Optically Tunable Mie Resonance VO2 Nanoantennas for Metasurfaces in the Visible

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU141334" target="_blank" >RIV/00216305:26620/21:PU141334 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsphotonics.1c00222" target="_blank" >https://pubs.acs.org/doi/10.1021/acsphotonics.1c00222</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsphotonics.1c00222" target="_blank" >10.1021/acsphotonics.1c00222</a>

Result language
angličtina
Original language name
Optically Tunable Mie Resonance VO2 Nanoantennas for Metasurfaces in the Visible
Original language description
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.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)