08 Fakultät Mathematik und Physik
Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/9
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Item Open Access The role of dimensionality and geometry in quench-induced nonequilibrium forces(2021) Nejad, Mehrana Raeisian; Khalilian, Hamidreza; Rohwer, Christian M.; Moghaddam, Ali GhorbanzadehWe present an analytical formalism, supported by numerical simulations, for studying forces that act on curved walls following temperature quenches of the surrounding ideal Brownian fluid. We show that, for curved surfaces, the post-quench forces initially evolve rapidly to an extremal value, whereafter they approach their steady state value algebraically in time. In contrast to the previously-studied case of flat boundaries (lines or planes), the algebraic decay for curved geometries depends on the dimension of the system. Specifically, steady-state values of the force are approached in time as t-d/2 in d-dimensional spherical (curved) geometries. For systems consisting of concentric circles or spheres, the exponent does not change for the force on the outer circle or sphere. However, the force exerted on the inner circles or sphere experiences an overshoot and, as a result, does not evolve to the steady state in a simple algebraic manner. The extremal value of the force also depends on the dimension of the system, and originates from curved boundaries and the fact that particles inside a sphere or circle are locally more confined, and diffuse less freely than particles outside the circle or sphere.Item Open Access Linear response theory for equilibrium and nonequilibrium systems perturbed by nonconservative forces: the role of symmetries(2020) Asheichyk, Kiryl; Dietrich, Siegfried (Prof. Dr.)Item Open Access General properties of ionic complex fluids(2016) Bier, Markus; Dietrich, Siegfried (Prof. Dr.)Item Open Access Interfaces in fluids of ionic liquid crystals(2019) Bartsch, Hendrik; Dietrich, Siegfried (Prof. Dr.)Item Open Access Electrolyte solutions and simple fluids at curved walls(2018) Reindl, Andreas; Dietrich, Siegfried (Prof. Dr.)Item Open Access Electrolyte solutions at heterogeneously charged surfaces(2020) Mußotter, Maximilian; Dietrich, Siegfried (Prof. Dr.)Item Open Access Ionic liquids in conducting nanoslits : how important is the range of the screened electrostatic interactions?(2022) Groda, Yaroslav; Dudka, Maxym; Oshanin, Gleb; Kornyshev, Alexei A.; Kondrat, SvyatoslavAnalytical models for capacitive energy storage in nanopores attract growing interest as they can provide in-depth analytical insights into charging mechanisms. So far, such approaches have been limited to models with nearest-neighbor interactions. This assumption is seemingly justified due to a strong screening of inter-ionic interactions in narrow conducting pores. However, how important is the extent of these interactions? Does it affect the energy storage and phase behavior of confined ionic liquids? Herein, we address these questions using a two-dimensional lattice model with next-nearest and further neighbor interactions developed to describe ionic liquids in conducting slit confinements. With simulations and analytical calculations, we find that next-nearest interactions enhance capacitance and stored energy densities and may considerably affect the phase behavior. In particular, in some range of voltages, we reveal the emergence of large-scale mesophases that have not been reported before but may play an important role in energy storage.Item Open Access Effective interactions between colloidal particles in critical solvents(2018) Labbé-Laurent, Marcel; Dietrich, Siegfried (Prof. Dr.)Item Open Access Ferromagnetic colloids in liquid crystal solvents(2018) Zarubin, Grigorii; Dietrich, Siegfried (Prof. Dr.)Item Open Access Tricritical Casimir forces in 3He -4He wetting films(2017) Farahmand Bafi, Nima; Dietrich, Siegfried (Prof. Dr.)