Publications

A. Krasnok, and A. Alù, “Low-Symmetry Nanophotonics,” ACS Photonics, Vol. 9, No. 1, pp. 2-24, (2022).

Z. Deng, T. Shi, A. Krasnok, X. Li,  and A. Alù. Observation of Localized Magnetic Plasmon Skyrmions. Nat Commun 13, 8 (2022). https://doi.org/10.1038/s41467-021-27710-w

J. Li, Y. Li, P. Cao, X. Zheng, Y. Peng, B. Li, X. Zhu, A. Alù, C. Qiu. Reciprocity of thermal diffusion in time-modulated systems. Nature Communications, Vol. 13, No. 167 , (2022)

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, (2022) 

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 (2022) 

H. Goh, and A. Alù, Nonlocal Scatterer for Compact Wave-Based Analog Computing, Physical Review Letters, 128, 7, 073201 (2022)

Duggan, R., Moussa, H., Ra’di, Y. Sounas L, D.,  and Alù, A. Stability Bounds on Superluminal Propagation in Active Structures. Nat Commun 13, 1115 (2022).

Soric, J., Ra’di, Y., Farfan, D., and  Alù, A. Radio-Transparent Dipole Antenna Based on a Metasurface Cloak. Nat Commun 13, 1114 (2022).

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)

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. Nat Commun 13, 2123 (2022).

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 (2022).

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 (2022). 

E. Galiffi, S. Yin, and A. Alù, Tapered Photonic Switching Nanophotonics, Vol. 11, No. 16, pp. 3575-3581, (2022).

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, (2022). 

A. Farhi, A. Mekawy, A. Alù, and D. Stone, Excitation of Absorbing Exceptional Points in the Time Domain, Physical Review A, Vol. 106, L031503, (2022).

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, (2022).  

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, (2022).

A. Alù, New OMEx Deputy Editor, Optical Materials Express, Vol. 12, No. 10, p. 4182, (2022).

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, (2022).

M. Weiner, X. Ni, A. Alù, and A. B. Khanikaev, Synthetic Pseudo-Spin-Hall Effect in Acoustic Metamaterials, Nature Communications, Vol. 13, No. 6332, (2022).

A. Alù, Tricking Light, Scientific American, Vol. 327, No. 5, pp. 42-51, (2022).

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,  (2022).

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), (2022).

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), (2022).

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), (2022).

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, (2022). 

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, (2022).

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), (2022). 

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 (2021). 

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 (2021). 

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, (2021) 

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 (2021). 

N. Jankovic, and A. Alù, “Glide-Symmetric Acoustic Waveguides for Extreme Sensing and Isolation,” Physical Review Applied, Vol. 15, No. 2, 024004 (2021). 

C. Rasmussen, and A. Alù, “Compressibility-Near-Zero Acoustic Radiation,” Physical Review Applied, Vol. 15, No. 2, 024022 (2021). 

A. Overvig, N. Yu, and A. Alù, “Chiral Quasi-Bound States in the Continuum,” Physical Review Letters, Vol. 126, No. 7, 073001 (2021). 

H. Esfahlani, Y. Mazor, and A. Alù, “Homogenization and Design of Acoustic Willis Metasurfaces,” Physical Review B, Vol. 103, 054306 (2021).  

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 (2021), (invited paper). 

A. Overvig, and A. Alù, “Wavefront-Selective Fano Resonant Metasurfaces,” Advanced Photonics, Vol. 3, No. 2, 026002 (2021), (invited paper).  

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 (2021). 

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 (2021). [Editors’Suggestion] 

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, (2021). 

A. Cordaro, H. Kwon, D. Sounas, A. F. Koenderink, A. Polman, and A. Alù, “Mathematics at the Speed of Light,” FERMAT, Vol. 44, 2 (2021). 

R. Duggan, J. del Pino, E. Verhagen, D. Sounas, and A. Alù, “Nonlinearity-Driven Broken Degeneracy and Nonreciprocity,” FERMAT, Vol. 44, 4 (2021). 

