Tunable VO{sub 2}/Au hyperbolic metamaterial

Journal Article · Mon Aug 08 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4954382· OSTI ID:22594337

Prayakarao, S.; Mendoza, B.; Devine, A. ^[1]; Kyaw, C. ^[1]; Dover, R. B. van ^[2]; Liberman, V. ^[3]

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1. Summer Research Program, Center for Materials Research, Norfolk State University, Norfolk, Virginia 23504 (United States)
2. Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14850 (United States)
3. MIT LINCOLN Laboratory, 244 Wood Street, Lexington, Massachusetts 02420 (United States)

Vanadium dioxide (VO{sub 2}) is known to have a semiconductor-to-metal phase transition at ∼68 °C. Therefore, it can be used as a tunable component of an active metamaterial. The lamellar metamaterial studied in this work is composed of subwavelength VO{sub 2} and Au layers and is designed to undergo a temperature controlled transition from the optical hyperbolic phase to the metallic phase. VO{sub 2} films and VO{sub 2}/Au lamellar metamaterial stacks have been fabricated and studied in electrical conductivity and optical (transmission and reflection) experiments. The observed temperature-dependent changes in the reflection and transmission spectra of the metamaterials and VO{sub 2} thin films are in a good qualitative agreement with theoretical predictions. The demonstrated optical hyperbolic-to-metallic phase transition is a unique physical phenomenon with the potential to enable advanced control of light-matter interactions.

• OSTI ID: 22594337
• Journal Information: Applied Physics Letters, Vol. 109, Issue 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONDUCTIVITY
FORECASTING
GOLD
INTERACTIONS
LAYERS
METAMATERIALS
PHASE TRANSFORMATIONS
REFLECTION
SEMICONDUCTOR MATERIALS
SPECTRA
TEMPERATURE CONTROL
TEMPERATURE DEPENDENCE
THIN FILMS
TRANSMISSION
VANADIUM OXIDES