y. Abate, K. Watanabe, T. Taniguchi, G. Grosso, C. W. Qiu, and A. Alù, “Spin-Orbit-Locked Hyperbolic Polariton Vortices Carrying Reconfigurable Topological Charges,” E-Light, Vol. 2, No. 12 (11 pages), July 18, 2022. (web) [Cover, Press release] 688. T. Shi, Z. L. Deng, G. Geng, X. Zeng, Y. Zeng, G. Hu, A. Overvig, J. Li, C. W. Qiu, A. Alù, Y. S. Kivshar, and X. Li, “Planar Chiral Metasurfaces With Maximal Tunable Chiroptical Response Driven by Bound States in the Continuum,” Nature Communications, Vol. 13, No. 4111 (8 pages), July 15, 2022. (web, arxiv) 687. J. Shin, Y. Ryu, M. A. Miri, S. B. Shim, H. Choi, A. Alù, J. Suh, and J. Cha, “On-Chip Microwave Frequency Combs in a Superconducting Nanoelectromechanical Device,” Nano Letters, Vol. 22, No. 13, pp. 5459-5465, July 13, 2022 (published online on June 16, 2022). (web) 686. Y. W. Tsai, Y. T. Wang, E. Galiffi, A. Alù, and T. J. Yen, “Surface-Wave Coupling in Double Floquet Sheets Supporting Phased Temporal Wood Anomalies,” Nanophotonics, Vol. 11, No. 15, pp. 3509-3517, July 11, 2022. (web, arxiv) 685. A. Alù, “Nonlinear Topological Photonics,” Journal of Physics: Photonics, in H. Price, Y. Chong, A. Khanikaev, H. Schomerus, L. J. Maczewsky, M. Kremer, M. Heinrich, A. Szameit, O. Zilberberg, Y. Yang, B. Zhang, A. Alù, R. Thomale, I. Carusotto, P. St-Jean, A. Amo, A. Dutt, L. Yuan, S. Fan, X. Yin, C. Peng, T. Ozawa, and A. Blanco-Redondo, “Roadmap on Topological Photonics,” Vol. 4, No. 3, 032501 (45 pages), July 1, 2022 (published online on January 25, 2022), (invited paper). (web, arxiv) 684. I. Liberal, A. Alù, and N. Engheta, “Zero-Index Metamaterials for Classical and Quantum Light,” Applied Physics Letters, Speical Cluster on Zero-Index Metamaterials, Vol. 120, 260401 (2 pages), July 1, 2022, (invited paper). (web) 683. F. B. Arango, F. Alpeggiani, D. Conteduca, A. Opheij, A. Chen, M. I. Abdelrahman, T. Krauss, A. Alù, F. Monticone, and L. Kuipers, “Cloaked Near-Field Probe for Non-Invasive Near-Field Optical Microscopy,” Optica, Vol. 9, No. 7, pp. 684-691, June 21, 2022. (web, arxiv). 682. R. E. Jacobsen, A. Krasnok, S. Arslanagić, A. V. Lavrinenko, and A. Alù, “Boundary-Induced Embedded Eigenstates in a Single Resonator for Advanced Sensing,” ACS Photonics, Vol. 9, No. 6, pp. 1936-1943, June 15, 2022 (published online on April 8, 2022). (web, arxiv) [Cover] 681. Z. L. Deng, F. J. LI, H. Li, X. Li, and A. Alù, “Extreme Diffraction Control in Metagratings Leveraging Bound States in the Continuum and Exceptional Points,” Laser and Photonics Reviews, Special Issue for the 15th Anniversary, Vol. 16, No. 6, 2100617 (6 pages), June 2022 (published online on March 6, 2022). (web, arxiv) 680. A. Nagulu, X. Ni, A. Kord, M. Tymchenko, S. Garikapati, A. Alù, and H. Krishnaswamy, “Chip-Scale Floquet Topological Insulators for 5G Wireless Systems,” Nature Electronics, Vol. 5, pp. 300-309, May 24, 2022 (published online on May 2, 2022). (web, RedCube) [Press Release, IEEE Spectrum, Phys.org] 679. M. Markowitz, M. Cotrufo, Y. Zhou, K. Stensvad, C. Schardt, A. Overvig, and A. Alù, “Tailored Resonant Waveguide Gratings for Augmented Reality,” Optics Express, Vol. 30, No. 12, pp. 20469-20481, May 24, 2022. (web) 678. Y. G. Peng, Y. Mazor, and A. Alù, “Fundamentals of Acoustic Willis Media,” Wave Motion, Special Issue on Willis Materials, Vol. 112, 102930 (10 pages), May 24, 2022 (published online on May 6, 2022), (invited paper). (web, ShareLink) 677. C. L. Holloway, N. Prajapati, A. B. Artusio-Glimpse, S. Breweger, M. T. Simons, Y. Kasahara, A. Alù, and R. W. Ziolkowski, “Rydberg Atom- Based Field Sensing Enhancement Using a Split-Ring Resonator,” Applied Physics Letters, Vol. 120, 204001 (6 pages), May 20, 2022. (arxiv) [Press release] 676. S. Yin, E. Galiffi, and A. Alù, “Floquet Metamaterials,” E-Light, Vol. 