G. Hu, C. W. Qiu, and A. Alù, “Twistronics for Photons: Opinion,” Optical Materials Express, Vol. 11, No. 5, pp. 1377-1382, (2021), (invited paper). [Editor’s Pick] 

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, (2021), (invited paper). 

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, (2021). 

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 (2021), (invited paper). 

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 (2021) (invited paper). 

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 (2021). 

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 (2021). 

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 (2021) (invited paper). [Featured Article] 

A. Mekawy, H. Li, Y. Ra’di, and A. Alù, “Parametric Enhancement of Radiation from Electrically Small Antennas,” Physical Review Applied, Vol. 15, 054063 (2021). 

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 (2021) (invited paper). 

N. Nefedkin, A. Alù, and A. Krasnok, “Quantum Embedded Superstates,” Advanced Quantum Technologies, Vol. 4, No. 6, 2000121 (2021). 

C. Rasmussen, L. Quan, and A. Alù, “Acoustic Nonreciprocity,” Journal of Applied Physics, Special Issue on Acoustics 2021, Vol. 129, 210903 (2021) (invited paper). [Editor’s Pick]  

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 ( 2021), (invited paper). 

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, (2021) 

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 (2021), (invited paper) 

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 (2021). 

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 (2021). 

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 (2021). 

H. Li, A. Mekawy, and A. Alù, “Gain-Free Parity-Time Symmetry for Evanescent Fields,” Physical Review Letters, Vol. 127, 014301 (2021). 

Y. Mazor, M. Cotrufo, and A. Alù, “Unitary Excitation Transfer Between Coupled Cavities Using Temporal Switching,” Physical Review Letters, Vol. 127, 013902 (2021). 

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 (2021). 

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 (2021). 

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 (2021). 

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,  (2021), (invited paper). 

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 (2021). 

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, (2021). 

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 (2021). 

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 (2021).

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 (2021). 

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, (2021). 

S. A. Mann, and A. Alù, “Broadband Topological Slow Light through Brillouin-Zone Winding,” Physical Review Letters, Vol. 127, No. 12, 123601 (2021).

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, (2021) (invited paper). 

H. Li, S. Yin, E. Galiffi, and A. Alù, “Temporal Parity-Time Symmetry for Extreme Energy Transformations,” Physical Review Letters, Vol. 127, 153903 (2021). 

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, (2021). 

M. Pascale, S.A. Mann, C. Forestiere, A. Alù. Bandwidth of Singular Plasmonic Resonators in Relation to the Chu Limit. ACS Photonics, (2021)

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 (2021) 

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 (2021) 

A. Hofstrand, M. Cotrufo, A. Alù. Nonreciprocal Pulse Shaping and Chaotic Modulation with Asymmetric Noninstantaneous Nonlinear Resonators. Physical Review A, Vol. 104, No. 5, 053529 (2021)

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, (2021).  

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 (2021) 

Y. Radi, and A. Alù, “Metagratings for Efficient Wavefront Manipulation,” IEEE Photonics Journal, Vol. 14, No. 1, No. 2207513  (2021), (invited paper) 

K. Chen, G. Ding, G. Hu, Z. Jin, J. Zhao, Y. Feng, T. Jiang, A. Alù, C. Qiu. Directional janus metasurface. Advanced Materials, Vol. 32, No. 2, 1906352 (2020).

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  (2020).

D. Ramaccia, D.L. Sounas, A. Alù, A. Toscano, F. Bilotti. Phase-induced frequency conversion and doppler effect with time-modulated metasurfaces. IEEE Transactions on Antennas and Propagation, 68, 3, 1607-1617, (2020)

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, 1799-1811, (2020).

A. Casolaro, A. Toscano, A. Alù, F. Bilotti. Dynamic beam steering with reconfigurable metagratings. IEEE Transactions on Antennas and Propagation, 68, 3, 1542-1552 (2020) (invited paper).

