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A New Theoretical Model of a Carbon Nanotube Strain Sensor |
| QIU Wei1, KANG Yi-Lan1, LEI Zhen-Kun2, QIN Qing-Hua3, LI Qiu1 |
| 1Department of Mechanics, Tianjin University, Tianjin 3000722Department of Engineering Mechanics, Dalian University of Technology, Dalian 1160243Department of Engineering, Australian National University, Canberra ACT 2601, Australia |
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QIU Wei, KANG Yi-Lan, LEI Zhen-Kun et al 2009 Chin. Phys. Lett. 26 080701 |
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Abstract Carbon nanotubes (CNTs) are potential strain sensors due to their excellent mechanical and spectral properties. A new theoretical model of a CNT strain sensor is obtained by applying the polarized Raman properties of CNTs, which calculates the synthetic contributions of Raman spectra from the CNTs in random directions. By using this theoretical model, the analytic relationship between planar strain components and the Raman shift increment of uniformly dispersed CNTs is obtained, which is applicable for accurately characterizing the strain in random directions on the surface of a measured microsystem.
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07.10.Pz
81.70.Fy
81.05.Tp
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Received: 27 March 2009
Published: 30 July 2009
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