Control of the drying pattern of colloid dispersion by a local energy injection

2014 Fiscal Year Final Research Report

• Project/Area Number: 25810049
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Kyoto University
• Principal Investigator: MUKAI Sada-atsu 京都大学, 工学(系)研究科(研究院), 准教授 (30371735)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: コロイド分散液 / パターン形成 / 散逸構造

Outline of Final Research Achievements

Dissipative structures which are emerged under non-equilibrium process have a wide diversity of morphology. Recently, such dissipative structures are used for the method to prepare novel structured materials. In this study, we adopted a coffee ring effect, which was a ring-like deposit remained after evaporation of particle dispersion, and attempted to prepare particle-integrated structure. By changing the evaporation condition, and by applying the external energy input, we controlled the water flow in a droplet of particle dispersion. We discussed the particle size dependence of the drying patterns. In addition, we prepared ring-like structures into which nano-scale gel particles integrate. The method has a potential for preparing nanoparticle-integration materials in various fields.

Free Research Field

ソフトマターの物理