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, 1523-1532, (2020). 

M. Moccia, G. Castaldi, A. Alù, V. Galdi. Harnessing spectral singularities in non-Hermitian cylindrical structures. IEEE Transactions on Antennas and Propagation, 68, 3, 1704-1716 (2019).

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,  1223-1231,  (2020) (invited paper).

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, (2020).  

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 (2020), (invited paper)

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  (2020). 

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, (2020).  

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 (2020). 

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 (2020). 

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 Applied Energy Materials, Vol. 3, No. 4, pp. 3150-3156, (2020).  

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 (2020).

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 (2020). 

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 (2020).

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 (2020).

G. Hu, A. Krasnok, Y. Mazor, C. W. Qiu, and A. Alù,  Moiré hyperbolic metasurfaces. Nano letters, Vol. 20, No. 5, pp. 3217-3224, (2020).

Y. Ra’di, and A. Alù., “Nonreciprocal Wavefront Manipulation in Synthetically Moving Metagratings,” Photonics, Special Issue for Metamaterials 2019, Vol. 7, No. 2, 28 (2020) (invited paper).  

A. Alù, J. Chennupati, and H. V. Demir “Active Nanophotonics,” Proceedings of IEEE, Vol. 108, No. 5, pp. 625-627, (2020), (invited paper).  

A. Alù, J. Chennupati, and H. V. Demir “Active Nanophotonics[Scanning Issues],” Proceedings of IEEE, Vol. 108, No. 5, pp. 625-627, 2020, (invited paper).  

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 (2020). 

Y. Radi, A. Krasnok and A. Alù, “Virtual Critical Coupling,” ACS Photonics, Vol. 7, No. 6, pp. 1468-1475, (2020). 

H. Li, A. Mekawy, A. Krasnok, and A. Alù, “Virtual Parity-Time Symmetry,” Physical Review Letters, Vol. 124, No. 19, 193901 (2020). 

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, (2020), (invited paper). 

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, (2020). [Selected as Top 10 Breakthrough of the Year by Physics World]  

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 (2020).

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 (2020). 

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 (2020).  

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 (2020).  

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 (2020).  

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 (2020). 

Y. Mazor, and A. Alù, “Routing Optical Spin and Pseudospin with Metasurfaces,” Physical Review Applied, Vol. 14, No. 1, 014029 (2020). 

A. Kord, D. Sounas, and A. Alù, “Magnet-Free Microwave Nonreciprocity,” Proceedings of IEEE, Vol. 108, No. 10, pp. 1728-1758, (2020), (invited paper). 

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 (2020). 

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(2020). 

T. E. Rimpiläinen, A. Alù, and A. H. Sihvola, “Implementing Radial Anisotropy with Self-Similar Structures,” Physical Review B, Vol. 102, No. 8, 085141 (2020). 

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 (2020).  

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, ( 2020), (invited paper).

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, (2020). 

H. Li, H. Moussa, D. Sounas, and A. Alù, “Parity-Time Symmetry Based on Time Modulation,” Physical Review Applied, Vol. 14, No. 3, 031002 (2020). 

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,  (2020) (invited paper). 

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 (2020). 

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, (2020). 

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 (2020) 

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 (2020). 

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), (2020). 

A. Alù, “Magnet-Free Nonreciprocity,” Proceedings of IEEE, Vol. 108, No. 10, pp. 1682-1683, (2020), (invited paper) 

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 (2020). 

A. Alù, “Metamaterials for Next-Generation Communication Systems,” IEEE ComSoc Technology News, (2020). 

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, (2020). 

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 (2020). 

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 (2020). 

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 (2020) 

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, (2020). 

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 (2020).  

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 (2020) 

F. Zangeneh-Nejad, A. Alù, and R. Fleury, “Topological Wave Insulators: A Review,” Comptes Rendus Physique, Vol. 21, No. 4-5, pp. 467-499, (2020) (invited paper). 

