[8a-C17-1~11] 3.2 Equipment optics and materials

[8a-C17-5] Diffraction properties of HPDLCs fabricated from monomers with low functionality

〇Hiroshi Kakiuchida¹, Akifumi Ogiwara², Akihiko Matsuyama³ (1.AIST, 2.Kobe-C.C.T., 3.KIT)

Keywords:Liquid crystal, Photo-polymerization induced phase separation, Optical diffraction

Holographic polymer dispersed liquid crystals (HPDLCs) have micrometer-scale periodic phase separation structures that consist of liquid crystal (LC) and polymer, and can produce optical diffraction. By the method based on photo-polymerization induced phase separation (P-PIPS), we fabricated HPDLCs that produce Bragg diffractions with individual polarization selections at multiple wavelengths. This fabrication method includes a single-step interferential exposure to the transparent cell of the mixture of LC and monomer filled in it, and does not need complex processes such as multiple exposures and assembly of several diffractive elements. This simple fabrication process has the advantages of cost reduction, integration and enlargement of the devices.