Condensed Matter Theory

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Coulomb-driven band unflattening suppresses K-phonon pairing in moire graphene

Physical Review B: Condensed Matter and Materials Physics American Physical Society

Authors:

STEVEN SIMON, SIDDHARTH ASHOK PARAMESWARAN

Dependence of diffusion in Escherichia coli cytoplasm on protein size, environmental conditions and cell growth

Authors:

N Bellotto, J Agudo-Canalejo, R Colin, R Golestanian, G Malengo, V Sourjik

Developmental bias explains the evolutionary trend towards simple leaf shapes

Authors:

James S Malone, Nora S Martin, Samuel HA von der Dunk, Liliana M D谩valos, Ard A Louis

Divergent nonlinear response from quasiparticle interactions

Physical Review Letters American Physical Society

Authors:

Michele Fava, Sarang Gopalakrishnan, Romain Vasseur, Fabian HL Essler, Sa Parameswaran

Driven spheres, ellipsoids and rods in explicitly modeled polymer solutions.

Journal of physics. Condensed matter : an Institute of Physics journal

Authors:

Andreas Z枚ttl, Julia M Yeomans

Abstract:

Understanding the transport of driven nano- and micro-particles in complex fluids is of relevance for many biological and technological applications. Here we perform hydrodynamic multiparticle collision dynamics simulations of spherical and elongated particles driven through polymeric fluids containing different concentrations of polymers. We determine the mean particle velocities which are larger than expected from Stokes law for all particle shapes and polymer densities. Furthermore we measure the fluid flow fields and local polymer density and polymer conformation around the particles. We find that polymer-depleted regions close to the particles are responsible for an apparent tangential slip velocity which accounts for the measured flow fields and transport velocities. A simple two-layer fluid model gives a good match to the simulation results.