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Compared to isotropic liquids, orientational order of nematic liquid crystals makes their rheological properties more involved, and thus requires fine control of the flow parameters to govern the orientational patterns. In microfluidic…

软凝聚态物质 · 物理学 2020-01-03 Simon Čopar , Žiga Kos , Tadej Emeršič , Uroš Tkalec

Antiferromagnets with vanishingly small (or zero) magnetization are interesting candidates for spintronics applications. In the present paper we propose two models for description of the current-induced phenomena in antiferromagnetic…

介观与纳米尺度物理 · 物理学 2013-06-03 Helen Gomonay , Vadim Loktev

We study DC and AC electrophoresis of silica micro and nanorods in a thin film of a nematic liquid crystal. These particles induce virtual topological defects and also demonstrate nontrivial electrophoresis in a nematic liquid crystal. We…

软凝聚态物质 · 物理学 2022-04-26 Muhammed Rasi M , Archana S , Ravi Kumar Pujala , Surajit Dhara

In the framework of a field theoretical approach we study Maier-Saupe nematogenic fluid in contact with a hard wall. The pair interaction potential of the considered model consists of an isotropic and an anisotropic Yukawa terms. In the…

软凝聚态物质 · 物理学 2013-03-25 M. Holovko , I. Kravtsiv , D. di Caprio

Inspired by recent experiments that highlight the role of nematic defects in the morphogenesis of epithelial tissues, we develop a minimal framework to study the dynamics of an active curved surface driven by its nematic texture. Allowing…

软凝聚态物质 · 物理学 2022-09-14 Farzan Vafa , L. Mahadevan

Linear defects such as dislocations and disclinations in ordered materials attract foreign particles since they replace strong elastic distortions at the defect cores. In this work, we explore the behavior of isotropic droplets nucleating…

We develop the theory describing the quantum coupled dynamics of the center-of-mass motion of a nanoparticle and an ensemble of ions co-trapped in a dual-frequency linear Paul trap. We first derive analytical expressions for the motional…

Kinetic aspects of the ion current layer at the center of a reconnection outflow exhaust near the X-type region are investigated by a two-dimensional particle-in-cell (PIC) simulation. The layer consists of magnetized electrons and…

太阳与恒星天体物理 · 物理学 2014-11-06 Seiji Zenitani , Iku Shinohara , Tsugunobu Nagai , Tomohide Wada

We calculate the interaction between two spherical colloidal particles embedded in the isotropic phase of a nematogenic liquid. The surface of the particles induces wetting nematic coronas that mediate an elastic interaction. In the weak…

软凝聚态物质 · 物理学 2009-11-07 P. Galatola , J. -B. Fournier

An intermediate nematic phase is proposed for the interpretation of recent experimental results on phase biaxiality in bent-core nematics. The phase is macroscopically uniaxial but consists of microscopic biaxial, and possibly polar,…

软凝聚态物质 · 物理学 2009-04-28 Alexandros G. Vanakaras , Demetri J. Photinos

Anisotropic fluids appear in a diverse array of systems, from liquid-crystal displays to bacterial swarms, and are characterized by orientational order. Large colloidal particles immersed in such environments disturb the medium's…

软凝聚态物质 · 物理学 2025-01-03 Thomas G. J. Chandler , Saverio E. Spagnolie

We present a Monte Carlo study of external surface anchoring in nematic cells with partially disordered solid substrates, as well as of intrinsic anchoring at free nematic interfaces. The simulations are based on the simple hexagonal…

软凝聚态物质 · 物理学 2009-11-07 N. V. Priezjev , G. Skacej , R. A. Pelcovits , S. Zumer

We describe an approach based on non-equilibrium molecular dynamics (NEMD) simulations to calculate the ionic mobility of solid ion conductors such as solid electrolytes from first-principles. The calculations are carried out in finite…

材料科学 · 物理学 2022-09-23 Alexandra Carvalho , Suchit Negi , Antonio Helio Castro Neto

We theoretically investigate the threshold for the director reorientation from the homeotropic state to the hybrid homeotropic-planar state and vice versa in a cell filled with a flexoelectric nematic liquid crystal (NLC) subjected to an…

软凝聚态物质 · 物理学 2021-03-30 O. S. Tarnavskyy , M. F. Ledney

Ionic transport within charged nanopores is commonly represented by resistor-capacitor transmission line circuits, where charging electrical double layers are modeled as capacitors, and the resistance to ionic current is modeled as…

化学物理 · 物理学 2025-05-19 Filipe Henrique , Ankur Gupta

Multielectron tunneling ionization creates ionic coherence crucial for lasing and driving electron motion in molecules. While tunneling is well understood as a single active electron process, less emphasis has been placed on theoretical…

量子物理 · 物理学 2026-04-23 Chi-Hong Yuen

Recent reports of surface forces across nanoconfined ionic liquids have revealed the existence of an anomalously long-ranged interaction apparently of electrostatic origin. Ionic liquids are viscous and therefore it is important to inspect…

软凝聚态物质 · 物理学 2018-01-04 Romain Lhermerout , Susan Perkin

The notion of decoupling of spin and charge currents is one of the basic principles underlying the rapidly expanding feld of Spintronics. However, no direct demonstration of the phenomenon exists. We report a novel measurement, in which a…

介观与纳米尺度物理 · 物理学 2015-06-25 M. Urech , V. Korenivski , N. Poli , D. B. Haviland

In active nematic liquid crystals activity is able to drive chaotic spatiotemporal flows referred to as active turbulence. Active turbulence has been characterized through theoretical and experimental work as a low Reynolds number…

软凝聚态物质 · 物理学 2022-11-30 C. Rorai , F. Toschi , I. Pagonabarraga

The aim of this paper is to propose a new numerical model to simulate 2D vesicles interacting with a newtonian fluid. The inextensible membrane is modeled by a chain of circular rigid particles which are maintained in cohesion by using two…

数学物理 · 物理学 2012-02-15 Mourad Ismail , Aline Lefebvre-Lepot