視覚認識を有する活性ブラウン粒子における回転クラスターの出現
Radha Madhab Chandra1, Alan Biju John1, A V Anil Kumar1
1School of Physical Sciences, National Institute of Science Education and Research, Jatni, Bhubaneswar 752050, India, and Homi Bhabha National Institute, Anushakthi Nagar, Mumbai, India.
The Journal of chemical physics
|December 17, 2025
まとめ
視覚認識を有する活性粒子は、中間的な範囲で回転クラスターを形成する。それらの持続的な運動は構造形成と相関し、クラスターにおける確率の減衰と振動的挙動を示す。
科学分野:
- 複雑系
- 統計物理学
- 活性物質物理学
背景:
- 活性粒子、すなわち自己駆動型実体は、複雑な集団的挙動を示す。
- 集団形成とダイナミクスの理解は、活性物質系にとって極めて重要である。
- 視覚認識は、粒子間相互作用と創発的な構造に影響を与える可能性がある。
研究 の 目的:
- 視覚認識を有する活性粒子の集団形成とダイナミクスを調査すること。
- 持続的な運動と創発的な構造との相関を分析すること。
- これらの粒子によって形成される回転クラスターの挙動を特徴づけること。
主な方法:
- ランジュバン動力学シミュレーションを用いて粒子挙動をモデル化した。
- ビジョンコーン内の最近傍粒子位置に基づいて配向応答を組み込んだ。
- 持続確率と配向相関関数を分析した。
主要な成果:
- 視覚認識範囲が中間的な場合に回転クラスターの出現を観察した。
- 持続的な運動と創発的な構造との間に強い相関が見られた。
- 回転クラスターは、急速に減衰する持続確率と振動的な配向相関を示した。
結論:
- 活性粒子における視覚認識は、動的な回転クラスターの形成につながる可能性がある。
- 粒子の持続性と視覚的合図の間の相互作用が、創発的な集団的挙動を決定する。
- 観察されたダイナミクスは、活性物質における自己組織化メカニズムに関する洞察を提供する。
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