A mechanically tunable grating is demonstrated by introducing high refractive-index titanium dioxide (TiO2) nanoscale dot gratings into soft, elastomeric polydimethylsiloxane. In situ diffraction angle measurements of uniaxial strain-induced grating response are backed by finite element modeling of strain distribution. These gratings offer low mechanical impact on the elastomeric substrate as well as excellent linear tunability.
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Gutruf et al. (2015) studied this question.
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