カーボンナノチューブメカニカルレゾナーで輸送を充電するためのカップリングメカニズム

Benjamin Lassagne¹, Yury Tarakanov, Jari Kinaret

¹Centre d'Investigació en Nanociència i Nanotecnologia (Consejo Superior de Investigaciones Científicas-Institut Català de Nanotecnologia), campus Universitat Autònoma de Barcelona, E-08193 Barcelona, Spain.

Science (New York, N.Y.)

|July 25, 2009

まとめ

研究者は,単一壁の炭素ナノチューブを使用して,ナノ電気機械的共振器を研究しました. 彼らは,力学的運動と電荷輸送の間の強い,調整可能なカップリングを発見し,非線形振動を可能にしました.

科学分野:

物理物理学物理学とは
マテリアルサイエンス材料科学
ナノテクノロジーナノテクノロジー

背景:

ナノ電機共振器は,センサー,冷却,信号処理に不可欠です.
共振器の運動と電荷輸送の間の結合強度は,重要なパラメータです.

研究の目的:

シングルウォールカーボンナノチューブ (SWCNT) の懸浮の機械的な振動を調査し,単電子トランジスタとして動作します.
装置における機械的自由度と電荷自由度との結合を特徴づける.

主な方法:

吊り下げられた単一壁の炭素ナノチューブを機械的共鳴器として利用しました.
ナノチューブを単電子トランジスタとして操作し,電荷輸送を調査した.
機械的な振動と電子特性との結合を分析した.

主要な成果:

ナノチューブの機械的振動と電荷輸送の間の非常に強い結合が観察されました.
このカップリングは幅広く調節可能であり,約3 x 10^6 Hzの減圧率を示しています.
カップリングが非線形振動を誘導するのに十分な強さがあることが判明しました.

結論:

SWCNTデバイスの強固で調節可能な電機結合は,高度なアプリケーションのための新しい道を開きます.
このシステムは,ナノメカニカルシステムにおける非線形動力学の探索のためのプラットフォームを提供します.
潜在的なアプリケーションには,高感度センサーと新しい信号処理装置が含まれます.

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