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在聚光灯下的微游泳者:具有不同活动水平的代理之间的相互作用

Caroline Desgranges¹, Melissa Ferrari², Paul M Chaikin²

¹Department of Physics & Applied Physics, University of Massachusetts, Lowell, MA 01854, USA.

|September 20, 2023

概括

活性物质使用光模式自组装成复杂的结构. 这项研究揭示了控制活性体颗粒的可编程方法,使精确的不平衡组装能够超出传统策略.

科学领域:

物理物理学物理
材料科学材料科学材料科学
软物质物理学软物质物理学

背景情况:

活性物质表现出自我组装成动态的,不平衡的结构.
通过外部刺激控制这些结构对于高级应用至关重要.

研究的目的:

为了研究活性流体对空间光模式的反应.
开发可编程的方法,使用光激活的合体颗粒进行模板组装.

主要方法:

利用光激活的自行运动的体粒子进行模拟和实验.
检查了反向模板组件 (无颗粒区域) 和模板组件 (密集颗粒区域).
确定了组装和反组装特征时间的缩放关系.

主要成果:

量化了图案尺寸和活性流体特性之间的相互作用.
证明了大型星团的形成和动态.
展示了装配和反向装配可以创建复杂的模板.
通过光强度调制实现了局部包装分量的微调.

结论:

开发了用于光模式导向非平衡组件的协议.
这种方法提供了对活性物质结构的精确控制,超过了传统的热力学方法.
开辟了任意复杂和可编程活性物质设计的可能性.

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