Opal-templated films for optical strain sensing

A polydimethylsiloxane film patterned by a self-assembled array has been demonstrated as a strain sensor. A monolayer of 580 nm polystyrene spheres prepared by convective deposition was the template to transfer a periodic pattern to a polydimethylsiloxane (PDMS) film. Optical diffraction through the...

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Bibliographic Details
Published in:Optics express 2020-05, Vol.28 (11), p.16280-16287
Main Authors: Sitpathom, Nonthanan, Muangnapoh, Tanyakorn, Dawes, Judith M.
Format: Article
Language:English
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Summary:A polydimethylsiloxane film patterned by a self-assembled array has been demonstrated as a strain sensor. A monolayer of 580 nm polystyrene spheres prepared by convective deposition was the template to transfer a periodic pattern to a polydimethylsiloxane (PDMS) film. Optical diffraction through the stretched PDMS film, enabled strain sensing perpendicular and parallel to the stretching direction, with sensitivities of 1.7 nm/% strain and 4.0 nm/% strain, respectively. The PDMS film was used as a vibration sensor at 50 Hz.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.390095