Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8674
Title: In situ SEM studies on strain sensing mechanisms of PPy-coated electrically conducting fabrics
Authors: Xue, P
Tao, XM 
Tsang, HY
Keywords: Electrically conducting fabrics
Sensitivity
Strain sensing mechanism
Issue Date: 2007
Publisher: North-Holland
Source: Applied surface science, 2007, v. 253, no. 7, p. 3387-3392 How to cite?
Journal: Applied surface science 
Abstract: This paper studies a flexible fabric strain sensor from PPy-coated fabrics prepared by a chemical vapor deposition method under low temperature, placing an emphasis on mechanisms of its strain sensing behavior. In situ tensile tests in a scanning electron microscope (SEM) were conducted for PPy-coated electrically conducting yarns, which were prepared by the same procedure as that for the PPy-coated fabrics, enabling it possible to observe in situ the phenomena that occurred on the fiber surface during fabric deformation. The investigation revealed that the PPy-coated nylon/polyurethane fabrics exhibited a high strain sensitivity of over 400 and very large workable strain range greater than 50%, which mainly attributes to the high conductivity and crack-opening and crack-closing mechanisms of PPy-coated polyurethane yarn, as well as the excellent properties of knitted fabric structure.
URI: http://hdl.handle.net/10397/8674
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2006.07.003
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