Multistate Dynamic Pathways for Anisotropic Colloidal Assembly and Reconfiguration
Multistate Dynamic Pathways for Anisotropic Colloidal Assembly and Reconfiguration
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DOI：
10.1021/acsnano.3c07202
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发表时间：
2023-10-03
期刊：
影响因子：
17.1
通讯作者：
Bevan, Michael A.
中科院分区：
文献类型：
--
作者：
Hendley, Rachel S.;Zhang, Lechuan;Bevan, Michael A.
我们报告的控制界面组装和重新配置的矩形棱柱胶体颗粒之间的微结构的不同位置和取向顺序，包括稳定，亚稳态和瞬态。通过编程介导确定粒子位置、取向、压缩和链接的偶极相互作用的时间依赖性电场来实现结构多样的状态。我们确定了一个顺序参数集，定义每个状态的位置和取向顺序的组合。这些指标被用作反应坐标，以捕捉场变化时的初始和最终状态之间的微观结构演变。装配轨迹流形的状态之间的低维反应坐标空间揭示了一个动态的路径图，包括有关路径的可达性，可逆性和动力学的信息。通过导航的动态路径图，我们演示了状态之间的重新配置分钟的时间尺度，这是实际上有用的粒子为基础的材料加工和设备的响应。我们的研究结果展示了一个概念上的一般方法来发现动态的途径作为控制组装和重新配置的自组织积木，响应全球外部刺激的基础。
We report the controlled interfacial assembly and reconfiguration of rectangular prism colloidal particles between microstructures of varying positional and orientational order including stable, metastable, and transient states. Structurally diverse states are realized by programming time dependent electric fields that mediate dipolar interactions determining particle position, orientation, compression, and chaining. We identify an order parameter set that defines each state as a combination of the positional and orientational order. These metrics are employed as reaction coordinates to capture the microstructure evolution between initial and final states upon field changes. Assembly trajectory manifolds between states in the low-dimensional reaction coordinate space reveal a dynamic pathway map including information about pathway accessibility, reversibility, and kinetics. By navigating the dynamic pathway map, we demonstrate reconfiguration between states on minute time scales, which is practically useful for particle-based materials processing and device responses. Our findings demonstrate a conceptually general approach to discover dynamic pathways as a basis to control assembly and reconfiguration of self-organizing building blocks that respond to global external stimuli.