Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Stein, David B."'
Fluid-structure interactions between active and passive components are important for many biological systems to function. A particular example is chromatin in the cell nucleus, where ATP-powered processes drive coherent motions of the chromatin fiber
Externí odkaz:
http://arxiv.org/abs/2309.12225
Autor:
Dutta, Sayantan, Farhadifar, Reza, Lu, Wen, kabacaoglu, Gokberk, Blackwell, Robert, Stein, David B, Lakonishok, Margot, Gelfand, Vladimir I., Shvartsman, Stanislav Y., Shelley, Michael J.
Life in complex systems, such as cities and organisms, comes to a standstill when global coordination of mass, energy, and information flows is disrupted. Global coordination is no less important in single cells, especially in large oocytes and newly
Externí odkaz:
http://arxiv.org/abs/2304.02112
We introduce a closure model for coarse-grained kinetic theories of polar active fluids. Based on a quasi-equilibrium approximation of the particle distribution function, the model closely captures important analytical properties of the kinetic theor
Externí odkaz:
http://arxiv.org/abs/2203.05869
Autor:
Stein, David B.
We present a spectrally accurate embedded boundary method for solving linear, inhomogeneous, elliptic partial differential equations (PDE) in general smooth geometries, focusing in this manuscript on the Poisson, modified Helmholtz, and Stokes equati
Externí odkaz:
http://arxiv.org/abs/2203.01798
Autor:
Stein, David B., Shelley, Michael J.
Publikováno v:
In Current Opinion in Cell Biology August 2024 89
Autor:
Stein, David B., Barnett, Alex H.
Well-conditioned boundary integral methods for the solution of elliptic boundary value problems (BVPs) are powerful tools for static and dynamic physical simulations. When there are many close-to-touching boundaries (eg, in complex fluids) or when th
Externí odkaz:
http://arxiv.org/abs/2109.08802
Continuum kinetic theories provide an important tool for the analysis and simulation of particle suspensions. When those particles are anisotropic, the addition of a particle orientation vector to the kinetic description yields a $2d-1$ dimensional t
Externí odkaz:
http://arxiv.org/abs/2106.14817
Ensembles of particles rotating in a two-dimensional fluid can exhibit chaotic dynamics yet develop signatures of hidden order. Such "rotors" are found in the natural world spanning vastly disparate length scales - from the rotor proteins in cellular
Externí odkaz:
http://arxiv.org/abs/2103.00296
Publikováno v:
Phys. Rev. Lett. 126, 028103 (2021)
In the cellular phenomena of cytoplasmic streaming, molecular motors carrying cargo along a network of microtubules entrain the surrounding fluid. The piconewton forces produced by individual motors are sufficient to deform long microtubules, as are
Externí odkaz:
http://arxiv.org/abs/2008.12018
The dissolution of solids has created spectacular geomorphologies ranging from centimeter-scale cave scallops to the kilometer-scale "stone forests" of China and Madagascar. Mathematically, dissolution processes are modeled by a Stefan problem, which
Externí odkaz:
http://arxiv.org/abs/2006.04736