Zobrazeno 1 - 10
of 554
pro vyhledávání: '"Nielaba P"'
Brownian dynamics simulations are utilized to study segregation phenomena far from thermodynamic equilibrium. In the present study, we expand upon the analysis of binary colloid mixtures and additionally introduce a third particle species to further
Externí odkaz:
http://arxiv.org/abs/2401.05067
The Ising model is one of the simplest and most well-established concepts to simulate phase transformations in complex materials. However, its most central constant, the interaction strength J between two nearest neighbors, is hard to obtain. Here we
Externí odkaz:
http://arxiv.org/abs/2306.09722
Publikováno v:
Phys. Rev. B 108, 014305 (2023)
We present a microscopic model, describing current-driven switching in metallic atomic-size contacts. Applying a high current through an atomic-size contact, creates a strong electronic nonequilibrium that excites vibrational modes by virtue of the e
Externí odkaz:
http://arxiv.org/abs/2303.03309
Publikováno v:
Phys. Rev. B 106, 195401 (2022)
We present here a theoretical method to determine the phononic contribution to the thermal conductance of nanoscale systems in the phase-coherent regime. Our approach makes use of classical molecular dynamics (MD) simulations to calculate the tempera
Externí odkaz:
http://arxiv.org/abs/2208.09171
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract We study the influence of the cargo shape on the capture and transport process of colloidal rods via swarms of active particles using Brownian dynamics simulations. Starting at random initial conditions, active particles that interact via th
Externí odkaz:
https://doaj.org/article/27a7484783e24df1a8ac555311d907f3
Publikováno v:
Phys. Rev. B 100, 125433 (2019)
We adapt existing phonon heat transport methods to compute the phononic thermal conductance of metallic atomic contacts during a stretching process. Nonequilibrium molecular dynamics (NEMD) simulations are used to generate atomic configurations and t
Externí odkaz:
http://arxiv.org/abs/1907.08403
Autor:
Steinwandel, Ulrich P., Beck, Marcus C., Arth, Alexander, Dolag, Klaus, Moster, Benjamin P., Nielaba, Peter
We present simulations of isolated disc galaxies in a realistic environment performed with the Tree-SPMHD-Code Gadget-3. Our simulations include a spherical circum-galactic medium (CGM) surrounding the galactic disc, motivated by observations and the
Externí odkaz:
http://arxiv.org/abs/1808.09975
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract We experimentally and numerically study the flow of programmable active particles (APs) with tunable cohesion strength through geometric constrictions. Similar to purely repulsive granular systems, we observe an exponential distribution of b
Externí odkaz:
https://doaj.org/article/27bf4a53dfbe4e9c9ffd07968854b07d
Publikováno v:
Phys. Rev. B 96, 205405 (2017)
Motivated by recent experiments [Science 355, 6330 (2017); Nat. Nanotechnol. 12, 430 (2017)], we present here an extensive theoretical analysis of the thermal conductance of atomic-size contacts made of three different metals, namely gold (Au), plati
Externí odkaz:
http://arxiv.org/abs/1709.00220
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043272 (2023)
The Ising model is one of the simplest and most well-established concepts to simulate phase transformations in complex materials. However, its most central constant, the interaction strength J between two nearest neighbors, is hard to obtain. Here we
Externí odkaz:
https://doaj.org/article/d3941d7f78a1417b861ece7f20a11c33