Mechanically Tunable High Refractive‐Index Contrast TiO₂–PDMS Gratings

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. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.