- Research Assistant Professor, Photonics Initiative
- Facility Director, Photonics Core Facility
Alex Krasnok’s research spans applied physics, photonics, and nanotechnology with a particular focus on innovative and extreme aspects of wave interaction with natural and artificial materials. He has made significant contributions in areas such as extreme scattering engineering, nanoantennas, metasurfaces, optics of 2D transition-metal dichalcogenides, and low-loss dielectric nanostructures. He has authored or co-authored four books and book chapters, four patents, and more than 110 papers (as of April 2019) including Nature Photonics, Nature Materials, Physical Review Letters to mention just a few. Alex earned his Ph.D. with distinction from ITMO University, St Petersburg, Russia, in 2013, and he has a B.Sc. and an M.Sc. (with honors), both in Optics. He has also earned several research awards and grants, including the gold medal of Nobel Laureate Zhores Alferov’s Foundation (2016).
Alex joined the ASRC CUNY from University of Texas at Austin where he was a research scientist in the Metamaterials and Plasmonics Research Group within the Department of Electrical and Computer Engineering.
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. 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. 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.
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. 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)
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)
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)
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.
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)
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)
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. 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. 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)
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)