2, No. 8 (13 pages), May 19, 2022, (invited paper). (web, RedCube) [Nanowerk, News and Views, Annual Award of E-Light] 675. R. Duggan, S. Mann, and A. Alù, “Limitations of Sensing at an Exceptional Point,” ACS Photonics, Vol. 9, No. 5, pp. 1554–1566, May 18, 2022 (published online on April 22, 2022). (web) 674. S. Yves, M. I. N. Rosa, Y. Guo, M. Gupta, M. Ruzzene, and A. Alù, “Moiré-Driven Topological Transitions and Extreme Anisotropy in Elastic Metasurfaces,” Advanced Science, Vol. 9, No. 13, 2200181 (8 pages), May 5, 2022 (published online on March 6, 2022). (web) [Wired] 673. H. Li, S. Yin, and A. Alù, “Nonreciprocity and Faraday Rotation at Time Interfaces,” Physical Review Letters, Vol. 128, No. 17, 173901 (7 pages), April 29, 2022. (web) 672. A. Alù, and J. Hu, “2021 Optical Materials Express Emerging Researcher Best Paper Prize: Editorial,” Optical Materials Express, Vol. 12, No. 5, p. 1946, April 19, 2022. 671. X. Shu, A. Li, G. Hu, J. Wang, A. Alù, and L. Chen, “Fast Encirclement of an Exceptional Point for Highly Efficient and Compact Chiral Mode Converters,” Nature Communications, Vol. 13, 2123 (6 pages), April 19, 2022. (web) 670. J. Fang, K. Yao, T. Zhang, M. Wang, T. Jiang, S. Huang, B. A. Korgel, M. Terrones, A. Alù, and Y. Zheng, “Room-Temperature Observation of Near-Intrinsic Exciton Linewidth in Monolayer WS 2 ,” Advanced Materials, Vol. 34, No. 15, 2108721 (6 pages), April 14, 2022 (published online on March 10, 2022). (web) 669. G. Xu, Y. Yang, X. Zhou, H. Chen, A. Alù, and C. W. Qiu, “Diffusive Topological Transport in Spatiotemporal Thermal Lattices,” Nature Physics, Vol. 18, pp. 450-456, April 1, 2022 (published online on February 3, 2022). (web, arxiv) 668. 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 Metasurface Reaching 80% Efficiency,” Nature Communications, Vol. 13, No. 1696 (11 pages), March 30, 2022. (web, arxiv) [Phys.org] 667. S. Yin, and A. Alù, “Efficient Phase Conjugation in a Space-Time Leaky Waveguide,” ACS Photonics, Vol. 9, No. 3, pp. 979-984, March 16, 2022 (published online on February 10, 2022). (web) 666. Y. Kawaguchi, A. Alù, and A. B. Khanikaev, “Non-Reciprocal Parity-Time Symmetry Breaking Based on Magneto-Optical and Gain/Loss Double Ring Resonators,” Optical Materials Express, Vol. 12, No. 4, pp. 1453-1460, March 16, 2022. (web) [Spotlight] 665. L. Huang, A. Krasnok, A. Alù, Y. Yu, D. Neshev, and A. E Miroshnichenko, “Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides,” Reviews on Progress in Physics, Vol. 85, No. 4, 046401 (75 pages), March 8, 2022 (published online on December 23, 2021). (web, arxiv) 664. R. Duggan, D. L. Sounas, and A. Alù, “Stability Bounds on Superluminal Propagation in Active Structures,” Nature Communications, Vol. 13, No. 1115 (10 pages), March 2, 2022. (web) 663. J. Soric, Y. Ra’di, D. Farfan, and A. Alù, “Radio-Transparent Dipole Antenna Based on a Metasurface Cloak,” Nature Communications, Vol. 13, No. 1114 (8 pages), March 2, 2022. (web, arxiv) 662. N. Nefedkin, M. Cotrufo, A. Krasnok, and A. Alù, “Dark-State Induced Quantum Nonreciprocity,” Advanced Quantum Technologies, Vol. 5, No. 3, 2100112 (17 pages), March 2022 (published online on January 28, 2022), (invited paper). (web) 661. N. C. Passler, X. Ni, G. Hu, J. R. Matson, G. Carini, M. Wolf, M. Schubert, A. Alù, J. D. Caldwell, T. G. Folland, and A. Paarmann, “Hyperbolic Shear Polaritons in Low-Symmetry Crystals,” Nature, Vol. 602, pp. 599-602, February 23, 2022. (web, RedCube) 660. H. Goh, and A. Alù, “Nonlocal Scatterer for Compact Wave-Based Analog Computing,” Physical Review Letters, Vol. 128, No. 7, 073201 (6 pages), February 18, 2022. (web) [Physics, Laser Physics World] 659. C. Qin, A. Alù, and Z. J. Wong, “Pseudo-Spin Orbit Coupling for Chiral Light Routings in Gauge-Flux-Biased Coupled