Establishment of core technology of embedding heterogeneity materials into high-aspect ratio diffractive grating by using supercritical CO2 fluids

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289294
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Reaction engineering/Process system
• Research Institution: Tohoku University
• Principal Investigator: Hojo Daisuke 東北大学, 原子分子材料科学高等研究機構, 助教 (30511919)
• Co-Investigator(Kenkyū-buntansha): 矢代 航 東北大学, 多元物質科学研究所, 准教授 (10401233)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ナノ粒子超格子 / 中性子位相イメージング

Outline of Final Research Achievements

We proposed chemical fluid deposition (CFD) technique by using supercritical CO2 fluids and are establishing technique to enable to fill Gd materials into high-aspect ratio trench structures for neutron phase imaging. In this research, we try to develop the technique that impregnation of Gd2O3 nanocrystals into the trench to form nanocrystalline supralattice structures by synthesizing supercritical CO2 dispersed Gd2O3 nanocrystals. We deployed 3 step synthesis to obtain those supercritical CO2 dispersed Gd2O3 nanocrystals. First, Gd(III)oleate was synthesized in aqua and then, oleic-acid modified Gd2O3 nanocrystals was synthesized from Gd(III)oleate in Tri-n-octylamine by solvothermal method. Finally, hexafluoroacetylacetone(hfac) modified Gd2O3 nanocrsytals that can be dispersed in supercritical CO2 were obtained by using ligand exchange. Currently, we are developing CFD method that enables to deposit the nanocrystals by decreasing dispersibility with local cooling on substrates.

Free Research Field

気・液・固・超臨界流体反応操作