论文标题

弹性偶极子,四极,八翼和十六进制剂在列乳液中由表面活性剂自组装驱动

Transformation between elastic dipoles, quadrupoles, octupoles and hexadecapoles driven by surfactant self-assembly in nematic emulsion

论文作者

Senyuk, Bohdan, Mozaffari, Ali, Crust, Kevin, Zhang, Rui, de Pablo, Juan J., Smalyukh, Ivan I.

论文摘要

从生物调整到智能窗口,均具有列宿主内的各向同性流体滴的乳液,这些乳液依赖于响应化学,热,电和其他刺激的液滴周围分子比对结构的变化。我们表明,吸收或解吸痕量的常见表面活性剂可以驱动由均匀比对的列型宿主内的液滴引起的弹性多孔的连续转换。导演结构的不平衡动力学来自受控的自组装或在滴螺旋界面上不同表面活性剂的解吸,随后在弹性偶极子,四翼舰,八翼杆菌,八翼和六杆菌之间进行了向前和反向转换。我们表征了液滴诱导的表面和散装缺陷,探测弹性对相互作用的转变,并讨论了基本科学的新兴前景以及可重新配置的nematic乳液的应用。

Emulsions comprising isotropic fluid drops within a nematic host are of interest for applications ranging from biodetection to smart windows, which rely on changes of molecular alignment structures around the drops in response to chemical, thermal, electric and other stimuli. We show that absorption or desorption of trace amounts of common surfactants can drive continuous transformations of elastic multipoles induced by the droplets within the uniformly aligned nematic host. Out-of-equilibrium dynamics of director structures emerge from a controlled self-assembly or desorption of different surfactants at the drop-nematic interfaces, with ensuing forward and reverse transformations between elastic dipoles, quadrupoles, octupoles and hexadecapoles. We characterize inter-transformations of droplet-induced surface and bulk defects, probe elastic pair interactions and discuss emergent prospects for fundamental science and applications of the reconfigurable nematic emulsions.

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