原子スケールの精度で作られた毛細血管を通じた分子輸送
B Radha1, A Esfandiar1, F C Wang2
1School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK.
Nature
|September 8, 2016
まとめ
ヴァン・デル・ワールスのアセンブリを用いて 原子的に正確なナノチャネルを製造した. このスムーズで狭い毛細血管は 超高速な水の輸送を可能にし ナノ流体学や材料科学に 新たな可能性をもたらします
科学分野:
- 材料科学
- ナノテクノロジー
- 物理化学
背景:
- ナノスケールの毛細血管は 自然と技術において 極めて重要です
- 正確な寸法を持つ人工ナノ毛細血管の製造は,表面の粗さのために困難です.
- ナノ流体の研究は新しい製造能力で前進しています
研究 の 目的:
- 狭くて滑らかなナノ毛細血管を 原子スケールの精度で作る方法を開発する
- 精密に制御されたナノチャネルで 水を運ぶ性質を調査する
- 調節可能なナノ構造を作り出すための ヴァン・ダー・ワールスのアセンブリの可能性を探求する.
主な方法:
- ヴァン・デル・ワールスのアセンブリを用いて,原子的に平らなシート (グラフェン) と2次元結晶を分隔器として使用する.
- 分離器の層数を正確に制御して チャンネルの高さを原子精度で定義します
- 1から数ダースの原子レベルまでの高さのチャネルを介して水の輸送を特徴づける.
主要な成果:
- 円滑な毛細血管の製造が達成され, 精度が制御されました.
- 高圧の毛細血管と大きな滑り距離による予想外高速の水流 (最大1m/s) を観測した.
- ナノ限られた水の構造的な秩序の増加に関連した,少数の水層を収容するチャネルでの増加した流れを観察した.
結論:
- バン・ダー・ワールスのアセンブリは 調節可能な寸法と制御された性質を持つナノ毛細血管を作る強力な経路を提供します
- 製造された構造は,ナノ限られた環境における分子輸送の基本的な研究のためのプラットフォームを提供します.
- この技術は,ナノ流体やそれ以上のための新しいデバイスの設計を可能にし,幅広い原子的に平坦な材料を使用します.
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