Microring Resonators,” ACS Photonics, Vol. 9, No. 2, pp. 586-596, February 16, 2022 (published online on January 19, 2022). (web) 658. M. Khatoniar, R. Bushati, A. Mekawy, F. Dirnberger, A. Alù, and V. M. Menon, “Relaxing Symmetry Rules for Nonlinear Optical Interactions in Van der Waals Materials via Strong Light–Matter Coupling,” ACS Photonics, Vol. 9, No. 2, pp. 503-510, February 16, 2022 (published online on January 26, 2022). (web) 657. E. Galiffi, R. Tirole, S. Yin, H. Li, S. Vezzoli, P. A. Huidobro, M. G. Silveirinha, R. Sapienza, A. Alù, and J. B. Pendry, “Photonics of Time-Varying Media,” Advanced Photonics, Vol. 4, No. 1, 014002 (32 pages), February 14, 2022, (invited paper). (web, arxiv) [SPIE Newsroom] 656. F. Capolino, M. Khajavikhan, and A. Alù, “Metastructures: From Physics to Application,” Applied Physics Letters, Vol. 120, No. 6, 060401 (3 pages), February 7, 2022, (invited paper). (web) 655. Q. Xu, X. Su, X. Zhang, L. Dong, L. Liu, Y. Shi, Q. Wang, M. Kang, A. Alù, S. Zhang, J. Han, and W. Zhang, “Mechanically Reprogrammable Pancharatnam-Berry Metasurface for Microwaves,” Advanced Photonics, Vol. 4, No. 1, 016002 (11 pages), February 1, 2022. (web) [Cover, Physics World, SPIE Newsroom] 654. A. Krasnok, and A. Alù, “Low-Symmetry Nanophotonics,” ACS Photonics, Vol. 9, No. 1, pp. 2-24, January 19, 2022 (published online on January 6, 2022), (invited paper). (web, arxiv) 653. J. Li, Y. Li, P. C. Cao, M. Qi, X. Zheng, Y. G. Peng, B. Li, X. F. Zhu, A. Alù., H. Chen, and C. W. Qiu, “Reciprocity of Thermal Diffusion in Time- Modulated Systems,” Nature Communications, Vol. 13, No. 167 (8 pages), January 10, 2022. (web, arxiv) 652. Z. L. Deng, T. Shi, A. Krasnok, X. Li, and A. Alù, “Observation of Localized Magnetic Plasmon Skyrmions,” Nature Communications, Vol. 13, No. 8 (7 pages), January 10, 2022. (web, arxiv) 651. Y. Radi, and A. Alù, “Metagratings for Efficient Wavefront Manipulation,” IEEE Photonics Journal, Vol. 14, No. 1, No. 2207513 (13 pages), January 2022 (published online on December 17, 2021), (invited paper). (web) 2021 (76 papers) 650. A. Alù, “Message from the Incoming Editor-In-Chief,” Optical Materials Express, Vol. 12, No. 1, p. 374, December 24, 2021. (web) 649. A. Alù, “Space-Time Metasurfaces,” 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,” Journal of Optics, Vol. 24, No. 1, 013001 (53 pages), December 16, 2021 (published online on November 17, 2021), (invited paper). (web, arxiv) 648. A. Krasnok, N. Nefedkin, and A. Alù, “Parity-Time Symmetry and Exceptional Points,” IEEE Antennas and Propagation Magazine, Vol. 63, No. 3, pp. 110-121, December 6, 2021, (invited paper). (web, arxiv) 647. A. Kord, and A. Alù, “Magnetless Circulators Based on Synthetic Angular-Momentum Bias,” IEEE Antennas and Propagation Magazine, Vol. 63, No. 6, pp. 51-61, December 6, 2021 (published online on January 1, 2021), (invited paper). (web, arxiv) 646. Y. K. Chiang, L. Quan, Y. Peng, S. Sepehrirahnama, S. Oberst, A. Alù, and D. A. Powell, “Scalable Metagrating for Efficient Ultrasonic Focusing,” Physical Review Applied, Vol. 16, No. 6, 064014 (9 pages), December 6, 2021. (web, arxiv) 645. J. Zhang, B. Peng, S. Kim, F. Monifi, X. Jiang, Y. Li, P. Yu, L. Liu, Y. X. Liu, A. Alù, and L. Yang, “Optomechanical Dissipative Solitons,” Nature, Vol. 600, pp. 75-80, December 1, 2021. (web) [News & Views] 644. A. Hofstrand, M. Cotrufo, and A. Alù, “Nonreciprocal Pulse Shaping and Chaotic Modulation with Asymmetric Noninstantaneous Nonlinear Resonators,” Physical Review A, Vol. 104, No. 5, 053529 (8 pages), November 29, 2021. (web) 643. G. Hu, C. W. Qiu, W. Ma, R. Chen, X. Zhang, P. Li, D. Hu, Q. Dai, and A. Alù, “Polaritonics on Viking Sunstones,” Opics and Photonics News, Year in Optics, Special Issue Optics in 2021, Vol. 32, No. 12, p. 49, November 