A
Andrei Komar
Researcher at Australian National University
Publications - 28
Citations - 1110
Andrei Komar is an academic researcher from Australian National University. The author has contributed to research in topics: Dielectric & Liquid crystal. The author has an hindex of 9, co-authored 25 publications receiving 663 citations. Previous affiliations of Andrei Komar include Belarusian State University & Centre for Ultrahigh Bandwidth Devices for Optical Systems.
Papers
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Journal ArticleDOI
Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces
Andrei Komar,Ramón Paniagua-Domínguez,Andrey E. Miroshnichenko,Ye Feng Yu,Yuri S. Kivshar,Arseniy I. Kuznetsov,Dragomir N. Neshev +6 more
TL;DR: In this article, the authors demonstrate the dynamic switching of beam deflection by a silicon-nanodisk dielectric metasurface infiltrated with liquid crystals, and show the switching of a laser beam from 0° to a 12° angle with an efficiency of 50% by heating the metasuran surface to modify the liquid crystal state from nematic to isotropic.
Journal ArticleDOI
Electrically tunable all-dielectric optical metasurfaces based on liquid crystals
Andrei Komar,Zheng Fang,Justus Bohn,Jürgen Sautter,Manuel Decker,Andrey E. Miroshnichenko,Thomas Pertsch,Igal Brener,Yuri S. Kivshar,Isabelle Staude,Isabelle Staude,Dragomir N. Neshev +11 more
TL;DR: In this paper, the authors demonstrate electrical tuning of the spectral response of a Mie-resonant dielectric metasurface consisting of silicon nanodisks embedded into liquid crystals.
Journal ArticleDOI
Reversible Thermal Tuning of All‐Dielectric Metasurfaces
Mohsen Rahmani,Lei Xu,Lei Xu,Andrey E. Miroshnichenko,Andrei Komar,Rocio Camacho-Morales,Haitao Chen,Yair Zárate,Sergey Kruk,Guoquan Zhang,Dragomir N. Neshev,Yuri S. Kivshar +11 more
TL;DR: In this article, an all-dielectric metasurface with sharp resonances by achieving interference between magnetic dipole and electric quadrupole modes of constituted nanoparticles arranged in a 2D lattice is shown.
Journal ArticleDOI
Active Tuning of Spontaneous Emission by Mie-Resonant Dielectric Metasurfaces
Justus Bohn,Tobias Bucher,Katie E. Chong,Andrei Komar,Duk-Yong Choi,Dragomir N. Neshev,Yuri S. Kivshar,Thomas Pertsch,Isabelle Staude +8 more
TL;DR: The dynamic tuning of spontaneous emission from a Mie-resonant dielectric metasurface that is situated on a fluorescent substrate and embedded into a liquid crystal cell is experimentally demonstrated and is demonstrated to be a viable strategy to realize flat tunable light sources based on dielectrics meetasurfaces.
Journal ArticleDOI
Electrically Tunable Transparent Displays for Visible Light Based on Dielectric Metasurfaces
Chengjun Zou,Andrei Komar,Stefan Fasold,Justus Bohn,Alexander Muravsky,Anatoli Murauski,Thomas Pertsch,Dragomir N. Neshev,Isabelle Staude +8 more
TL;DR: In this paper, the authors demonstrate electrically tunable transparent displays based on nematic liquid crystals (LCs) infiltrated tunable dielectric metasurfaces at visible frequencies.