Fabrication of liquid-crystalline polymer films with cycloidal molecular alignment patterns by scanning wave photopolymerization

Hirona Nakamura; Yoshiaki Kobayashi; Megumi Ota; Miho Aizawa; Shoichi Kubo; Atsushi Shishido

doi:10.1117/12.2596298

1 August 2021 Fabrication of liquid-crystalline polymer films with cycloidal molecular alignment patterns by scanning wave photopolymerization

Hirona Nakamura, Yoshiaki Kobayashi, Megumi Ota, Miho Aizawa, Shoichi Kubo, Atsushi Shishido

Author Affiliations +

Proceedings Volume 11807, Liquid Crystals XXV; 1180714 (2021) https://doi.org/10.1117/12.2596298
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Conference Poster

Abstract

The control of molecular alignment patterns in liquid crystals is key to developing high-performance optical devices. In particular, two-dimensionally designed patterns have attracted much attention due to their potential application to novel optical devices such as a high efficiency polarization grating and a vortex converter. However, there remain challenges in obtaining molecular alignment patterns by a simple method. We have recently proposed a novel method for controlling the alignment of liquid crystals termed scanning wave photopolymerization (SWaP). In this method, a mass flow triggered by spatiotemporal photopolymerization causes shear stresses to anisotropic molecules, resulting in the generation of alignment patterns finely guided by the scanned light. In this study, we present the direct fabrication of polymer films with cycloidal molecular alignment patterns by SWaP.

Conference Presentation

Citation Download Citation

Hirona Nakamura, Yoshiaki Kobayashi, Megumi Ota, Miho Aizawa, Shoichi Kubo, and Atsushi Shishido "Fabrication of liquid-crystalline polymer films with cycloidal molecular alignment patterns by scanning wave photopolymerization", Proc. SPIE 11807, Liquid Crystals XXV, 1180714 (1 August 2021); https://doi.org/10.1117/12.2596298

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