Results 81 to 90 of about 12,892 (173)
The role of fluid flow in the dynamics of active nematic defects
New Journal of Physics, 2021 We adapt the Halperin–Mazenko formalism to analyze two-dimensional active nematics coupled to a generic fluid flow. The governing hydrodynamic equations lead to evolution laws for nematic topological defects and their corresponding density fields.
Luiza Angheluta +3 more
doaj +1 more source
Active colloids in liquid crystals
, 2015 Active colloids in liquid crystals (ACLCs) is an active matter with qualitatively new facets of behavior as compared to active matter that becomes isotropic when relaxed into an equilibrium state.
Lavrentovich, Oleg D.
core +1 more source
Dancing disclinations in confined active nematics [PDF]
Soft Matter, 2017 The spontaneous emergence of collective flows is a generic property of active fluids and often leads to chaotic flow patterns characterised by swirls, jets, and topological disclinations in their orientation field. However, the ability to achieve structured flows and ordered disclinations is of particular importance in the design and control of active ...
Tyler N. Shendruk +3 more
openaire +6 more sources
Dynamics of Ring Disclinations Driven by Active Nematic Shells
Frontiers in Physics, 2019 When dispersed in thermotropic nematic liquid crystal oils, surfactant-ladden aqueous droplets often lead to the formation of a equatorial ring disclination in the nearby nematic matrix as a result of a balance between elasticity and interfacial energy ...
Jérôme Hardoüin +8 more
doaj +1 more source
The low noise phase of a 2d active nematic
, 2017 We consider a collection of self-driven apolar particles on a substrate that organize into an active nematic phase at sufficiently high density or low noise.
Marchetti, M. Cristina +2 more
core +1 more source
Dynamic Current Routing in Conductive Liquid Crystal Elastomers for Complex Deformation Actuators
Advanced Materials Technologies, EarlyView.This work introduces a novel actuation control strategy in which electrical stimulation generates localized Joule heating in conductive liquid crystal elastomer (LCE) surfaces, enabling complex 3D deformations from a single homogeneous surface without preprogramming.
Gloria PouWai Lei +2 more
wiley +1 more source
Morphodynamics of active nematic fluid surfaces
Journal of Fluid Mechanics, 2023 Morphodynamic equations governing the behaviour of active nematic fluids on deformable curved surfaces are constructed in the large deformation limit. Emphasis is placed on the formulation of objective rates that account for normal deformations whilst ensuring that tangential flows are Eulerian, and the use of the surface derivative (rather than the ...
Sami C. Al-Izzi, Richard G. Morris
openaire +3 more sources
Antipolar ordering of topological defects in active liquid crystals [PDF]
, 2016 ATP-driven microtubule-kinesin bundles can self-assemble into two-dimensional active liquid crystals (ALCs) that exhibit a rich creation and annihilation dynamics of topological defects, reminiscent of particle-pair production processes in quantum ...
Dunkel, Jörn, Oza, Anand U.
core +2 more sources
Phototunable Polarization Volume Gratings Driven by Chiral Hydrazone Switches
Advanced Optical Materials, EarlyView.Chiral hydrazone photoswitches incorporated into polarization volume gratings enable light‐driven, reversible modulation of optical properties. UV and blue light irradiation reversibly alter the hydrazone isomer ratio, leading to tunable diffraction efficiency and spectral response across the visible spectrum.
Artem Boichuk +4 more
wiley +1 more source
Information Transmission Strategies for Self‐Organized Robotic Aggregation
Advanced Robotics Research, EarlyView.In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng +5 more
wiley +1 more source