Advanced Materials

External-Strain Induced Insulating Phase Transition in VO2 Nanobeam and Its Application as Flexible Strain Sensor

Authors

  • Bin Hu,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
    2. State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070 (P. R. China)
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  • Yong Ding,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
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  • Wen Chen,

    Corresponding author
    1. State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070 (P. R. China)
    • State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070 (P. R. China).
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  • Dhaval Kulkarni,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
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  • Yue Shen,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
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  • Vladimir V. Tsukruk,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
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  • Zhong Lin Wang

    Corresponding author
    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
    • School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245 (USA)
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Abstract

The insulating phase transition in a VO2 nanobeam when subjected to external-strain is utilized to fabricate a quick response time, highly reproducible, and high gauge factor strain sensor. Raman spectroscopy combined with electromechanical measurement reveals the working principle.

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