Thermal tuning of infrared resonant absorbers based on hybrid gold-VO<inf>2</inf> nanostructures
Applied Physics Letters
American Institute of Physics Inc.
Item Usage Stats
MetadataShow full item record
Resonant absorbers based on plasmonic materials, metamaterials, and thin films enable spectrally selective absorption filters, where absorption is maximized at the resonance wavelength. By controlling the geometrical parameters of nano/microstructures and materials' refractive indices, resonant absorbers are designed to operate at wide range of wavelengths for applications including absorption filters, thermal emitters, thermophotovoltaic devices, and sensors. However, once resonant absorbers are fabricated, it is rather challenging to control and tune the spectral absorption response. Here, we propose and demonstrate thermally tunable infrared resonant absorbers using hybrid gold-vanadium dioxide (VO<inf>2</inf>) nanostructure arrays. Absorption intensity is tuned from 90% to 20% and 96% to 32% using hybrid gold-VO<inf>2</inf> nanowire and nanodisc arrays, respectively, by heating up the absorbers above the phase transition temperature of VO<inf>2</inf> (68°C). Phase change materials such as VO<inf>2</inf> deliver useful means of altering optical properties as a function of temperature. Absorbers with tunable spectral response can find applications in sensor and detector applications, in which external stimulus such as heat, electrical signal, or light results in a change in the absorption spectrum and intensity. © 2015 AIP Publishing LLC.
Phase change materials
Published Version (Please cite this version)http://dx.doi.org/10.1063/1.4918938
Showing items related by title, author, creator and subject.
Kokabi, A.; Hosseini, M.; Saeedi, S.; Moftakharzadeh, A.; Vesaghi, M.A.; Fardmanesh, M. (2011)The infrared range optical absorption mechanism of carbon-copper composite thin layer coated on the diamond-like carbon buffer layer has been investigated. By consideration of weak interactions between copper nanoparticles ...
Ayas S.; Bakan, G.; Ozgur E.; Celebi, K.; Dana, A. (American Chemical Society, 2016)Infrared absorption spectroscopy has greatly benefited from the electromagnetic field enhancement offered by plasmonic surfaces. However, because of the localized nature of plasmonic fields, such field enhancements are ...
Elkabbash, M.; Rashed, A.R.; Kucukoz, B.; Nguyen, Q.; Karatay, A.; Yaglioglu, G.; Ozbay, E.; Caglayan, H.; Strangi, G. (Royal Society of Chemistry, 2017)We study the exciton-plasmon dynamics that lead to optical loss mitigation via ultrafast transient absorption spectroscopy (UTAS) on hybrid aggregates of core-shell quantum dots (QDs) and Au nanoparticles (NPs). We highlight ...