Strongly enhanced sensitivity in elastic capacitive strain sensors

Strongly enhanced sensitivity in elastic capacitive strain sensors

Strain sensors based on dielectric elastomer capacitors function by the direct coupling of mechanical deformations with the capacitance. The coupling can be improved by enhancing the relative permittivity of the dielectric elastomer. Here, this is carried out through the grafting of conducting polym...

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Bibliographic Details
Main Authors: Kollosche, Matthias (Author), Stoyanov, Hristiyan (Author), Laflamme, Simon (Contributor), Kofod, Guggi (Author)
Other Authors: Massachusetts Institute of Technology. Department of Civil and Environmental Engineering (Contributor)
Format: Article
Language:English
Published: Royal Society of Chemistry, 2012-02-13T17:52:17Z.
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Summary:Strain sensors based on dielectric elastomer capacitors function by the direct coupling of mechanical deformations with the capacitance. The coupling can be improved by enhancing the relative permittivity of the dielectric elastomer. Here, this is carried out through the grafting of conducting polymer (poly-aniline) to the elastomer backbone, leading to molecular composites. An enhancement in capacitance response of 46 times is observed. This could help to extend the possible range of miniaturization towards even smaller device features.
Germany. Federal Ministry of Education and Research (BMBF) (project KompAkt-03X5511)

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