弾性コロイドモノポールと,液晶で再構成可能な自己組み立て
Ye Yuan1, Qingkun Liu1, Bohdan Senyuk1
1Department of Physics, University of Colorado, Boulder, CO, USA.
Nature
|May 31, 2019
まとめ
研究者は新しいネマティックコロイドを 交換可能な弾性モノポールで開発した. これらの粒子は光を用いて再構成され 静電学では見られない 独特の魅力的・排斥的振る舞いを示し 活性物質システムへの道を切り開きます
科学分野:
- コロイド科学
- 柔らかい物質の物理
- 液晶システム
背景:
- モノポルのような静電相互作用は一般的ですが,しばしばスクリーニングされ,切り替えない.
- コロイド粒子は通常,表面電荷のサインや多極の順番を変えることはできません.
- 液晶コロイドの弾性相互作用は静電的多極を模倣するが,単極は不安定である.
研究 の 目的:
- 安定した,切り替え可能な弾性モノポールモメントを持つネマティックコロイドを設計する.
- これらの新しいコロイド粒子の再構成と相互作用のダイナミクスを調査する.
- 活性物質と自己組み立てにおける潜在的な応用を探求する.
主な方法:
- バランスのとれた光学および弾性トルクを持つネマティックコロイドの開発.
- 構造化されていない光を用いた光による単極から四極への再構成の実証.
- 調節可能な弾性モノポールのサインと相互作用の観察とモデリング.
主要な成果:
- ネマティック・コロイドで安定した弾性モノポールを達成し,固有の不安定性を克服した.
- 光による再構成を証明した. 原子状態の移行に似ています.
- 観測された独特の相互作用:同じ電荷のモノポルは引き寄せ,反対の電荷のモノポルは反発する.
- コロイド粒子によって動的組成が 動的組成が 動的組成が
結論:
- 光学トルクと弾性トルクのバランスは,興奮状態の弾性モノポルを安定させる.
- これらのコロイドは制御可能な非静電的な相互作用とダイナミックな組み立てを示します.
- 光を駆動する活性物質と自己組み立てナノマシンの開発の可能性
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