Research Interest
My current research interests focus on investigating wave phenomena of different nature (electromagnetic or mechanical), particularly on studying the mechanisms of wave propagation in complex artificial media, with applications to the areas of applied electromagnetics (from RF and microwaves to terahertz and infrared frequencies), acoustic imaging, advanced metamaterials/metasurfaces, graphene, nanotechnology, RF antennas, cloaking and invisibility, sensing. I have extensively worked on exploiting the extraordinary properties of metamaterial/metasurfaces to manipulate waves at scales smaller than their wavelength, with the ultimate goal of designing ultra-compact devices for robust waveguiding, efficient sensing, or subwavelength imaging, boosting the performance and functionality of the traditional elements in the telecommunication systems. The latest research interest also involves advanced interdisciplinary topics, such as combining wave physics and deep learning techniques for novel applications in imaging, sensing, and artificial intelligence.
Bakhtiyar Orazbayev received the Specialist in Physics degree from the People’s Friendship University of Russia (RUDN), Moscow, Russia, in 2011. After, he received MS and Ph.D. degrees from the Public University of Navarre (UPNA), Pamplona, Spain in 2015, and 2016 respectively. From 2017 until 2021, he was hired as a scientist at the École Polytechnique Fédérale de Lausanne (EPFL), one of the top world universities that perform world-leading research in various fields, including natural sciences and engineering. In the group of Prof. Romain Fleury, a world-recognized expert in topological photonics and non-reciprocal acoustics, he was involved in research projects on electromagnetics and acoustics.
- Orazbayev and R. Fleury, “Far-field subwavelength acoustic imaging by deep learning,” Phys. Rev. X 10, 031029, 2020.
- Orazbayev and R. Fleury, “Quantitative robustness analysis of topological edge modes in C6 and Valley-Hall metamaterial waveguides”, Nanophotonics 8(8):1433–1441, 2019.
- Orazbayev, N. Kaina, and R. Fleury, “Chiral Waveguides for Robust Waveguiding at the Deep Subwavelength Scale,” Physical Review Applied. American Physical Society, 10(1), p. 54069, 2018.
- Orazbayev, P. Rodríguez-Ulibarri, and M. Beruete, “Wideband backscattering reduction at terahertz using compound reflection grating,” Optics Express, 25(19), p. 22905, 2017.
- Orazbayev, M. Beruete, A. Martínez, and C. García-Meca, “Diffusive-light invisibility cloak for transient illumination,” Phys. Rev. A, 94(6):063850, 2016.
- Orazbayev, N. Mohammadi Estakhri, A. Alù, and M. Beruete, “Experimental demonstration of metasurface-based ultrathin carpet cloak for millimetre waves,” Adv. Opt. Mater., DOI: 10.1002/adom.201600606, 2016.
- Orazbayev, M. Beruete, and I. Khromova, “Tunable beam steering enabled by graphene metamaterials,” Opt. Express, vol. 24, no. 8, pp. 8848–8861, 2016.
- Orazbayev, N. Mohammadi Estakhri, M. Beruete, and A. Alù, “Terahertz carpet cloak based on a ring resonator metasurface,” Phys. Rev. B, vol. 91, no. 19, p. 195444, 2015.
- Orazbayev, M. Beruete, V. Pacheco-Peña, G. Crespo, J. Teniente, and M. Navarro-Cía, “Soret Fishnet Metalens Antenna,” Sci. Rep., vol. 4, p. 9988, 2015.
- Orazbayev, V. Pacheco-Peña, M. Beruete, and M. Navarro-Cía, “Exploiting the dispersion of the double-negative-index fishnet metamaterial to create a broadband low-profile metallic lens,” Opt. Express, vol. 23, no. 7, pp. 8555–8564, 2015.
Physics II
Computational Physics with Laboratory
