Opal-templated films for optical strain sensing

Nonthanan Sitpathom, Tanyakorn Muangnapoh, Judith M. Dawes*

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)
4 Downloads (Pure)

Abstract

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.

Original languageEnglish
Pages (from-to)16280-16287
Number of pages8
JournalOptics Express
Volume28
Issue number11
DOIs
Publication statusPublished - 25 May 2020

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