Solomon Michael J, Zeitoun Ramsey, Ortiz Daniel, Sung Kyung Eun, Deng Di, Shah Aayush, Burns Mark A, Glotzer Sharon C, Millunchick Joanna M
Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan, USA; Program in Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan, USA.
Macromol Rapid Commun. 2010 Jan 18;31(2):196-201. doi: 10.1002/marc.200900586. Epub 2009 Dec 29.
Particles combining multiple anisotropy dimensions offer possibilities for self-assembly that have not been extensively explored to date. The scope for assembly of microparticles in which the anisotropy dimensions of internal bond angle and chemical ordering have been varied is investigated. Colloidal assemblies with interesting open (i.e., non-close-packed) structures can be assembled from these building blocks. The structure of the assemblies formed is linked to the building block anisotropy because the steric constraints introduced induce deviations from close packing. Key challenges addressed in pursuit of these structures are parallelization of microfluidic synthesis methods, simulation to efficiently search the available anisotropy space, and methods that characterize the properties of the resulting assemblies. This combined program of synthesis, simulation, assembly, and characterization may be applied to develop design rules that guide efforts to fabricate microparticle building blocks and their assemblies.
结合多个各向异性维度的粒子为自组装提供了迄今尚未得到广泛探索的可能性。本文研究了内部键角和化学有序性等各向异性维度发生变化的微粒的组装范围。利用这些构建模块可以组装出具有有趣开放结构（即非密堆积结构）的胶体组件。所形成组件的结构与构建模块的各向异性相关，因为引入的空间位阻限制会导致偏离密堆积结构。在追求这些结构的过程中面临的关键挑战包括微流控合成方法的并行化、有效搜索可用各向异性空间的模拟以及表征所得组件性质的方法。这个合成、模拟、组装和表征相结合的程序可用于制定设计规则，以指导制造微粒构建模块及其组件的工作。