28, 2021. [Cover] (web) 642. M. Pascale, S. A. Mann, C. Forestiere, and A. Alù, “Bandwidth of Singular Plasmonic Resonators in Relation to the Chu Limit,” ACS Photonics, Vol. 8, No. 11, pp. 3249-3260, November 17, 2021 (published online on October 25, 2021). (web, arxiv) 641. Z. X. Chen, Y. G. Peng, H. X. Li, J. J. Liu, Y. J. Ding, B. Liang, X. F. Zhu, Y. Q. Lu, J. C. Cheng, and A. Alù, “Efficient Nonreciprocal Mode Transitions in Spatiotemporally Modulated Acoustic Metamaterials,” Science Advances, Vol. 7, No. 45, eabj1198 (8 pages), November 3, 2021. (web, arxiv) 640. S. Ramezanpour, A. Bogdanov, A. Alù, and Y. Radi, “Generalization of Exceptional Point Conditions in Perturbed Coupled Resonators,” Physical Review B, Vol. 104, No. 20, 205405 (8 pages), November 3, 2021. (web) 639. 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 Mark Stockman, Vol. 10, No. 14, pp. 3723-3733, October 28, 2021 (published online on July 26, 2021), (invited paper). (web) 638. C. Valagiannopoulos, A. Sarsen, and A. Alù, “Angular Memory of Photonic Metasurfaces,” IEEE Transactions on Antennas and Propagation, Vol. 69, No. 11, pp. 7720-7728, October 28, 2021 (published online on June 2, 2021). (web) 637. A. Alù, C. Daraio, P. Deymier, and M. Ruzzene, “Topological Acoustics,” Acoustics Today, Vol. 17, No. 3, pp. 13-21, October 26, 2021, (invited paper). (web) 636. S. Guddala, F. Komissarenko, S. Kiriushechkina, A. Vakulenko, M. Li, V. M. Menon, A. Alù, and A. B. Khanikaev, “Topological Phonon-Polariton Funneling in Midinfrared Metasurfaces,” Science, Vol 374, No. 6564, pp. 225-227, October 8, 2021. (web) 635. H. Li, S. Yin, E. Galiffi, and A. Alù, “Temporal Parity-Time Symmetry for Extreme Energy Transformations,” Physical Review Letters, Vol. 127, 153903 (7 pages), October 7, 2021. (web, arxiv) 634. 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, Vol. 150, pp. 2040-2045, September 21, 2021, (invited paper). (web) 633. S. A. Mann, and A. Alù, “Broadband Topological Slow Light through Brillouin-Zone Winding,” Physical Review Letters, Vol. 127, No. 12, 123601 (6 pages), September 13, 2021. (web) 632. Q. Zhang, G. Hu, W. Ma, P. Li, A. Krasnok, R. Hillebrand, A. Alù, and C. W. Qiu, “Interface Nano-Optics with Van der Waals Polaritons,” Nature, Vol. 597, pp. 187-195, September 8, 2021. (web, SharedIt) 631. 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) 630. 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) 629. 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) 628. 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] 627. 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) 626. 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) 625. 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) 624. 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) 623. 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) 622. 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) 621. 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) 620. 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) 619. 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) 618. 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) 617. 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) 616. 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) 615. 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) 614. 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] 613. 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) 612. 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) 611. 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) 610. 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) 609. 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) 608. 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) 607. 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] 606. 