Self-assembly of colloidal molecules

2015 Fiscal Year Final Research Report

• Project/Area Number: 25870493
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Biological physics/Chemical physics/Soft matter physics; Nanostructural chemistry
• Research Institution: Kyushu University
• Principal Investigator: Iwashita Yasutaka 九州大学, 理学(系)研究科(研究院), 助教 (50552494)
• Research Collaborator: KIMURA YASUYUKI 九州大学, 大学院理学研究院, 教授 (00225070) ; NOGUCHI TOMOHIRO 九州大学, 大学院理学研究院, 博士3年 ; KOIKE RYOTARO 九州大学, 理学府・物理学科 ; YOSHIHARA KOKI 九州大学, 理学府・物理学科
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: パッチ粒子 / コロイド / 自己組織化 / 方向秩序 / メソ構造

Outline of Final Research Achievements

We studied self-organization behaviors of spherical patchy colloidal particles, whose patches bond each other by the sticky interaction between them. We have revealed their unique self-organized structures in experiment and numerical simulation; the structures are different from those observed in conventional colloidal systems. In particular, followings were realized for the first time in this project: We (i) established the experimental system where the anisotropic interaction between patchy particles can be continuously controlled, and (ii) realized the systematic control over mesoscopic structures formed by the purely orientational order in patchy particles. Our study clarified the fundamental aspects of collective behaviors in anisotropic colloidal particles, which have attracted attentions of researchers recently. In addition, the patchy particle system would be a new mesostructured material and applied to a broad range of nano- and microsystems.

Free Research Field

ソフトマター物理