Synthesis of Insulative Single Crystalline Oxide Nanowires for Extracting Nanoscale Properties of Oxides

2017 Fiscal Year Final Research Report

• Project/Area Number: 26706005
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Nanomaterials engineering
• Research Institution: Kyushu University (2015-2017); Osaka University (2014)
• Principal Investigator: Kazuki Nagashima 九州大学, 先導物質化学研究所, 准教授 (10585988)
• Research Collaborator: YOSHIDA HIDETO 大阪大学, 産業科学研究所, 准教授 ; SHIBATA NAOYA 東京大学, 工学研究科, 教授 ; KANEMOTO KATSUICHI 大阪市立大学, 理学研究科, 准教授
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 単結晶酸化物ナノワイヤ / 自己組織化 / デバイス / 界面

Outline of Final Research Achievements

Self-assembled single-crystalline metal oxide nanowires are attractive nanomaterials due to their various functionality, stability in air/water, spatially selective growth and designable structure. However, an unintentional doping in metal oxide nanowire has hindered the extraction of intrinsic nature of metal oxide nanowires and therefore it has been a long-standing issue in this research field. In this study, the generation mechanism of such unintentional doping, which is based on two competitive crystal growth interfaces, was successfully clarified and a rational design concept to synthesize the highly crystalline metal oxide nanowires with drastically suppressed unintentional doping was demonstrated for the first time. These findings will pave a way to extract the various fascinating functionalities of metal oxide nanowires towards novel nanodevice applications.

Free Research Field

ナノ材料科学