コアシェルナノ構造を利用した応力誘導による 超微細ナノ ......core-shell...

200

2017年3月13日 受理* 豊田理研スカラー 名古屋大学大学院工学研究科機械理工学専攻

コアシェルナノ構造を利用した応力誘導による超微細ナノウィスカーの創製に関する研究

Here we propose a method based on stress-induced atomic migration to fabricate tiny whiskers on core-shell nanowires. This technique utilizes the thermal stress which is induced by the mismatch of thermal expansions in core-shell nanostructures. A material with a low thermal expansion coefficient was coated on the core nanowires which have a high thermal expansion coefficient. During the heat treatment of core-shell nanowires, the core material expanded more than the shell material. Therefore, a compressive stress was induced in the core material and leads to atomic migration in core material. As a result, atoms transited through the weak sports of the shell material and formed tiny whiskers on the surface of core-shell nanowires.

コアシェルナノ構造を利用した応力誘導による 超微細ナノウィスカーの創製に関する研究

*徳　　　悠　葵*

Fabrication of Tiny Whiskers on Core Shell Nanostructure by Stress Migration

*Yuhki TOKU*

200

2017年3月13日 受理* 豊田理研スカラー 名古屋大学大学院工学研究科機械理工学専攻

コアシェルナノ構造を利用した応力誘導による超微細ナノウィスカーの創製に関する研究

Here we propose a method based on stress-induced atomic migration to fabricate tiny whiskers on core-shell nanowires. This technique utilizes the thermal stress which is induced by the mismatch of thermal expansions in core-shell nanostructures. A material with a low thermal expansion coefficient was coated on the core nanowires which have a high thermal expansion coefficient. During the heat treatment of core-shell nanowires, the core material expanded more than the shell material. Therefore, a compressive stress was induced in the core material and leads to atomic migration in core material. As a result, atoms transited through the weak sports of the shell material and formed tiny whiskers on the surface of core-shell nanowires.

コアシェルナノ構造を利用した応力誘導による 超微細ナノウィスカーの創製に関する研究

*徳　　　悠　葵*

Fabrication of Tiny Whiskers on Core Shell Nanostructure by Stress Migration

*Yuhki TOKU*

201コアシェルナノ構造を利用した応力誘導による超微細ナノウィスカーの創製に関する研究

REFERENCES