Electrically powered motions of toron crystallites in chiral liquid crystals
Electrically powered motions of toron crystallites in chiral liquid crystals
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手性液晶中托伦微晶的电动运动
DOI:
10.1073/pnas.1922198117
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Smalyukh, Ivan I.
中科院分区:
文献类型:
--
作者:
Sohn, Hayley R. O.;Smalyukh, Ivan I.
Malleability of metals is an example of how the dynamics of defects like dislocations induced by external stresses alters material properties and enables technological applications. However, these defects move merely to comply with the mechanical forces applied on macroscopic scales, whereas the molecular and atomic building blocks behave like rigid particles. Here, we demonstrate how motions of crystallites and the defects between them can arise within the soft matter medium in an oscillating electric field applied to a chiral liquid crystal with polycrystalline quasi-hexagonal arrangements of self-assembled topological solitons called “torons.” Periodic oscillations of electric field applied perpendicular to the plane of hexagonal lattices prompt repetitive shear-like deformations of the solitons, which synchronize the electrically powered self-shearing directions. The temporal evolution of deformations upon turning voltage on and off is not invariant upon reversal of time, prompting lateral translations of the crystallites of torons within quasi-hexagonal periodically deformed lattices. We probe how these motions depend on voltage and frequency of oscillating field applied in an experimental geometry resembling that of liquid crystal displays. We study the interrelations between synchronized deformations of the soft solitonic particles and their arrays, and the ensuing dynamics and giant number fluctuations mediated by motions of crystallites, five–seven defects pairs, and grain boundaries in the orderly organizations of solitons. We discuss how our findings may lead to technological and fundamental science applications of dynamic self-assemblies of topologically protected but highly deformable particle-like solitons.
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影响因子:
8.6
作者:
Qiaoxuan Zhang;Paul J. Ackerman;Qingkun Liu;I. Smalyukh
通讯作者:
I. Smalyukh
影响因子:
3.7
作者:
Leonov, A. O.;Inoue, K.
通讯作者:
Inoue, K.
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
M. Marchetti;Y. Fily;S. Henkes;Adam Patch;D. Yllanes
通讯作者:
D. Yllanes
影响因子:
13.6
作者:
Wild J;Meier TNG;Pöllath S;Kronseder M;Bauer A;Chacon A;Halder M;Schowalter M;Rosenauer A;Zweck J;Müller J;Rosch A;Pfleiderer C;Back CH
通讯作者:
Back CH
DOI:
10.1073/pnas.1601235113
发表时间:
2016-09-20
影响因子:
11.1
作者:
Liu, Qingkun;Ackerman, Paul J.;Smalyukh, Ivan I.
通讯作者:
Smalyukh, Ivan I.