Results 21 to 30 of about 3,181,240 (276)
RNA polymerase II clusters form in line with surface condensation on regulatory chromatin
Molecular Systems Biology, 2021 It is essential for cells to control which genes are transcribed into RNA. In eukaryotes, two major control points are recruitment of RNA polymerase II (Pol II) into a paused state, and subsequent pause release toward transcription.
Agnieszka Pancholi +10 more
doaj +1 more source
American Journal of Physics, 2023 In the past 20 years, active matter has been a very successful research field, bridging the fundamental physics of nonequilibrium thermodynamics with applications in robotics, biology, and medicine. Active particles, contrary to Brownian particles, can harness energy to generate complex motions and emerging behaviors. Most active-matter experiments are
Balda, Angelo Barona +3 more
openaire +2 more sources
Frontiers in Physics, 2022 Recent studies have shown that packings of cells, both eukaryotic cellular tissues and growing or swarming bacterial colonies, can often be understood as active nematic fluids.
Fabian Jan Schwarzendahl +3 more
doaj +1 more source
Frontiers in Robotics and AI, 2021 Phase-change material–elastomer composite (PCMEC) actuators are composed of a soft elastomer matrix embedding a phase-change fluid, typically ethanol, in microbubbles. When increasing the temperature, the phase change in each bubble induces a macroscopic
Gilles Decroly +11 more
doaj +1 more source
Anomalous cell sorting behavior in mixed monolayers discloses hidden system complexities
New Journal of Physics, 2021 In tissue development, wound healing and aberrant cancer progression cell–cell interactions drive mixing and segregation of cellular composites. However, the exact nature of these interactions is unsettled.
Paul Heine +4 more
doaj +1 more source
Active Matter, Microreversibility, and Thermodynamics. [PDF]
Research (Wash D C), 2020 Active matter, comprising many active agents interacting and moving in fluids or more complex environments, is a commonly occurring state of matter in biological and physical systems. By its very nature, active matter systems exist in nonequilibrium states.
Gaspard P, Kapral R.
europepmc +6 more sources
Alignments of a Microparticle Pair in a Glow Discharge
Molecules, 2021 Stability of a vertically aligned microparticle pair in a stratified glow DC discharge is experimentally investigated. Using laser perturbations, it is shown that, for the same discharge parameters, a pair of microparticles can be suspended in two stable
Evgeny A. Lisin +4 more
doaj +1 more source
Anomalous Topological Active Matter [PDF]
Physical Review Letters, 2019 6+5 pages, 4+4 figures, to appear in PRL, see also supplementary movie published with the ...
Sone, Kazuki, Ashida, Yuto
openaire +3 more sources
Theoretical framework for two-microswimmer hydrodynamic interactions
New Journal of Physics, 2021 Hydrodynamic interactions are crucial for determining the cooperative behavior of microswimmers at low Reynolds numbers. Here we provide a comprehensive analysis of the scaling laws and the strength of the interactions in the case of a pair of three ...
Sebastian Ziegler +4 more
doaj +1 more source
Spheroid mechanics and implications for cell invasion
Advances in Physics: X, 2021 Spheroids are widely used in vitro 3D multicellular model systems that mimic complex physiological microenvironments of tissues. As different cell types vary in deformability and adhesion, the choice of (heterogeneous) cell composition will define ...
Ruben C. Boot +2 more
doaj +1 more source