Thermally switchable metamaterial absorber with a VO2 ground plane
Data(s) |
2015
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Resumo |
A tri-layer metamaterial absorber, composed of a metal structure/dielectric spacer/vanadium dioxide (VO2) ground plane, is shown to switch reversibly between reflective and absorptive states as a function of temperature. The VO2 film, which changes its conductivity by four orders of magnitude across a insulator-metal transition at about 68 degrees C, enables the switching by forming a resonant absorptive structure at high temperatures while being inactive at low temperatures. The fabricated metamaterial shows a modulation of the reflectivity levels of 58% at a frequency of 22.5 THz and 57% at a frequency of 34.5 THz. (C) 2015 Elsevier B.V. All rights reserved. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/51545/1/opt_com-346_154_2015.pdf Naorem, Rameshwari and Dayal, Govind and Ramakrishna, Anantha S and Rajeswaran, Bharathi and Umarji, AM (2015) Thermally switchable metamaterial absorber with a VO2 ground plane. In: OPTICS COMMUNICATIONS, 346 . pp. 154-157. |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
http://dx.doi.org/10.1016/j.optcom.2015.01.075 http://eprints.iisc.ernet.in/51545/ |
Palavras-Chave | #Materials Engineering (formerly Metallurgy) |
Tipo |
Journal Article PeerReviewed |