Results 31 to 40 of about 5,634,404 (299)
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
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
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
Learning to control active matter [PDF]
Physical Review Research, 2021 The study of active matter has revealed novel non-equilibrium collective behaviors, illustrating their potential as a new materials platform. However, most work treat active matter as unregulated systems with uniform microscopic energy input, which we refer to as activity.
Falk, Martin +3 more
openaire +4 more sources
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
Towards a thermodynamics of active matter [PDF]
Physical Review E, 2015 Self-propulsion allows living systems to display unusual collective behavior. Unlike passive systems in thermal equilibrium, active matter systems are not constrained by conventional thermodynamic laws. A question arises however as to what extent, if any, can concepts from classical thermodynamics be applied to nonequilibrium systems like active matter.
Takatori, Sho C., Brady, J. F.
openaire +4 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
Active Matter Clusters at Interfaces [PDF]
Frontiers in Materials, 2016 15 pages, 7 ...
Copenhagen, Katherine, Gopinathan, Ajay
openaire +5 more sources
Journal of Statistical Mechanics: Theory and Experiment, 2017 Abstract The study of systems with sustained energy uptake and dissipation at the scale of the constituent particles is an area of central interest in nonequilibrium statistical physics. Identifying such systems as a distinct category—Active matter—unifies our understanding of autonomous collective movement in the living world and in ...
+6 more sources