Study on the CNT Sensor for Strain Measurement and Its Control Method of Raman Polarization
LI Shi-lei1, QIU Wei1*, KANG Yi-lan1, LEI Zhen-kun2, LI Qiu1, DENG Wei-lin 1, GAO Di1
1. Tianjin Key Laboratory of Modern Engineering Mechanics, Department of Mechanics, Tianjin University, Tianjin 300072, China 2. State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
Abstract：The present paper studied the methodology of carbon nanotube (CNT) sensor applicable for the strain measurement in microscale. Based on the varieties of polarization configurations of the Raman spectrometers, a series of analytic expressions of CNT sensor were derived by applying the Raman properties of the CNT, such as the strain sensitivity and the polarization selectivity. From the viewpoint of metrology, the sensoring relationships corresponding to different polarization configurations were compared and contrasted with one another, which educed that the “bipolar homology” type is most suitable for the strain measurement where both the incident and scattered lights are continuously controllable and always remain parallel to each other. A new easy-realized control method for this configuration is introduced. The experiments proved that the method presented in this paper can effectively measure the in-plane strain components in microscale by polarized micro-Raman spectroscopy.
Key words：Polarized micro-Raman spectroscopy;Carbon nanotube sensor;In-plane strain measurement;Polarization configuration and control
李石磊1，仇 巍1*，亢一澜1，雷振坤2，李 秋1，邓卫林1，高 頔1 . 碳纳米管应变传感测量与偏振拉曼控制方法研究 [J]. 光谱学与光谱分析, 2013, 33(05): 1244-1248.
LI Shi-lei1, QIU Wei1*, KANG Yi-lan1, LEI Zhen-kun2, LI Qiu1, DENG Wei-lin 1, GAO Di1 . Study on the CNT Sensor for Strain Measurement and Its Control Method of Raman Polarization . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(05): 1244-1248.
[1] Qiu W, Kang Y L, Li Q. Applied Physics Letters, 2008, 92(4): 041906. [2] Li Q, Kang Y L, Qiu W. Nanotechnology, 2011, 22(22): 225704. [3] Ward Y, Young R J, Shatwell R A. Journal of Materials Science, 2004, 39(22): 6781. [4] Prasithphol W, Young R J. Journal of Materials Science, 2005, 40(20): 5381. [5] Lei Z K, Qiu W, Kang Y L. Composites Part A, 2008, 39(1): 113. [6] Liu L, Ma P C, Xu M, et al. Composites Science and Technology, 2012, 72(13): 1548. [7] Gao Y, Li L Y, Tan P H, et al. Chinese Science Bulletin, 2010, 55(35): 3978. [8] Cooper C A, Young R J, Halsall M. Composites Part A, 2001, 32(3-4): 401. [9] Cronin S B, Swan A K, Unlu M S. Physical Review B, 2005, 72(3): 035425. [10] Frogley M D, Zhao Q, Wagner H D. Physical Review B, 2002, 65(11): 113413. [11] Qiu W, Kang Y L, Lei Z K. Journal of Raman Spectroscopy, 2010, 41(10): 1216.
