Results 141 to 150 of about 4,761,499 (204)

Learning active nematics one step at a time. [PDF]

Proc Natl Acad Sci U S A, 2021
Frishman A, Keren K.
europepmc   +1 more source

More is Less in Unpercolated Active Solids

Physical Review X
A remarkable feat of active matter physics is that systems as diverse as collections of self-propelled particles, nematics mixed with molecular motors, and interacting robots can all be described by symmetry-based continuum theories.
Jack Binysh, Guido Baardink, Jonas Veenstra, Corentin Coulais, Anton Souslov   +4 more
doaj   +1 more source

Topological structure and dynamics of three-dimensional active nematics

, 2020
Topological structures are effective descriptors of the nonequilibrium dynamics of diverse many-body systems. For example, motile, point-like topological defects capture the salient features of two-dimensional active liquid crystals composed of energy ...
Fluids and Flows, Hagan, Michael F., Kolvin, Itamar, Brandeis University, Banerjee, Debarghya, Baskaran, Arvind, Dogic, Zvonimir, Computational Multiscale Transport Phenomena (Toschi), Toschi, Federico; id_orcid, Adkins, Raymond, Beller, Daniel, Vitelli, Vincenzo, Brown University, Powers, Thomas R., Pelcovits, Robert A., Varghese, Minu, Max Planck Institute for Dynamics and Self-Organization, Streichan, Sebastian J., Baskaran, Aparna, Duclos, Guillaume, University of California at Santa Barbara, University of California Merced, Peterson, Matthew S.E., University of Illinois Chicago   +23 more
core   +1 more source

Steady states of sheared active nematics

, 2014
A continuum hydrodynamic model has been used to characterize flowing active nematics. The behavior of such a system subjected to a weak steady shear is analyzed.
Su, Jianbing, Zeng, Xiaoming, Cui, Zhenlu   +2 more
core   +1 more source

Photosynthetically-powered phototactic active nematic liquid crystal fluids and gels

Communications Materials
One of the most ancient forms of life dating to ~3.5 billion years ago, cyanobacteria are highly abundant organisms that convert light into energy and motion, often within conjoined filaments and larger colonies that attract a great deal of interest but ...
Andrii Repula, Colin Gates, Jeffrey C. Cameron, Ivan I. Smalyukh   +3 more
doaj   +1 more source

Effects of anchoring boundary conditions on active nematics

, 2017
Background: Extensive theoretical efforts in active nematics have been carried out in the past decade, but the effects of initial and boundary conditions are scarcely studied.
Su, Jianbing, Zeng, Xiaoming, Cui, Zhenlu   +2 more
core  

Spectral Insights into Active Matter: Exceptional Points and the Mathieu Equation

Entropy
We show that recent numerical findings of universal scaling relations in systems of noisy, aligning self-propelled particles by Rüdiger Kürstencan robustly be explained by perturbation theory and known results for the Mathieu equation with purely ...
Horst-Holger Boltz, Thomas Ihle
doaj   +1 more source

Electrically activated ferroelectric nematic microrobots

Nature Communications
Ferroelectric nematic liquid crystals are fluids exhibiting spontaneous electric polarization, which is coupled to their long range orientational order. Due to their inherent property of making bound and surface charges, the free surface of ferroelectric
Marcell Tibor Máthé, Hiroya Nishikawa, Fumito Araoka, Antal Jákli, Péter Salamon   +4 more
doaj   +1 more source

Orientational ordering in active nematic solids

ArXiv
In vivo and in vitro systems of cells and extra-cellular matrix (ECM) systems are well known to form ordered patterns of orientationally aligned fibers. Here, we interpret them as active analogs of the (disordered) isotropic to the (ordered) nematic phase transition seen in passive liquid crystalline elastomers.
Yang, Haiqian, Guo, Ming, Mahadevan, L.
openaire   +3 more sources

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