Results 51 to 60 of about 3,171,566 (182)

Spatio-temporal control of the phase separation of chemically active immotile colloids

National Science Open, 2023
Understanding and controlling phase separation in nonequilibrium colloidal systems are of both fundamental and applied importance. In this article, we investigate the spatiotemporal control of phase separation in chemically active immotile colloids.
Peng Yixin, Li Longfei, Guo Shutong, Chen Xi, Zhou Chao, Xing Dingyu, Zhang Hepeng, Yang Mingcheng, Wang Wei   +8 more
doaj   +1 more source

Stochastic thermodynamics for active matter

, 2016
The theoretical understanding of active matter, which is driven out of equilibrium by directed motion, is still fragmental and model oriented. Stochastic thermodynamics, on the other hand, is a comprehensive theoretical framework for driven systems that ...
Speck, Thomas
core   +1 more source

Nature’s engines: active matter [PDF]

Europhysics News, 2017
Active materials, bacteria, molecular motors, and self-propelled colloids, continuously transform chemical energy from the environment to mechanical work. Dense active matter, from layers of cells to flocks of birds, self-assembles into intricate patterns.
openaire   +3 more sources

Synthetic Chemotaxis and Collective Behavior in Active Matter

, 2018
Conspectus: The ability to navigate in chemical gradients, called chemotaxis, is crucial for the survival of microorganisms. It allows them to find food and to escape from toxins.
Benno Liebchen, Eisenbach M., Hartmut Löwen, Murray J. D.   +3 more
core   +1 more source

A New Dark Matter Candidate: Non-thermal Sterile Neutrinos [PDF]

, 1999
We propose a new and unique dark matter candidate: $\sim 100$ eV to $\sim 10$ keV sterile neutrinos produced via lepton number-driven resonant MSW (Mikheyev-Smirnov-Wolfenstein) conversion of active neutrinos.
A. Burkert, A. Klypin, A. Kusenko, C. C. Steidel, D. Nötzold, D. O. Caldwell, E. W. Kolb, George M. Fuller, J. Gratsias, J. R. Bond, J. X. Prochaska, K. A. Olive, K. Kohri, L. Affleck, L. Wolfenstein, L. Wolfenstein, P. J. E. Peebles, R. Foot, S. Burles, S. Colombi, S. Dodelson, S. P. Mikheyev, X. Shi, Xiangdong Shi, Y. David, Y. I. Izotov   +25 more
core   +3 more sources

Avalanche Dynamics for Active Matter in Heterogeneous Media

, 2017
Using numerical simulations, we examine the dynamics of active matter run-and-tumble disks moving in a disordered array of obstacles. As a function of increasing active disk density and activity, we find a transition from a completely clogged state to a ...
Reichhardt, C., Reichhardt, C. J. O.
core   +1 more source

Trypanosoma brucei moving in microchannels and through constrictions

New Journal of Physics
Trypanosoma brucei ( T. brucei ), a single-celled parasite and natural microswimmer, is responsible for fatal sleeping sickness in infected mammals, including humans. Understanding how T.
Zihan Tan, Julian I U Peters, Holger Stark   +2 more
doaj   +1 more source

The role of fluid flow in the dynamics of active nematic defects

New Journal of Physics, 2021
We adapt the Halperin–Mazenko formalism to analyze two-dimensional active nematics coupled to a generic fluid flow. The governing hydrodynamic equations lead to evolution laws for nematic topological defects and their corresponding density fields.
Luiza Angheluta, Zhitao Chen, M Cristina Marchetti, Mark J Bowick   +3 more
doaj   +1 more source

Nonequilibrium glass transitions in driven and active matter

, 2013
The glass transition, extensively studied in dense fluids, polymers, or colloids, corresponds to a dramatic evolution of equilibrium transport coefficients upon a modest change of control parameter, like temperature or pressure.
Berthier, Ludovic, Kurchan, Jorge
core   +3 more sources

Dynamic Control of Speed and Trajectories of Active Droplets in a Nematic Environment by Electric Field and Focused Laser Beam

Frontiers in Physics, 2021
One objective of active matter science is to unveil principles by which chaotic microscale dynamics could be transformed into useful work. A nematic liquid crystal environment offers a number of possibilities, one of which is a directional motion of an ...
Mojtaba Rajabi, Mojtaba Rajabi, Hend Baza, Hend Baza, Hao Wang, Oleg D. Lavrentovich, Oleg D. Lavrentovich, Oleg D. Lavrentovich   +7 more
doaj   +1 more source