Zobrazeno 1 - 10
of 887
pro vyhledávání: '"A, Costigliola"'
Lennard-Jones (LJ) systems exhibit strikingly invariant structure and dynamics when energy polydispersity is introduced [Ingebrigtsen and Dyre, J. Phys. Chem. B 127, 2837 (2023)]. For instance, at a given state point the radial distribution function
Externí odkaz:
http://arxiv.org/abs/2411.07829
Publikováno v:
Phys. Rev. Lett. 133, 068001 (2024)
According to excess-entropy scaling, dynamic properties of liquids like viscosity and diffusion coefficient are determined by the entropy. This link between dynamics and thermodynamics is increasingly studied and of interest also for industrial appli
Externí odkaz:
http://arxiv.org/abs/2406.19858
We clarify the relationship between freezing, melting and the onset of glassy dynamics in the prototypical glass-forming Kob-Andersen mixture. Our starting point is a precise definition of the onset of glassiness, as expressed by the emergence of an
Externí odkaz:
http://arxiv.org/abs/2406.04921
Autor:
Böhmer, Till, Gabriel, Jan P., Costigliola, Lorenzo, Kociok, Jan-Niklas, Hecksher, Tina, Dyre, Jeppe C., Blochowicz, Thomas
Publikováno v:
Nat. Phys. 20, 637 (2024)
Physical ageing is the generic term for irreversible processes in glassy materials resulting from molecular rearrangements. One formalism for describing such ageing processes involves the concept of material time, which may be thought of as time meas
Externí odkaz:
http://arxiv.org/abs/2312.02395
Publikováno v:
J. Phys. Condens. Matter 36, 145101 (2024) [Open access]
In both experiments and simulations the most commonly studied kind of parameter polydispersity is that of varying particles size. This paper investigates by simulations the effects of introducing polydispersity in other parameters for two-dimensional
Externí odkaz:
http://arxiv.org/abs/2310.20015
Publikováno v:
J. Phys.: Condens. Matter 35, 445101 (2023) [Open access]
This paper studies size-polydisperse Lennard-Jones systems described by active Ornstein-Uhlenbeck particle dynamics. The focus is on the existence of isomorphs (curves of invariant structure and dynamics) in the model's three-dimensional phase diagra
Externí odkaz:
http://arxiv.org/abs/2305.09801
Configurational temperature in active matter. II. Quantifying the deviation from thermal equilibrium
Publikováno v:
Phys. Rev. E 107, 024610 (2023)
This paper suggests using the configurational temperature $\Tc$ for quantifying how far an active-matter system is from thermal equilibrium. We measure this ``distance'' by the ratio of the systemic temperature $\Ts$ to $\Tc$, where $\Ts$ is the cano
Externí odkaz:
http://arxiv.org/abs/2212.09041
Publikováno v:
Thermo 2, 160 (2022) [Open access]
Physical aging deals with slow property changes over time caused by molecular rearrangements. This is relevant for non-crystalline materials like polymers and inorganic glasses, both in production and during subsequent use. The Narayanaswamy theory f
Externí odkaz:
http://arxiv.org/abs/2206.05131
A simple model for viscous liquid dynamics is introduced. Consider the surface of the union of hyper-spheres centered at random positions inside a hypercube with periodic boundary conditions. It is argued and demonstrated by numerical simulations tha
Externí odkaz:
http://arxiv.org/abs/2206.03000
It is shown that the residual entropy (entropy minus that of the ideal gas at the same temperature and density) is mostly synonymous with the independent variable of density scaling, identifying a direct link between these two approaches. The two-bod
Externí odkaz:
http://arxiv.org/abs/2205.15885