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) 605. 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] 604. 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) 603. 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) 602. 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) 601. 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) 600. 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) 599. 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) 598. 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) 597. 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] 596. 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) 595. 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) 594. 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) 593. 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) 592. 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) 591. 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] 590. 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] 589. 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] 588. 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) 587. 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) 586. 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) 585. 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) 584. 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] 583. C. Rasmussen, and A. Alù, “Compressibility-Near-Zero Acoustic Radiation,” Physical Review Applied, Vol. 15, No. 2, 024022 (8 pages), February 10, 2021. (web) 582. 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) 581. 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) 580. 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) 579. 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) 578. 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] 577. S. Sun, Y. Ding, H. Li, P. Hu, C. W. Cheng, Y. Sang, F. Cao, Y. Hu, A. Alù, D. Liu, Z. Wang, S. Gwo, D. Han, and J. Shi, “Tunable Plasmonic Bound States in the Continuum in the Visible Range,” Physical Review B, Vol. 103, No. 5, 045416 (9 pages), January 15, 2021. (web) 576. 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) 575. 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 (65 papers) 574. 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) 573. 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) 572. 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) 571. 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) 570. 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) 569. 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) 568. 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) 567. 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) 566. A. Alù, “Metamaterials for Next-Generation Communication Systems,” IEEE ComSoc Technology News, October 19, 2020. (web) 565. 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) 564. 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) 563. 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) 562. 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) 561. A. Alù, C. Daraio, P. Deymier, S. Chavarria, and M. Ruzzene, “New Frontiers of Sound: A Quiet Revolution,” Scientia, Vol. 132, pp. 144-147, September 24, 2020 (published online on June 3, 2020). (web, podcast) 560. 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) 559. 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) 558. 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] 557. 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] 556. A. Monti, A. Alù, A. Toscano, and F. Bilotti, “Optical Metasurfaces Based on Spheroidal Nanoparticles: Theory and Applications,” Radio Science Bulletin, Vol. 2020, No. 374, pp. 28-38, September 2020. 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]