Functonalization of Structurally Colored Materials based on Amorphous Array of Colloidal Particles

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630320
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Hiroshima University
• Principal Investigator: KATAGIRI Kiyofumi 広島大学, 工学(系)研究科(研究院), 准教授 (30432248)
• Co-Investigator(Kenkyū-buntansha): TAKEOKA Yukikazu 名古屋大学, 大学院工学研究科, 准教授 (20303084)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 構造色 / コア－シェル粒子 / 電気泳動電着 / コーティング膜 / 交互積層法 / コロイド粒子

Outline of Final Research Achievements

Recently, development of colored pigments with low-toxicity and minimal environmental impact attracts much attention. Structural color of colloidal crystals is one of the most versatile candidates. However, structural color of colloidal crystals has angle-dependence and restrictions for coating. In this study, angle-independent structural color materials based on amorphous array of colloidal particles were investigated. Firstly, SiO2-TiO2 monodispersed particles were developed for achievement of photochromism of structural color materials. Secondly, structural color coatings were prepared by an electrophoretic deposition (EPD) method using monodispersed SiO2 particles and carbon black nanoparticles. Influences of applied voltage and deposition time of EPD on the thickness and array structure of coating films were investigated in detail.

Free Research Field

無機材料科学