Andrea Alù, Ph.D.

  • Director, Photonics Initiative
  • Einstein Professor of Physics, The Graduate Center, CUNY
  • Professor of Electrical Engineering, The City College of New York

Andrea Alù is best known for his breakthroughs in invisibility cloaking, or making objects transparent to incoming microwave signals. He realized the first freestanding three-dimensional invisibility cloak. He also developed the first nonreciprocal acoustic circulator—or one-way sound device.

Alù’s discoveries in metamaterials and plasmonics have broad implications for a range of sectors, including defense, communications, medical imaging, acoustics, mechanics, and robotics.

He joined CUNY and the Advanced Science Research Center from the University of Texas at Austin where he was the Temple Foundation Endowed Professor #3 in the Cockrell School of Engineering. He was also a member of the Cockrell School’s Wireless Networking and Communications Group and the head of the Metamaterials and Plasmonic Research Laboratory.

Alù is a recent recipient of the Alan T. Waterman Award (2015) from the National Science Foundation, one of the top prizes for scientists and engineers in the United States. He has three times been named a finalist for the Blavatnik National Awards for Young Scientists (2016, 2017, and 2018), the world’s largest unrestricted prizes for early career scientists.

He is a fellow of the Optical Society of America (OSA), the Institute of Electrical and Electronics Engineers (IEEE), the American Physical Society (APS), and the International Society for Optics and Photonics (SPIE). He is also a Simons Foundation Investigator in Physics and a distinguished lecturer for the IEEE Antennas and Propagation Society and the OSA.

Alù holds more than a dozen patents and patent applications and has co-authored more than 500 frequently cited contributions to scientific literature. He serves on the editorial boards of several international journals, including Physical Review B, New Journal of Physics, and Advanced Optical Materials. He has a Ph.D., M.S., and an undergraduate degree from the University of Roma Tre in Rome, and he conducted his postdoctoral research at the University of Pennsylvania.


Principal Investigator
AFOSR MURI: Magnet-Free Non-Reciprocal Metamaterials Based on Spatio-Temporal Modulation

Collaboration Director
Simons Collaboration: Harnessing Universal Symmetry Concepts for Extreme Wave Phenomena


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

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.

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

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

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

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)

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)

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.

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. (RedCubearxiv)

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)

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

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.

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)

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. 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. 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.

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

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)

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.

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)

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)

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)

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)

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)

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)

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)

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. 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)

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)

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)

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)

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.

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)

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. 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)

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

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)

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)

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)

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)

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)

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

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)

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.

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

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.

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)

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.

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

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.

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

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)

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)

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.

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. 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)

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)

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

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

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.

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)

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. 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)

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).

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

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

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.

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)

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)

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)

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)

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)

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.

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)

photonics initiative director Andrea Alu

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