Shape control of Ag nanocoils and development of electrical and optical applications

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K04085
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 18010:Mechanics of materials and materials-related
• Research Institution: Akita University
• Principal Investigator: ZHAO XU 秋田大学, 理工学研究科, 講師 (20650790)
• Co-Investigator(Kenkyū-buntansha): 山口 誠 秋田大学, 理工学研究科, 准教授 (90329863)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: ナノコイル / ナノファイバ / 形状制御 / 表面増強ラマン散乱

Outline of Final Research Achievements

This research succeeded in controlling the shape of Ag nanocoils based on our previously developed method of fabricating metallic nanocoils. We have solved the problem that shape control is difficult due to the complicated shape of 3D nanostructures and the fabrication process. In addition, by utilizing the shape effect and material effect, we applied Ag nanocoils to highly-flexible transparent heater and a surface-enhanced Raman scattering substrate. The effect of the shape on the mechanical, electrical, and optical properties of Ag nanocoils was clarified. Furthermore, we discovered a unique reduction mechanism for silver chloride and developed a novel method for rapidly fabricating Ag nanofibers with high aspect ratio.

Free Research Field

機械材料・材料力学

Academic Significance and Societal Importance of the Research Achievements

本研究は、独自開発した金属ナノコイルの創製方法に基づき、「ナノ」と「コイル」創製を両立したうえで、さらにコイルの形状制御をできた。金属ナノコイルの形状制御の基盤技術を確立し、ナノテクノロジーの研究に貢献した。また、銀ナノコイルの高伸縮性透明ヒーターおよび表面増強ラマン散乱基板への応用は、新たな機能性材料の創出および高感度物性分析法の開発に貢献した。