Laser-driven nematic flow in microfluidic devices

被引：0

作者：

Sliwa, Izabela ^{[1
]}

Maslennikov, Pavel, V ^{[2
]}

Shcherbinin, Dmitrii P. ^{[3
]}

Zakharov, Alex, V ^{[4
]}

机构：

[1] Poznan Univ Econ & Business, Al Niepodleglosci 10, PL-61875 Poznan, Poland

[2] Immanuel Kant Balt Fed Univ, Str Universitetskaya 2, Kaliningrad 236040, Russia

[3] ITMO Univ, Int Res & Educ Ctr Phys Nanostruct, Kronverksky Prospekt 49,Bldg, St Petersburg 197101, Russia

[4] Russian Acad Sci, St Petersburg Inst Machine Sci, St Petersburg 199178, Russia

来源：

PHYSICAL REVIEW E | 2024年 / 110卷 / 06期

关键词：

Based on a nonlinear extension of the Ericksen-Leslie theory; taking into account the entropy balance equation; a theoretical study of a thermally excited vortex flow in a microsized hybrid-aligned nematic (HAN) volume was carried out. Analysis of the numerical results show that due to interaction between the gradients of the director field ∇n and temperature ∇T; caused by the focused laser radiation; the thermally excited vortical fluid flow is maintained in the bulk of the HAN channel. Calculations have shown that the features of the vortex flow are influenced not only by the direction of the heat flux relative to the bounding surfaces; but also by the orientational defect on these surfaces. © 2024 American Physical Society;

D O I：

10.1103/PhysRevE.110.064702

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Based on a nonlinear extension of the Ericksen-Leslie theory, taking into account the entropy balance equation, a theoretical study of a thermally excited vortex flow in a microsized hybrid-aligned nematic (HAN) volume was carried out. Analysis of the numerical results show that due to interaction between the gradients of the director field del n and temperature del T , caused by the focused laser radiation, the thermally excited vortical fluid flow is maintained in the bulk of the HAN channel. Calculations have shown that the features of the vortex flow are influenced not only by the direction of the heat flux relative to the bounding surfaces, but also by the orientational defect on these surfaces.

引用

页数：7

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