File Download

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

서관용

Seo, Kwanyong
The SEO Group
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Dynamic selection of visible wavelengths using resonant TiO2 nanostructures

Author(s)
Um, Han-DonChoi, DeokjaeSolanki, AmitHuang, EmeraldSeo, KwanyongHabbal, Fawwaz
Issued Date
2023-05
DOI
10.1515/nanoph-2023-0057
URI
https://scholarworks.unist.ac.kr/handle/201301/64410
Citation
NANOPHOTONICS, v.12, no.11, pp.1995 - 2005
Abstract
Abstract
All-dielectric nanoarrays have strong electromagnetic resonances with various interesting applications and are tuned by adjusting their geometrical parameters. However, their optical properties are permanently encoded during fabrication. This study presents robust dynamically tunable all-dielectric nanoresonators for controllable, reversible, and reproducible color filtering. Our design uses an array of TiO2 nanodiscs embedded in a transparent, stretchable polydimethylsiloxane (PDMS) membrane and exhibits a narrow spectral response due to Mie magnetic and electric dipole resonances hybridized with the TiO2 nanodiscs lattice modes. By mechanically stretching the PDMS membrane, the pitch of the TiO2 nanodiscs was increased and the spectral location of the resonances was altered. Additionally, an optically asymmetric structure was fabricated by partially embedding TiO2 nanodiscs in PDMS. Thus, the magnitude of the Rayleigh anomaly diffraction, which could interrupt the dipole resonances, was reduced. Our design has sharp, frequency-tunable resonances in the visible spectrum, and we demonstrated dynamic tunability by stretching the metasurfaces.
Publisher
Walter de Gruyter GmbH
ISSN
2192-8606
Keyword (Author)
dielectric metasurfacehybridized modeslattice resonancemagnetic and electric dipole resonancestitanium dioxidetunable metasurface
Keyword
MAGNETIC DIPOLE RESONANCESMETASURFACE

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.