コロイド結晶化による微細構造の粒子の一種
1Center for Molecular and Engineering Thermodynamics, Department of Chemical Engineering, University of Delaware, Newark, DE 19716, USA.
Science (New York, N.Y.)
|March 24, 2000
まとめ
研究者らは,ドロップレットテンプレートを用いて,安定した,光を散らす微細構造を作り出した. この方法では,高度な材料のアプリケーションのための粒子の形状と組成を正確に制御します.
科学分野:
- マテリアルサイエンス 材料科学
- コロイドと表面の化学
- ナノテクノロジー ナノテクノロジー
背景:
- コロイド結晶は粒子によって形成された秩序のある構造です.
- マイクロ構造物の形状と性質を制御することは,大変な課題です.
- テンプレート作成方法は,材料の組み立てを正確に制御することを可能にします.
研究 の 目的:
- マイクロ構造粒子を合成するための新しい方法を開発する.
- 粒子の大きさ,形,組成を制御するために.
- これらのマイクロストラクチャの可能性を様々なアプリケーションで探求する.
主な方法:
- フッ化油で懸浮した水滴のコロイド結晶の成長を通じて微細構造の粒子を合成する.
- 粒子をテンプレートとして利用し,高度に秩序付けられ,滑らかな粒子の組み立てを行います.
- 粒子のサイズと形 (球体,円体,多角形) を制御するために,ドロップレットの組成を変化させる.
- アニゾトロプ的有機-無機粒子のコロイド混合物における共結晶化を使用しています.
主要な成果:
- 光を散射する性質を持つ高度に秩序と滑らかな粒子の組成を達成した.
- 合成された微細構造の驚くべき構造的安定性を実証しました.
- 球体から elipsoids と toroids まで,粒子の形状を成功裏に制御しました.
- マグネティック・オリエンテーション・コントロールでアニゾトロピック粒子を作り出した.
結論:
- ドロップレットテンプレートメソッドは,様々な微細構造の制御可能な形成を可能にします.
- この技術は,調整可能な光学および物理的性質を持つ新しい材料への道を開きます.
- 合成されたマイクロ構造は,光学,フォトニクス,および高度な材料における潜在的な応用があります.
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