Results 111 to 120 of about 2,992 (173)

Chirality, anisotropic viscosity and elastic anisotropy in three-dimensional active nematic turbulence

Communications Physics
Various active materials exhibit strong spatio-temporal variability of their orientational order known as active turbulence, characterised by irregular and chaotic motion of topological defects, including colloidal suspensions, biofilaments, and ...
Nika Kralj, Miha Ravnik, Žiga Kos
doaj   +1 more source

Variational formulation of active nematic fluids: theory and simulation

New Journal of Physics
The structure and dynamics of important biological quasi-two-dimensional systems, ranging from cytoskeletal gels to tissues, are controlled by nematic order, flow, defects and activity.
W Mirza, A Torres-Sánchez, G Vilanova, Marino Arroyo   +3 more
doaj   +1 more source

Three-dimensional spontaneous flow transition in a homeotropic active nematic

Communications Physics
Active nematics are driven, non-equilibrium systems relevant to biological processes including tissue mechanics and morphogenesis, and to active metamaterials in general.
Vincenzo J. Pratley, Enej Caf, Miha Ravnik, Gareth P. Alexander   +3 more
doaj   +1 more source

Active nematic-isotropic interfaces on flat surfaces: Effects of anchoring, ordering field and activity

Giant
A surface in contact with the isotropic phase of a passive liquid crystal can induce nematic order over distances that range from microscopic to macroscopic when the nematic-isotropic interface undergoes an orientational-wetting transition.
Rodrigo C.V. Coelho, José A. Moreira, Duarte M.C. Pedro, Margarida M. Telo da Gama   +3 more
doaj   +1 more source

Machine learning topological defects in confluent tissues

Biophysical Reports
Active nematics is an emerging paradigm for characterizing biological systems. One aspect of particularly intense focus is the role active nematic defects play in these systems, as they have been found to mediate a growing number of biological processes.
Andrew Killeen, Thibault Bertrand, Chiu Fan Lee   +2 more
doaj   +1 more source

Topological structure and dynamics of three-dimensional active nematics. [PDF]

Science, 2020
Duclos G, Adkins R, Adkins R, Banerjee D, Peterson MSE, Varghese M, Kolvin I, Baskaran A, Pelcovits RA, Powers TR, Baskaran A, Toschi F, Hagan MF, Streichan SJ, Vitelli V, Beller DA, Dogic Z.   +16 more
europepmc   +1 more source

Control of active nematics

, 2021
Active matter describes systems, such as bacterial suspensions, cellular tissue or cytoskeleton biopolymers, that extract energy from their surroundings at the single-particle level and convert it into mechanical work. The resulting active work can be manifested in the form of self-propulsion and stress generation. The continuous injection of energy or
openaire   +1 more source

Statistical properties of autonomous flows in 2D active nematics. [PDF]

Soft Matter, 2019
Lemma LM, DeCamp SJ, You Z, Giomi L, Dogic Z.   +4 more
europepmc   +1 more source

Majorana quasiparticles and topological phases in 3D active nematics. [PDF]

Proc Natl Acad Sci U S A
Head LC, Negro G, Carenza LN, Johnson N, Keogh RR, Gonnella G, Morozov A, Orlandini E, Shendruk TN, Tiribocchi A, Marenduzzo D.   +10 more
europepmc   +1 more source