Abstract
Microgrooves on self-assembled photonic-crystal (PC) films align liquid crystals (LCs) without any additional rubbing or surface treatment. Nematic (see Figure and inside cover) or twisted-nematic LCs can be formed, depending on the relative orientation of the microgrooved films. A LC Fabry–Perot (FP) cavity was fabricated using these PC films, and electro-optic tuning of FP cavity modes is demonstrated.
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