モーターとロータを1つに:調節可能なモーションモードの光活性ZnO/Au双棒

Sinan Du^1,2, Huaguang Wang², Chao Zhou³

¹Center for Soft Condensed Matter Physics and Interdisciplinary Research , Soochow University , Suzhou 215006 , China.

Journal of the American Chemical Society

|January 21, 2020

まとめ

研究者らは,新しい亜鉛酸化物/金 (ZnO/Au) マイクロマシンを開発し,複数の運動モードを実現しました. このマイクロロボットは制御可能な転移と回転を備えており先進的な応用の道を開いています

科学分野:

材料科学
ナノテクノロジー
化学工学

背景:

ミクロマシンの動きを精密に制御することが機能に不可欠です
現在のマイクロマシンは通常,1つの運動モード (トランスレーションまたは回転) のみを示します.
単一のマイクロマシンの設計から複数の制御可能な動作モードを達成することは大きな課題です.

研究の目的:

新しい光化学的マイクロマシンを設計・合成する
これらのマイクロマシーンが複数の動きを示す能力を調べるためだ
異なるモーションモードを切り替えるための制御メカニズムを探求する.

主な方法:

亜鉛酸化物/金 (ZnO/Au) ナノ棒の合成
均質な紫外線を駆動源として利用する.
燃料濃度と光の強さを変化させ動きに影響を与える
照明の角度を調整して動作モードを切り替える

主要な成果:

ZnO/Au棒は紫外線照射下で複数の運動モードを示した.
弾道運動から継続的な回転運動への移行は,燃料濃度または光の強度が増加したときに観察されました.
運動モードは,円形から螺旋形に,そして直線運動に,光のインシデンス角度を調整することによって切り替えることができます.

結論:

開発されたZnO/Au棒は制御可能なマルチモデルの動きを提供します.
光化学的アクチュエーションは,マイクロマシンのダイナミクスを制御するための汎用的な方法を提供します.
この発見は微小ロボットによる洗練された操作を必要とする多様な応用に期待を寄せています

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