液体の固体への接着と接着
Stijn F L Mertens1,2, Adrian Hemmi3, Stefan Muff3
1Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium.
Nature
|July 1, 2016
まとめ
研究者は六角性酸塩とロジウムの液滴における粘着と粘着を調査した. 電気化学的潜在力を使って これらの力を逆転させることができ 微小デバイスの設計に 洞察を与えてくれるのです
科学分野:
- 材料科学
- 表面科学
- トリボロジー
背景:
- 粘着と粘着は移動とマイクロデバイスの機能に不可欠です.
- 粘着,粘着,滑り摩擦の関係を理解することは,しばしば経験的である.
- よりよい理解により,マイクロおよびナノ電気機械システム (MEMS/NEMS) の設計を進めることができます.
研究 の 目的:
- 固体と液体の接点における粘着の関係を調査する.
- 粘着と粘着を制御するための新しい切り替え可能な表面システムを探索する.
- 粘着と摩擦のメカニズムをより深く理解するために
主な方法:
- ダイナミックな接触角度測定 ロジウム上の六角形のボロン・ニトリド (h-BN) モノレイヤ.
- 2つの異なるインターフェース状態を研究する:波紋 (水素インターケレーションなし) と平ら (インターケレーション誘発).
- 電気化学的ポテンシャルを使用して,水素のインターケレーションと表面状態を逆転的に制御します.
主要な成果:
- 水素インターケラを制御することによって,粘着と粘着の可逆的な切り替えを証明した.
- 表面の粗さではなく,二極環の横の電場の変化に起因する粘着の変化を観察した.
- h-BN/Rhシステムは高い安定性と切り替え可能な表面特性を表しています.
結論:
- h-BN/Rhインターフェイスでの粘着と粘着は,水素インターケレーションの電気化学的制御によって切り替えられます.
- 観察された粘着の変化は,電場変動と関連しており,ウェンゼルモデルを超えたメカニズムを提供します.
- この安定した,切り替え可能な表面システムは,粘着,摩擦,および潤滑の研究で潜在的な応用があります.
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