We propose a smart window using polymer-networked liquid crystals doped with push-pull azobenzene. Azobenzene is used to provide phase transition from the nematic to isotropic state through the trans-cis isomerization of azobenzene. When exposed to sunlight, the device switches from the opaque nematic phase to the transparent isotropic phase. Switching from the transparent to opaque state can be obtained through rapid cis-trans isomerization of push-pull azobenzene without sunlight exposure. The proposed device can reduce the transmittance of the incident sunlight during daytime, whereas it can scatter the incident light during the night for privacy.
Seung-Won Oh, Jong-Min Baek, Sang-Hyeok Kim, and Tae-Hoon Yoon, "Smart windows using polymer-networked liquid crystals doped with push-pull azobenzene," Proc. SPIE 10125, Emerging Liquid Crystal Technologies XII, 1012515 (Presented at SPIE OPTO: February 02, 2017; Published: 15 February 2017); https://doi.org/10.1117/12.2253680.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for most presentations.
Search our growing collection of more than 18,000 conference presentations, including many plenaries and keynotes.