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KEPIČ, P. LIGMAJER, F. HRTOŇ, M. REN, H. MENEZES, L. MAIER, S. ŠIKOLA, T.
Original Title
Optically Tunable Mie Resonance VO2 Nanoantennas for Metasurfaces in the Visible
Type
journal article in Web of Science
Language
English
Original Abstract
Metasurfaces are ultrathin nanostructured surfaces that can allow arbitrary manipulation of light. Implementing dynamic tunability into their design could allow the optical functions of metasurfaces to be rapidly modified at will. The most pronounced and robust tunability of optical properties is provided by phase-change materials such as vanadium dioxide (VO2) and germanium antimony telluride (GST), but their implementations have been limited only to near-infrared wavelengths. Here, we demonstrate that VO2 nanoantennas with widely tunable Mie resonances can be utilized for designing tunable metasurfaces in the visible range. In contrast to the dielectric-metallic VO2 phase transition-induced tunability in previous demonstrations, we show that persisting dielectric Mie resonances in VO2 nanoantennas offer remarkable scattering and extinction modulation depths (5-8 dB and 1-3 dB, respectively) for tunability in the visible. Moreover, these strong resonances are optically switchable using a continuous-wave laser. Our results establish VO2 nanostructures as low-loss building blocks of optically tunable metasurfaces.
Keywords
Mie resonance; nanoantenna; metasurface; tunability; visible; Huygens' sources
Authors
KEPIČ, P.; LIGMAJER, F.; HRTOŇ, M.; REN, H.; MENEZES, L.; MAIER, S.; ŠIKOLA, T.
Released
12. 4. 2021
Publisher
AMER CHEMICAL SOC
Location
WASHINGTON
ISBN
2330-4022
Periodical
ACS Photonics
Year of study
8
Number
4
State
United States of America
Pages from
1048
Pages to
1057
Pages count
10
URL
https://pubs.acs.org/doi/10.1021/acsphotonics.1c00222
BibTex
@article{BUT172192, author="Peter {Kepič} and Filip {Ligmajer} and Martin {Hrtoň} and Haoran {Ren} and Leonardo de S. {Menezes} and Stefan A. {Maier} and Tomáš {Šikola}", title="Optically Tunable Mie Resonance VO2 Nanoantennas for Metasurfaces in the Visible", journal="ACS Photonics", year="2021", volume="8", number="4", pages="1048--1057", doi="10.1021/acsphotonics.1c00222", issn="2330-4022", url="https://pubs.acs.org/doi/10.1021/acsphotonics.1c00222" }