Using epoxy-based lithography to probe confinement effects on active nematics

Using epoxy-based lithography to probe confinement effects on active nematics
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使用环氧基光刻来探测对活性向列相的限制效应

DOI:
10.1117/12.2528602
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发表时间:
2019
期刊:
Liquid Crystals XXIII
影响因子:
--
通讯作者:
Hirst, Linda S.
Hirst, Linda S.
中科院分区:
--
文献类型:
--
作者:
Khaladj, Dimitrius A.;Tan, Amanda J.;Hirst, Linda S.

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主动向列是由棒状亚单元组成的非平衡液晶流体,可以产生大规模的自驱动流动。在这一新兴的主动向列计算领域,需要新的方法来研究和潜在地控制相结构和动力学。利用表面曲率和拓扑缺陷之间的相互作用,利用微加工技术对复杂工程表面进行局部定向控制是一种很好的方法。基于环氧树脂的光刻代表了一种简单而有吸引力的方法,使用低成本,最少的材料和时间效率的过程。在本文中,我们讨论了使用负色调和正色调环氧树脂基光刻胶来创建活性物质微流体器件的优化制造方案的方法。弯曲物体阵列和淹没地形可以用来产生各种液晶缺陷构型,而不是在无约束平面表面上通常观察到的。
Active nematics are out-of-equilibrium liquid crystal fluids composed of rod-like subunits, which can generate large-scale, self-driven flows. In this emerging field of active nematics, new methods are needed to investigate and potentially control phase structure and dynamics. The use of complex engineered surfaces using microfabrication is an excellent way to control local orientation directors, taking advantage of the interplay between surface curvatures and topological defects. Epoxy-based lithography represents a simple and appealing approach, using low cost, minimal materials and a time efficient process. In this manuscript, we discuss methods for optimized fabrication protocols using negative and positive tone epoxy-based photoresists to create microfluidic devices for active matter. Arrays of curved objects and submerged topographies can be used to generate a variety of liquid crystal defect configurations not typically observed on unconfined planar surfaces.
DOI: 10.1073/pnas.1816733116
发表时间: 2019-03-12
影响因子: 11.1
作者:
Opathalage, Achini;Norton, Michael M.;Dogic, Zvonimir
通讯作者: Dogic, Zvonimir
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DOI: --
发表时间: 2017
期刊:
影响因子: --
作者:
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受限活性向列中的舞动向错。
DOI: --
发表时间: 2017
期刊: Soft Matter
影响因子: 3.4
作者:
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