Control of the colloid agglomeration using laser irradiation and its application on the nano-micro structure fabrication

2015 Fiscal Year Final Research Report

• Project/Area Number: 25390042
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nano/Microsystems
• Research Institution: Shimane University
• Principal Investigator: Tsuji Takeshi 島根大学, 総合理工学研究科(研究院), 准教授 (50284568)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: コロイド / 微粒子 / ナノ材料 / レーザー

Outline of Final Research Achievements

Laser melting in liquids attracts much attention as a novel technique to prepare spherical particles of sub-micron size. In this research, we have applied this technique to prepare gold sub-micron particles (AuSMP) and investigated the formation mechanism. As a result of the investigation, we have clarified following things.
1) The agglomeration of the source gold nanoparticles is necessary to obtain AuSMP. 2) When stabilizing reagent is used, the agglomeration is induced by laser irradiation dynamically. 3) As the stabilizing reagents, inorganic salts such as NaCl can be used as well as the ordinary stabilizing reagents such as sodium citrate. 4) The stabilizing reagents influence on the agglomeration process and AuSMP size.

Free Research Field

物理化学，光化学，ナノ材料科学