Fabriaction, characterization and utilization of nano-supercrital layer

2014 Fiscal Year Final Research Report

• Project/Area Number: 25600026
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: The University of Tokushima
• Principal Investigator: HASHIMOTO Shuichi 徳島大学, ソシオテクノサイエンス研究部, 教授 (70208445)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 金ナノ粒子 / レーザー励起 / ナノ超臨界層 / コロイド / 光熱変換

Outline of Final Research Achievements

We carried out spectroscopic characterization and temperature simulation of　a nano-supercritical layer formed around the gold nanoparticles when the particles are subjected to pulsed-laser irradaition in aqueous solution. We observed the formation of such layers with smaller refractive indecies than water using a picosecond transient extinction spectral measurement. We prepared gold-silica and gold-silver core-shell nanoparticles by laser irradiation under the pressure of 60-100 MPa. The result demonstrated that the nano-supercritical layer is useful for the fabrication of advanced nanomaterials.

Free Research Field

ナノ材料化学