H. Li, and A. Alù, “Temporal Switching to Extend the Bandwidth of Thin Absorbers,” Optica, Vol. 8, No. 1, pp. 24-29 (2020). 

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 (2020). 

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, (2020), (invited paper). 

A. Pun, A. Asadpoordarvish, E. Kumarasamy, M. Tayebjee, D. McCamey, S. Sanders, L. Campos, and M. Sfeir, Ultrafast Intramolecular Singlet Fission to Persistent Multiexcitons by Molecular Design, Nature Chemistry, 2019, 11, 821–828.

G. D’Aguanno, D.L. Sounas, H.M. Saied, A. Alù. Nonlinearity-Based Circulator. Applied Physics Letters, 114, 18, 181102, (2019)

L. Quan, A. Alù. Passive Acoustic Metasurface With Unitary Reflection Based on Nonlocality. Physical Review Applied, 11, 5, 054077, (2019)

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,  2, 55 (7), (2019).

A. Kord, M. Tymchenko, D.L. Sounas, H. Krishnaswamy, A. Alù. CMOS Integrated Magnetless Circulators Based on Spatiotemporal Modulation Angular-Momentum Biasing. IEEE Transactions on Microwave Theory and Techniques, 67, 7, 2649-2662 (2019)

A. Alù. Active and Reconfigurable Metasurfaces. Roadmap on Metasurfaces, Journal of Optics, 21, 073002. (2019).

R. Duggan, J.D. Pino, E. Verhagen, A. Alù. Optomechanically Induced Birefringence and Optomechanically Induced Faraday Effect. Physical review letters, 123, 2, 023602. (2019)

S. Lepeshov, A. Krasnok, A. Alù. Nonradiative to Superscattering Switch with Phase-Change Materials. arXiv preprint arXiv:1904.11442, (2019)

M. Miri, M. Cotrufo, A. Alù. Anomalous Optical Forces in PT-Symmetric Waveguides. Optics letters, 44, 14, 3558-3561, (2019)

A. Melnikov, Y.K. Chiang, L. Quan, S. Oberst, A. Alù, S. Marburg, D. Powell. Acoustic Meta-atom With Experimentally Verified Maximum Willis Coupling. Nature communications, 10, 1, 1-7. (2019)

N.A. Mortensen, S.I. Bozhevolnyi, A. Alu. Topological Nanophotonics. Nanophotonics, 8, 8, 1315-1317, (2019)

S.A. Mann, D.L. Sounas, A. Alù. Broadband Delay Lines and Nonreciprocal Resonances in Unidirectional Waveguides. Physical Review B, 100, 2, 020303, (2019).

C. Cassella, G. Michetti, M. Pirro, Y. Yu, A. Kord, D.L. Sounas, A. Alú, 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, (2019).

C.P. Wiederhold, D.L. Sounas, A. Alù. Nonreciprocal Acoustic Propagation and Leaky-Wave Radiation in a Waveguide with Flow. The Journal of the Acoustical Society of America, 146, 1, 802-809, (2019).

M. Tymchenko, D. Sounas, A. Nagulu, H. Krishnaswamy, A. Alù. Quasielectrostatic Wave Propagation Beyond the Delay-Bandwidth Limit in Switched Networks. Physical Review X,  Vol. 9, No. 3, 031015 ( (2019)

A. Kord, H. Krishnaswamy, A. Alù. Magnetless Circulators with Harmonic Rejection Based on N-Way Cyclic-Symmetric Time-Varying Networks. Physical Review Applied, 12, 2, 024046. (2019).

