Abstract
Electrically tuned photonic crystals are produced by applying fields across shear-assembled elastomeric polymer opal thin films. At increasing voltages, the polymer opal films stretch biaxially under Maxwell stress, deforming the nanostructure and producing marked color changes. This quadratic electro-optic tuning of the photonic bandgap is repeatable over many cycles, switches within 100 ms, and bridges the gap between electro-active materials and photonic crystals.
Type
Publication
Appl Phys Lett 2012, 100 (10), 101902
Qibin Zhao
Associate Professor
My research interests include colloidal assembly, order and disordered structures for optical and energy related applicaitons, scalable methods for nanomaterial fabrication, biomimetics and evolution.