光活性化コロイドサーファーの生きた結晶
Jeremie Palacci1, Stefano Sacanna, Asher Preska Steinberg
1Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA. jp153@nyu.edu
Science (New York, N.Y.)
|February 2, 2013
まとめ
研究者は,光活性化合成粒子からダイナミックな"生きた結晶"を作成しました. これらの自己組織構造は,競合する推進力と光誘発の吸引力によって形成され,分解され,人工物質の非均衡物理を披露します.
科学分野:
- ソフトマター物理学 ソフトマター物理学
- 活性物質物理学 活性物質物理学
- コロイド科学 コロイド科学
背景:
- 自己組織化は,細菌のコロニーや鳥の群れで観察される,生物系の基本的な特性である.
- 合成システムにおける自己組織化の理解は,基本的な物理的原理と潜在的な応用に関する洞察を提供します.
研究 の 目的:
- 光活性化コロイド粒子を用いた合成システムにおける自己組織化を実証する.
- 2次元の"生きた結晶"の動的行動と形成メカニズムを調査する.
主な方法:
- 合成光活性化コロイド粒子のサスペンションを使用しています.
- 光の活性化によって自己組織化を誘導し,オスモティックおよびフォレティック効果につながります.
- 実験観察を定量的に記述するために数値シミュレーションを使用する.
主要な成果:
- 二次元の"生きた結晶"の自発的形成,動的組立,解消を観察した.
- 粒子の自己推進と光誘発の魅力相互作用の間の競争を特定しました.
- 正常から巨大な数値の変動への移行を測定した.
結論:
- これらの合成生体結晶のダイナミックな組み立ては,不均衡の力によって駆動されます.
- これらの構造の存在は,自己推進粒子による均衡外衝突と密接に関連しています.
- この研究は,人工活性物質における自己組織を研究するためのモデルシステムを提供しています.
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