R. Duggan, D. Sounas, A. Alu. Optically Driven Effective Faraday Effect in Instantaneous Nonlinear Media. Optica, 6, 9, 1152-1157. (2019)

M. Barbuto, A. Bassotti, A. Alu, F. Bilotti, A. Toscano. On the Topological Robustness of Vortex Modes at Microwave Frequencies. Radio engineering, 28, 3, 499-504. (2019)

X. Zhou, X. Lin, Z. Xiao, T. Low, A. Alù, B. Zhang, H. Sun. Controlling Photonic Spin Hall Effect via Exceptional Points. Physical Review B,Vol. 100, No. 11, 115429 (6 pages) (2019).

R. Duggan, Y. Ra’di, A. Alu. Temporally and Spatially Coherent Emission from Thermal Embedded Eigenstates. ACS Photonics, 6, 11, 2949-2956, (2019)

F. Monticone, D. Sounas, A. Krasnok, A. Alu. Can a Non-radiating Mode be Externally Excited? Nonscattering states Versus Embedded Eigenstates. ACS Photonics, 6, 12, 3108-3114, (2019)

H. Li, A. Mekawy, A. Alù. Beyond Chu’s limit with Floquet Impedance Matching. Physical review letters,Vol. 123, No. 16, 164102, (2019).

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, (2019) 

A. Kord, M. Tymchenko, D. L. Sounas, H. Krishnaswamy, and A. Alù. CMOS Integrated Magnetless Circulators Based on Cyclic-Symmetric Angular-Momentum Biasing. IEEE Transactions on Microwave Theory and Techniques, 2019, 67, 7, 2649-2662. (arxiv)

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, 2019, in press. (arxiv)

M. Weiner, X. Ni, M. Li, A. Alù, and A. Khanikaev. Demonstration of a Third Order Hierarchy of Higher-Order Topological States in a Three-Dimensional Acoustic Metamaterial. under review, since January 2019. (arxiv)

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, 2019, 11, 4, 044089. (arxiv)

A. Melnikov, L. Quan, S. Oberst, A. Alù, S. Marburg, and D. Powell. Acoustic Meta-Atom with Maximum Willis Coupling. Nature Communications, 2019, 10, 3148. (arxiv)

M. Wang, Z. Wu, A. Krasnok, T. Zhang, M. Liu, H. Liu, L. Scarabelli, 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, 2019, 15, 31, 1900982. (arxiv)

Y. Mazor, and A. Alù. Angular-Momentum Selectivity and Asymmetry in Highly Confined Wave Propagation Along Sheath-Helical Metasurface Tubes. Physical Review B, 2019, 99, No. 15, 155425 (arxiv)

L. Quan, D. L. Sounas, and A. Alù. Non-Reciprocal Willis Coupling in Zero-Index Moving Media. Physical Review Letters, 2019, 123, 6, 064301. (arxiv)

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, 2019, Vol. 100, No. 4, 045423 (arxiv)

D. G. Baranov, Y. Xiao, I. A. Nechepurenko, A. Krasnok, A. Alù, and M. Kats. Nanophotonic Engineering of Far-Field Thermal Emitters. Nature Materials, 2019, 18, 920-930. (arxiv)

M. Cotrufo, and A. Alù. Excitation of Single-Photon Embedded Eigenstates in Coupled Cavity-Atom Systems. Optica, 2019, 6, 6, 799-804 (arxiv, press release)

A. Monti, A. Alù, A. Toscano, and F. Bilotti. 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, 2019, 6, 1, 26. (invited paper)

T. Mukhopadhyay, S. Adhikari, and A. Alù. Theoretical Limits for Negative Elastic Moduli in Sub-Acoustic Lattice Materials. Physical Review B, 2019, 99, 9, 094108.

M. Cotrufo, L. Sun, J. Choi, A. Alù, and X. Li. Enhancing Functionalities of Atomically Thin Semiconductors with Plasmonic Nanostructures. Nanophotonics, 2019, 8, 4, 577-598. (invited paper)

H. Esfahlani, M. S. Byrne, M. McDermott, and A. Alù. Acoustic Supercoupling in a Zero-Compressibility Waveguide. Research, 2019, 2019, 2457870, (invited paper). (arxiv)

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, 2019, 25, 10-20.

