Results 131 to 140 of about 3,171,010 (214)
Machine learning topological defects in confluent tissues
Biophysical ReportsActive 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 +2 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.Electrically controlled liquid‐crystal twist diffraction element based on the Pancharatnam–Berry phase enables switchable structural periodicity and simultaneous generation of orthogonal circularly polarized coherent waves for multifunctional planar photonic devices.
Elena Melnikova +7 more
wiley +1 more source
Mesoscale particle-based modelling of active nematic liquid crystals [PDF]
Active matter --- materials with energy injection at local scales --- has developed rapidly in the past few decades, with applications ranging from the macroscopic scale of crowds and animal flocks, down to the mesoscale of bacteria colonies and active ...
Kozhukhov, Timofey
core +1 more source
Deformable active nematic particles and emerging edge currents in circular confinements. [PDF]
Eur Phys J E Soft Matter, 2022 Krause V, Voigt A.
europepmc +1 more source
Shaping Liquid Crystal Rubbers by Chemical Potential Gradient
Macromolecular Rapid Communications, EarlyView.Depositing a low molecular weight liquid crystal drop onto a uniformly aligned LCE leads to non‐uniform swelling, enabling temporary shape changes and bending actuation. These deformations are quantitatively modeled for different alignment conditions, and methods to permanently lock desired shapes are explored.
Mahesha Kodithuwakku Arachchige +3 more
wiley +1 more source
Photo‐Switched Catalytic Amyloids
Small, EarlyView.Photo‐switched reversible hierarchical assembly of catalytic amyloid fibrils is accomplished by mixing an amphiphilic cross‐ß peptide with a merocyanine photo switch. The peptide monomers, comprising phenylalanine‐lysine repeats, do not self‐assemble in water because of the electrostatic repulsion.
Shubhra Kanti Bhaumik +8 more
wiley +1 more source
Photosynthetically-powered phototactic active nematic liquid crystal fluids and gels
Communications MaterialsOne 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 +3 more
doaj +1 more source
Small, EarlyView.This study introduces a room‐temperature process to fabricate patterned TiO2@TiC core–shell nanowires, merging the biocompatibility of TiO2‐NWs with the high conductivity of TiC. Through sputtering pressure and time modulation, the nanowires morphology and electrochemical properties are tuned, enabling enhanced capacitance, stability, and guided ...
Roaa Sait +16 more
wiley +1 more source
Anisotropic swim stress in active matter with nematic order
New Journal of Physics, 2018 Active Brownian particles (ABPs) transmit a swim pressure ${{\rm{\Pi }}}^{{\rm{swim}}}=n\zeta {D}^{{\rm{swim}}}$ to the container boundaries, where ζ is the drag coefficient, D ^swim is the swim diffusivity and n is the uniform bulk number density far ...
Wen Yan, John F Brady
doaj +1 more source
Small, EarlyView.Recombinantly produced Tobacco Mosaic Virus coat protein (TMVcp) helical rods were demonstrated to reproducibly self‐assemble into hierarchically structured macroscopic filaments, driven by a lyotropic liquid crystal (LC) intermediate phase. The results indicate anisotropic molecular alignment of the fluid phase, retention of the native secondary ...
Guido M. Merino +2 more
wiley +1 more source