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Tunability THz metamaterials base on the dielectric nonlinear of barium strontium titanate

Zhao Qiang Wen Qi-Ye Dai Yu-Han Zhang Ji-Hua Chen Hong-Wei Yang Chuan-Ren Zhang Wan-Li

Tunability THz metamaterials base on the dielectric nonlinear of barium strontium titanate

Zhao Qiang, Wen Qi-Ye, Dai Yu-Han, Zhang Ji-Hua, Chen Hong-Wei, Yang Chuan-Ren, Zhang Wan-Li
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  • Received Date:  03 July 2012
  • Accepted Date:  21 August 2012
  • Published Online:  20 February 2013

Tunability THz metamaterials base on the dielectric nonlinear of barium strontium titanate

  • 1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Fund Project:  Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 61131005), the National Natural Science Foundation of China (Grant No. 61201007), and the Fundamental Research Fund for the Central Universities of China (Grant Nos. ZYGX2011J022, ZYGX2010J034).

Abstract: We present the tunable resonance behavior of laminated metal mesh metamaterial embedded by barium strontium titanate (BST) thin film. The electromagnetic frequency response shows a redshift when the dielectric constant of BST thin film increases, and the tunability is about 22.6%. For the tunable metamaterial proposed in this paper, the structural unit of metal graphics is used as electrodes to apply the electric potential, which simplifies the preparation and application of tunable THz metamaterials greatly. It has potential application in the THz media modulators.

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