S. Peng, N. J. Schilder, X. Ni, J. van de Groep, M. L. Brongersma, A. Alù, A. Khanikaev, H. A. Atwater, and A. Polman. Probing the Band Structure of Topological Silicon Photonic Lattices in the Visible Spectrum. Physical Review Letters, 2019, 122, No. 11, 117401.

L. Li, H. Ruan, C. Liu, Y. Li, Y. Shuang, P. K. Liu, C. W. Qiu, A. Alù, and T. J. Cui. Machine-Learning Reprogrammable Metasurface Imager. Nature Communications, 2019, 10, 1082. (RedCube)

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, 2019, 30, 25, 254004. (invited paper). (arxiv)

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, 2019, 27, No. 7, pp. 9481-9494.

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 Nonlinear Harmonic Manipulation and New Wireless Communication Systems. National Science Review, 2019, 6, 2, 231-238. (press release)

A. Pun, S. Sanders, M. Sfeir, L. Campos and D. Congreve. Annihilator dimers enhance triplet fusion upconversion. Chem. Sci., 2019, 10, 3969-3975.

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, 2019, 9, 1, 011040. (arxiv)

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 Asymmetric Groove Array. Nature Photonics, 2019, 13, 3, 180-184. (RedCube, arxiv)

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, 2019, 19, 2, 1009-1014.

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, 2019, 9, 1-7.(invited paper)

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, 2019, 114, 3, 031103. (arxiv)

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, 2019, 7, 2, 1801236.

S. A. Mann, D. L. Sounas, A. Alù. Nonreciprocal Cavities and the Time-Bandwidth Limit. Optica, 2019, 6, 1, 104-110. (arxiv)

Y. Mazor, and A. Alù. Non-Reciprocal Hyperbolic Propagation over Moving Metasurfaces. Physical Review B, 2019, 99, 4, 045407. (arxiv)

M. A. Miri, and A. Alù. Exceptional Points in Optics and Photonics. Science, 2019, 363, 6422, 42.

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. Hyperbolic Phonon Polaritons in Suspended Hexagonal Boron Nitride. Nano Letters, 2019, 19, 2, 1009-1014.

C. A. Valagiannopoulos, E. Marengo, A. Dimakis, and A. Alù. Aharonov-Bohm Tomographic Imaging. IET Antennas and Propagation, 2018, 12, 12, 1890-1894.

Y. Yu, G. Michetti, A. Kord, M. Pirro, D.L. Sounas, Z. Xiao, C. Cassella, A. Alù, M. Rinaldi. Highly-Linear Magnet-Free Microelectromechanical Circulators. Journal of Microelectromechanical Systems, 28, 6, 933-940, (2019)

A. Cordaro, H. Kwon, D. Sounas, A.F. Koenderink, A. Alù, A. Polman. High-index Dielectric Metasurfaces Performing Mathematical Operations. Nano letters, Vol. 19, No. 12, pp. 8418-8423, (2019)

N. Cselyuszka, A. Alù, N. Janković. Spoof-fluid-spoof  Acoustic  Waveguide and its Applications for Sound Manipulation. Physical Review Applied, Vol. 12, No. 5, 054014, (2019).

Z. Xiao, H. Li, T. Kottos, A. Alù. Enhanced Sensing and Nondegraded Thermal Noise Performance Based on -Symmetric Electronic Circuits with a Sixth-Order Exceptional Point. Physical review letters, Vol. 123, No. 21, 213901 , (2019).

Z. Xiao, Y. Ra’di, S. Tretyakov, A. Alù. Microwave tunneling and robust information transfer based on parity-time-symmetric absorber-emitter pairs. Research, Vol. 2019, No. 7108494, (2019).

