Investigation of a new graphene strain sensor based on surface plasmon resonance

被引:10
|
作者
Ma, Zenghong [1 ]
Chen, Zijian [2 ,4 ]
Xu, Jian [1 ]
Li, Weiping [1 ]
Zhang, Lian [1 ]
Wang, Lei [3 ]
机构
[1] Tianjin Sino German Univ Appl Sci, Basic Expt & Training Ctr, Tianjin 300350, Peoples R China
[2] Tianjin Sino German Univ Appl Sci, New Energy Dept, Tianjin 300350, Peoples R China
[3] Xinyang Normal Univ, Coll Phys & Elect Engn, Xinyang 464000, Peoples R China
[4] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China
关键词
HIGH-PERFORMANCE; OXIDE;
D O I
10.1038/s41598-020-73834-2
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The high confinement of surface plasmon polaritons in graphene nanostructures at infrared frequencies can enhance the light-matter interactions, which open up intriguing possibilities for the sensing. Strain sensors have attracted much attention due to their unique electromechanical properties. In this paper, a surface plasmon resonance based graphene strain sensor is presented. The considered sensing platform consists of arrays of graphene ribbons placed on a flexible substrate which enables efficient coupling of an electromagnetic field into localized surface plasmons. When the strain stretching is applied to the configuration, the localized surface plasmon resonance frequency sensitively shift. The strain is then detected by measuring the frequency shifts of the localized plasmon resonances. This provides a new optical method for graphene strain sensing. Our results show that the tensile direction is the key parameter for strain sensing. Besides, the sensitivity and the figure of merit were calculated to evaluate the performance of the proposed sensor. The calculated figure of merit can be up to two orders of magnitude, which could be potentially useful from a practical point of view.
引用
收藏
页数:8
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