Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Roland G. Winkler"'
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-11 (2023)
Abstract The properties of biological microswimmers are mostly determined by fluid-mediated interactions, which govern their propulsion, perception of their surrounding, and the steering of their motion for pursuit. Transferring similar functionaliti
Externí odkaz:
https://doaj.org/article/20d04df864cb4e549066e134b011eacd
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013118 (2024)
The formation and dynamics of swarms is widespread in living systems, from bacterial biofilms to schools of fish and flocks of birds. We study this emergent collective behavior via agent-based simulations in a model of active Brownian particles with
Externí odkaz:
https://doaj.org/article/2057a53c74b44d76bbb37d5164e590f4
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-12 (2022)
Microswimmers are ubiquitous in nature and present highly-dynamic collective motion. This study presents computational simulations of spheroidal model-microswimmers confined between two walls, revealing two collective dynamic states, giant motile clu
Externí odkaz:
https://doaj.org/article/4de5aa9bd9a34272a07019e084b6476b
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033054 (2023)
The effect of curvature on an ensemble of repulsive active Brownian particles (ABPs) moving on a spherical surface is studied. Surface curvature strongly affects the dynamics of ABPs, as it introduces a new time scale τ=R/v_{0}, with curvature radiu
Externí odkaz:
https://doaj.org/article/74faee74fb3d4d009acb4f84dc4d1871
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033275 (2020)
Microswimmers exposed to microchannel flows exhibit an intriguing coupling between propulsion, shape, hydrodynamics, and flow which gives rise to distinct swimming behaviors. We employ a generic coarse-grained model of prolate spheroidal microswimmer
Externí odkaz:
https://doaj.org/article/37fe96da9965401c96e5171fedc70265
Autor:
Hideki Kobayashi, Roland G. Winkler
Publikováno v:
Polymers, Vol 6, Iss 5, Pp 1602-1617 (2014)
The structural properties of model microgel particles are investigated by molecular dynamics simulations applying a coarse-grained model. A microgel is comprised of a regular network of polymers internally connected by tetra-functional cross-links an
Externí odkaz:
https://doaj.org/article/98ad75c5fee64ff694e854788cb91fb5
Autor:
Antonio Lamura, Roland G. Winkler
Publikováno v:
Polymers, Vol 11, Iss 4, p 737 (2019)
The properties of a semiflexible polymer with fixed ends exposed to oscillatory shear flow are investigated by simulations. The two-dimensionally confined polymer is modeled as a linear bead-spring chain, and the interaction with the fluid is describ
Externí odkaz:
https://doaj.org/article/7092e0fa8dd149369f1b91364d67c6cb
Publikováno v:
Polymers, Vol 10, Iss 8, p 837 (2018)
The conformational and rheological properties of active filaments/polymers exposed to shear flow are studied analytically. Using the continuous Gaussian semiflexible polymer model extended by the activity, we derive analytical expressions for the dep
Externí odkaz:
https://doaj.org/article/5738df26651941d4b339bddf17d8be06
Publikováno v:
Polymers, Vol 9, Iss 1, p 15 (2017)
We investigate the conformational properties of polymers in ionic microgels in the presence of salt ions by molecular dynamics simulations and analytical theory. A microgel particle consists of coarse-grained linear polymers, which are tetra-function
Externí odkaz:
https://doaj.org/article/7ef99387296548bc82c020c88151c5a3
Publikováno v:
Polymers, Vol 8, Iss 8, p 304 (2016)
The conformational properties of flexible and semiflexible polymers exposed to active noise are studied theoretically. The noise may originate from the interaction of the polymer with surrounding active (Brownian) particles or from the inherent motio
Externí odkaz:
https://doaj.org/article/e62bbf28601d46988e2eb8861b605f4c