Y. Yu, G. Michetti, M. Pirro, A. Kord, D.L. Sounas, Z. Xiao, C. Cassella, A. Alù, M. Rinaldi. Radio Frequency Magnet-free Circulators Based on Spatiotemporal Modulation of Surface Acoustic Wave Filters. IEEE Transactions on Microwave Theory and Techniques, 67, 12, 4773-4782 (2019).

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, (2019).

A. Krasnok, D. Baranov, H. Li, M. Miri, F. Monticone, A. Alú. Anomalies in Light Scattering. Advances in Optics and Photonics, 11, 4, 892-951, (2019)

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, (2020).  

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, 89-94, (2019).  

L. Quan, A. Alù. Hyperbolic sound propagation over nonlocal acoustic metasurfaces. Physical review letters, 123, 24, 244303 (2019).

D.V. Yakimchuk, E.Y. Kaniukov, S. Lepeshov, V.D. Bundyukova, S.E. Demyanov, G.M. Arzumanyanm, N.V. Doroshkevich, K.Z. Mamatkulov, A. Bochmann, M. Presselt, O. Stranik, S.A. Khubezhov, A.E. Krasnok, A. Alù, V.A. Sivakov. Self-organized spatially separated silver 3D dendrites as efficient plasmonic nanostructures for surface-enhanced Raman spectroscopy applications. Journal of Applied Physics, 126, 23, 233105 (2019)

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, (2019).

D. V. Yakimchuk, E. Y. Kaniukov, S. I. Lepeshov, V. D. Bundyukova, S. E. Demyanov, G. M. Arzumanyan, N. V. Doroshkevich, K. Z. Mamatkulov, A. Alù, A. Bochmann, M. Presselt, O. Stranik, A. Krasnok, and V. Sivakov. Spatially Separated Self-Assembled Silver Dendrites for Highly Sensitive SERS Applications. under review, since November 2018. (arxiv)

Z. Li, Q. Dai, M. Mehmood, G. Hu, B. Lukyanchuk, J. Tao, C. Hao, I. Kim, H. Jeong, G. Zheng, S. Yu, A. Alù, J. Rho, C. W. Qiu. Full-Space Cloud of Random Points with a Scrambling Metasurface. Light: Science & Applications, 2018, 7, No. 63.

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, 2018, 66, 11, 4706-4725. (arxiv)

A. Kord, D. L. Sounas, Z. Xiao, and A. Alù. Broadband Cyclic-Symmetric Magnet-less Circulators and Theoretical Bounds on their Bandwidth. IEEE Transactions on Microwave Theory and Techniques, Special Issue for the 2018 International Microwave Symposium, 2018, 66, 12, 5472-5481. (arxiv)

Y. Radi, C. A. Valagiannopoulos, A. Alù, C. R. Simovski, and S. A. Tretyakov. On-Site Wireless Power Generation. IEEE Transactions on Antennas and Propagation, 2018, 66, 8, 4260-4268. (arxiv)

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, 2018, 6, 15, 1800345. (arxiv)

A. Krasnok, and A. Alù. Valley-Selective Response of Nanoantennas Coupled to 2D Transition-Metal Dichalcogenides. Applied Sciences, Special Issue on Nano-Antennas, 2018, 8, 7, 1157 (invited paper). (arxiv)

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, 2018, 66, 7, 3512-3525.

F. Monticone, and A. Alù. Enhanced Focusing and Imaging Based on Parity-Time Symmetry and Nonlocality. FERMAT, 2018, 23, 2.

L. Quan, Y. Radi, D. L. Sounas, and A. Alù. Maximum Willis Coupling in Acoustic Scatterers. Physical Review Letters, 2018, 120, 25, 254301. (arxiv)

A. Alù, and H. Krishnaswamy. Artificial Nonreciprocal Photonic Materials at GHz-to-THz Frequencies. MRS Bulletin, Special Issue on Materials for Nonreciprocal Photonics, 2018, 43, 6, 436-442 (invited paper).

