Abstract
Photonic crystal is a new type of optical material in which a refractive index or dielectric constant is periodically changed. It is easy to fabricate 3-D periodic structures using textile technology. The main goal of our study has been, therefore, to fabricate the flexible photonic crystals by using high-dielectric-constant fibrous material. For this purpose, in this study, the high-dielectric-constant fiber was fabricated by coating of TiO2 particles onto the cotton-yarn by irradiation of ultraviolet light (UV), since the TiO2 is a photocatalytic material.