Results 61 to 70 of about 3,171,010 (214)
Collective motion in active nematic liquid crystals [PDF]
, 2021 Active matter is based on understanding the physical mechanisms that give rise to large scale flows in aggregates of self-propelling particles. If the particles have a head-tail, or nematic, symmetry, then their structure resembles that of a passive ...
Hughes, Rian
core +1 more source
Spontaneous topological charging of tactoids in a living nematic
New Journal of Physics, 2018 Living nematic is a realization of an active matter combining a nematic liquid crystal with swimming bacteria. The material exhibits a remarkable tendency towards spatio-temporal self-organization manifested in formation of dynamic textures of self ...
Mikhail M Genkin +2 more
doaj +1 more source
Fingering Instability of Active Nematic Droplets [PDF]
, 2022 From the mitotic spindle up to tissues and biofilms, many biological systems behave as active droplets, which often break symmetry and change shape spontaneously. Here, I show that active nematic droplets can experience a fingering instability.
Alert, Ricard, Alert, R.
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Active morphogenesis of patterned epithelial shells
eLife, 2023 Shape transformations of epithelial tissues in three dimensions, which are crucial for embryonic development or in vitro organoid growth, can result from active forces generated within the cytoskeleton of the epithelial cells.
Diana Khoromskaia, Guillaume Salbreux
doaj +1 more source
Photonics, 2023 A chiral nematic is embedded between multilayer mirrors to obtain voltage-inducible polarized resonance spectra. Initially, the nematic director is uniformly oriented perpendicular to the mirrors’ surfaces because the chiral nematic helix is completely ...
Vladimir A. Gunyakov +4 more
doaj +1 more source
Nanoconfinement‐Induced Second‐Harmonic Circular Dichroism via Chirality–Ferroelectric Coupling
Advanced Functional Materials, EarlyView.Nanoconfinement of a ferroelectric nematic liquid crystal within a chiral nanoporous sponge yields an enhanced second‐harmonic generation circular dichroism (|gSHG–CD| ≈ 1.1). Polarization‐resolved analysis suggests an additional magnetic‐dipole‐associated nonlinear contribution under nanoconfinement, highlighting chirality–ferroelectric coupling as a ...
Jae‐Jin Lee +5 more
wiley +1 more source
Investigation of flexoelectricity and ionic contamination in nematic liquid crystals [PDF]
, 2009 The work presented is a study of nematic liquid crystal physical properties. One of the phenomenon investigated is the bistability or in other words, the ability of the director of the material to rest in different orientations as function of the ...
Trabi, Christophe Lionel, Trabi, CL
core
Advanced Functional Materials, EarlyView.Inspired by skeletal muscles’ precision and endurance, CoilLCE integrates a self‐sensing liquid crystal elastomer/graphene artificial muscle with an embedded Joule‐heating copper coil, enabling closed‐loop multistage actuation with programmable intermediate states (strain accuracy of 2%), and antagonistic coordination (32% total strain). These features
Ziyun Zhang +9 more
wiley +1 more source
Defect Annihilation and Proliferation in Active Nematics
Physical Review Letters, 2013 5 pages, 4 ...
Giomi, Luca +3 more
openaire +4 more sources
Activity gradients in two- and three-dimensional active nematics
Soft Matter, 2022 We numerically investigate how spatial variations of extensile or contractile active stress affect bulk active nematic systems in two and three dimensions.
Ruske, LJ, Yeomans, JM
openaire +3 more sources