A. Krasnok, S. Lepeshov, and A. Alù. Nanophotonics with 2D Transition Metal Dichalcogenides. Optics Express, Special Issue for the 20th Anniversary of Optics Express, 2018, 26, 12, 15972-15994 (invited paper). (arxiv)

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, 2018, 12, pp. 397-401.

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, 2018, 66, 6, 2731-2745. (arxiv)

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 WS2 at Room Temperature. Advanced Materials, 2018, 30, 22, 1705779.

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, 2018, 172, 39-50

A. Krasnok, and A. Alù. Embedded Scattering Eigenstates Using Resonant Metasurfaces. Journal of Optics, Special Issue on New Materials for Nanophotonics, 2018, 20, 6, 064002 (invited paper). (arxiv)

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, 2018, 5, 297-304,. (ReadIt, press release)

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, 2018, 4, 5, 8802. (arxiv)

F. Ruesink, J. P. Mathew, M. A. Miri, A. Alù, and E. Verhagen. Optical Circulation in a Multimode Optomechanical Resonator. Nature Communications, 2018, 9, 1798. (arxiv)

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, 2018, 18, 6, 3362-3367.

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. Scientific Reports, 2018, 8, 6624. (arxiv)

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, 2018, 12, 5, 1700220. (arxiv)

A. Monti, A. Alù, A. Toscano, and F. Bilotti. Metasurface-Based Anti-Reflection Coatings at Optical Frequencies. Journal of Optics, 2018, 20, 5, 055001.

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 WS2 Structures. ACS Applied Materials and Interfaces, 2018, 10, 19, 16690-16697.

M. A. Miri, G. D’Aguanno, and A. Alù. Optomechanical Frequency Combs. New Journal of Physics, 2018, 20, 043013.

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, 2018, 43, 8, 1838-1841.

A. Krasnok, D. G. Baranov, A. Generalov, S. Li, and A. Alù. Coherently Enhanced Wireless Power Transfer. Physical Review Letters, 2018, 120, 14, 143901. (arxiv)

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, 2018, 120, 13, 133901.

D. Sounas, and A. Alù. Fundamental Bounds on the Operation of Nonlinear Fano Isolators. Physical Review B, 2018, 97, 11, 115431.

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, 2018, 30, 16, 1706358.

Y. Radi, and A. Alù. Reconfigurable Metagratings. ACS Photonics, Special Issue on Ultra-Capacity Metasurfaces with Low Dimension and High Efficiency, 2018, 5, 5, 1779-1785. (invited paper)

Y. Hadad, A. Khanikaev, and A. Alù. Self-Induced Topological Protection in Nonlinear Circuit Arrays. Nature Electronics, 2018, 1, 178-182.

H. Kwon, H. Chalabi, and A. Alù. Broadband Absorption with Gradient Metasurfaces. EPJ Applied Metamaterials, Special Issue for Metamaterials 2017, 2018, 5, 4. (invited paper)

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, 2018, 9, 9090. (SharedIt, arxiv)

A. Krasnok, M. Tymchenko, and A. Alù. Nonlinear Metasurfaces: A Paradigm Shift in Nonlinear Optics. Materials Today, 2018, 21, 1, 8-21. (invited paper) (arxiv)

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, 2018, 20, 3, 034007. (invited paper) (arxiv)

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, 2018, 97, 8, 085414. (arxiv)

D.L. Sounas, J. Soric, and A. Alù. Broadband Passive Isolators Based on Coupled Nonlinear Resonances. Nature Electronics, 2018, 1, 113-119. (ShareIt)

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, 2018, 66, 2, 911-926. (arxiv)

T. Koutserimpas, A. Alù, and R. Fleury. Parametric Amplification and Bidirectional Invisibility in PT-Symmetric Time-Floquet Systems. Physical Review A, 2018, 97, 1, 013839. (arxiv)

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, 2018, 6, 3, 1701094. (invited paper) (arxiv)

A. 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, 2018, 9, No. 1, 014015.