Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Th. Voigtmann"'
Autor:
Tobias Kordel, Fan Yang, H. L. Peng, Dirk Holland-Moritz, Th. Voigtmann, Thomas C. Hansen, S. T. Liu
We develop an embedded-atom method (EAM) model to perform classical molecular-dynamics computer simulations of a model of Zr-Ni-Al ternary melts, based on the existing binary ones. The EAM potential is validated against a broad range of experimental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b325fcf92845f9a8ac795a947a9ce5
https://doi.org/10.1103/physrevb.100.104202
https://doi.org/10.1103/physrevb.100.104202
We contrast the generic features of structural relaxation close to the idealized glass transition that are predicted by the self-consistent generalized Langevin equation theory (SCGLE) against those that are predicted by the mode-coupling theory of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e1df08e4d1af48e7a92fc5713c0837
https://doi.org/10.1103/physreve.100.042601
https://doi.org/10.1103/physreve.100.042601
Autor:
P. Heintzmann, Andreas Meyer, Florian Kargl, Benedikt Nowak, Fan Yang, K. Binder, Th. Voigtmann, Burkhard Schillinger
Publikováno v:
Physical Review B. 98
With a full set of experimentally obtained self- and interdiffusion coefficients, we are able to verify the relation between different transport coefficients in binary glass-forming Zr-Ni liquids. Despite a thermodynamic strong tendency of mixing, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db32a5093c7e8618cb5d53ec218c33c2
https://doi.org/10.1103/physrevb.98.064202
https://doi.org/10.1103/physrevb.98.064202
We explore the changes in static structure of a two-dimensional system of active Brownian particles (ABP) with hard-disk interactions, using event-driven Brownian dynamics simulations. In particular, the effect of the self-propulsion velocity and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb505170c44e01b0a1af479f1b211602
http://arxiv.org/abs/1712.08937
http://arxiv.org/abs/1712.08937
Publikováno v:
Physical Review Materials. 1
We investigate crystal-growth kinetics in the presence of strong shear flow in the liquid, using molecular-dynamics simulations of a binary-alloy model. Close to the equilibrium melting point, shear flow always suppresses the growth of the crystal-li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13274c9f2fe4b8910383077545d75279
https://doi.org/10.1103/physrevmaterials.1.030401
https://doi.org/10.1103/physrevmaterials.1.030401
Publikováno v:
Physical review / E 94(6), 060601 (R) (2016). doi:10.1103/PhysRevE.94.060601
Molecular dynamic simulations are performed to reveal the long-time behavior of the velocity autocorrelation function (VAF) by utilizing the finite-size effect in a Lennard-Jones binary mixture. Whereas in normal liquids the classical positive ${t}^{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b870f20b4bcb1935d19bd4328472ae9d
https://pubmed.ncbi.nlm.nih.gov/28085468
https://pubmed.ncbi.nlm.nih.gov/28085468
Autor:
Th. Voigtmann, H. L. Peng
Publikováno v:
Physical review. E. 94(4-1)
The growth of the characteristic length scales both for diffusion and viscosity is investigated by molecular dynamics utilizing the finite-size effect in a binary Lennard-Jones mixture. For those quantities relevant to the diffusion process (e.g., th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20aa1911ae94100bebb81a49db07c7a4
https://pubmed.ncbi.nlm.nih.gov/27841604
https://pubmed.ncbi.nlm.nih.gov/27841604
Autor:
S. Papenkort, Th. Voigtmann
Publikováno v:
The Journal of chemical physics. 143(20)
We present a hybrid-lattice Boltzmann (LB) algorithm for calculating the flow of glass-forming fluids that are governed by integral constitutive equations with pronounced nonlinear, non-Markovian dependence of the stresses on the flow history. The LB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee6677c6cb14718d1ead621d2801fc10
https://pubmed.ncbi.nlm.nih.gov/26627963
https://pubmed.ncbi.nlm.nih.gov/26627963
We investigate temperature- and composition dependent structural and dynamical p roperties of Al-Au melts. Experiments are performed to obtain accurate density and viscosity data. The system shows a strong negative excess volume, similar to other Al-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::496edfb7686a9827250273d3bc8347b5
https://elib.dlr.de/99744/
https://elib.dlr.de/99744/
Autor:
Th. Voigtmann
Publikováno v:
Journal of Non-Crystalline Solids. 352:4826-4829
The pressure-dependence of the elastic moduli of a Lennard-Jones (LJ) system is studied within mode-coupling theory (MCT). Assuming a recently proposed link between these quantities and Angell’s fragility to hold, this implies that the fragility of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26f866d8cc9f78ffee61135a2980886e
https://doi.org/10.1016/j.jnoncrysol.2006.02.145
https://doi.org/10.1016/j.jnoncrysol.2006.02.145