Memory Metamaterials

Author:

Driscoll T.1,Kim Hyun-Tak2,Chae Byung-Gyu2,Kim Bong-Jun2,Lee Yong-Wook23,Jokerst N. Marie4,Palit S.4,Smith D. R.4,Di Ventra M.1,Basov D. N.1

Affiliation:

1. Department of Physics, University of California at San Diego (UCSD), La Jolla, CA 92093, USA.

2. Metal-Insulator Transition Lab, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305-350, Republic of Korea.

3. School of Electrical and Engineering, Pukyong National University, Busan 608-739, Republic of Korea.

4. Center for Metamaterials and Integrated Plasmonics and Electrical and Computer Engineering Department, Duke University, Post Office Box 90291, Durham, NC 27708, USA.

Abstract

Tunable Metamaterials The electromagnetic response of metamaterials gives rise to exciting phenomena such as cloaking, negative refraction, and perfect lensing. Their response, however, tends to depend strongly on resonant effects, thereby limiting the application bandwidth. Driscoll et al. (p. 1518 , published online 20 August) combine a split ring resonator array with the phase change material, VO 2 , to form a metamaterial in which the response can be tuned. The heat-induced phase change of VO 2 from an insulator to a metal alters the response of split-ring resonator, and, because it displays a hysteresis, the device can retain a “memory” of the induced change. The results may lead to a flexible method for achieving metamaterials operating over a wide bandwidth and to novel switching applications.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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