Thermofluidic assembly of colloidal crystals

IF 4.1 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Frontiers in Nanotechnology Pub Date : 2023-03-13 DOI:10.3389/fnano.2023.1135408
D. Quinn, F. Cichos
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引用次数: 1

Abstract

Colloidal crystals are interesting as functional structures due to their emergent photonic properties like photonic stop bands and bandgaps that can be used to redirect light. They are commonly formed by a drying process that is assisted by capillary forces at the drying fronts. In this manuscript, we demonstrate the optically induced dynamic thermofluidic assembly of 2D and 3D colloidal crystals. We quantify in experiment and simulation the structure formation and identify thermo-osmosis and temperature induced depletion interactions as the key contributors to the colloidal crystal formation. The non-equilibrium nature of the assembly of colloidal crystals and its dynamic control by laser-induced local heating promise new possibilities for a versatile formation of photonic structures inaccessible by equilibrium processes.
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胶体晶体的热流体组装
胶体晶体作为功能结构很有趣,因为它们具有出射光子特性,如可用于重定向光的光子阻带和带隙。它们通常是由干燥过程形成的,干燥过程由干燥前沿的毛细管力辅助。在这份手稿中,我们展示了二维和三维胶体晶体的光学诱导动态热流体组装。我们在实验和模拟中量化了结构的形成,并确定热渗透和温度诱导的耗尽相互作用是胶体晶体形成的关键因素。胶体晶体组装的非平衡性质及其通过激光诱导的局部加热进行的动态控制为平衡过程无法实现的光子结构的多功能形成提供了新的可能性。
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来源期刊
Frontiers in Nanotechnology
Frontiers in Nanotechnology Engineering-Electrical and Electronic Engineering
CiteScore
7.10
自引率
0.00%
发文量
96
审稿时长
13 weeks
期刊最新文献
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