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Heterogeneous catalysts consisting of supported metallic nanoparticles typically derive exceptional catalytic activity from their large proportion of under-coordinated surface sites which promote adsorption of reactant molecules.…

材料科学 · 物理学 2022-10-03 James P. Horwath , Colin Lehman-Chong , Aleksandra Vojvodic , Eric A. Stach

Modelling incompressible ideal fluids as a finite collection of vortex filaments is important in physics (super-fluidity, models for the onset of turbulence) as well as for numerical algorithms used in computer graphics for the real time…

可精确求解与可积系统 · 物理学 2007-10-10 Ulrich Pinkall , Boris Springborn , Steffen Weissmann

We introduce a solid-on-solid growth process which evolves by random deposition of dimers, surface diffusion, and evaporation of monomers from the edges of plateaus. It is shown that the model exhibits a robust transition from a smooth to a…

统计力学 · 物理学 2009-11-07 Haye Hinrichsen

We review progress in active hydrodynamic descriptions of flowing media on curved and deformable manifolds: the state-of-the-art in continuum descriptions of single-layers of epithelial and/or other tissues during development. First, after…

生物物理 · 物理学 2021-03-24 Sami C. Al-Izzi , Richard G. Morris

The dynamics of linear stochastic growth equations on growing substrates is studied. The substrate is assumed to grow in time following the power law $t^\gamma$, where the growth index $\gamma$ is an arbitrary positive number. Two different…

统计力学 · 物理学 2015-05-13 Carlos Escudero

Experimental results on amorphous ZrAlCu thin film growth and the dynamics of the surface morphology as predicted from a minimal nonlinear stochastic deposition equation are analysed and compared. Key points of this study are (i) an…

凝聚态物理 · 物理学 2009-10-31 M. Raible , S. G. Mayr , S. J. Linz , M. Moske , P. Hänggi , K. Samwer

The surface evolution model based on geometric partial differential equation is used to numerically study the kinetics of dewetting and dynamic morphologies for the localized pinhole defect in the surface of the ultrathin solid film with…

材料科学 · 物理学 2009-11-13 M. Khenner

The dynamics of a one dimensional growth model involving attachment and detachment of particles is studied in the presence of a localized growth inhomogeneity along with anchored boundary conditions. At large times, the latter enforce an…

统计力学 · 物理学 2007-05-23 M. D. Grynberg

A dynamical model is proposed to describe the coupled decomposition and profile evolution of a free surface film of a binary mixture. An example is a thin film of a polymer blend on a solid substrate undergoing simultaneous phase separation…

流体动力学 · 物理学 2013-03-25 Uwe Thiele , Santiago Madruga , Lubor Frastia

Frost growth on cold surfaces is a transient process with coupled heat and mass transfer. Due to multiple factors such as humidity, temperature, flow velocity and constantly changing thermal properties as frost grows, precise prediction can…

流体动力学 · 物理学 2021-03-05 Shantanu Shahane , Yuchen Shen , Sophie Wang

The time evolution and spatial correlations of nonaffine displacements in deformed amorphous solids are investigated using molecular dynamics simulations. The three-dimensional model glass is represented via the binary mixture, which is…

软凝聚态物质 · 物理学 2020-06-04 Nikolai V. Priezjev

We present a detailed systematical theoretical analysis of the post-growth processes occurring in nanofractals grown on surface. For this study we developed a method which accounts for the internal dynamics of particles in a fractal. We…

原子与分子团簇 · 物理学 2015-05-18 Veronika V. Dick , Ilia A. Solov'yov , Andrey V. Solov'yov

We study the nonlinear evolution of unstable flux compactifications, applying numerical relativity techniques to solve the Einstein equations in $D$ dimensions coupled to a $q$-form field and positive cosmological constant. We show that…

高能物理 - 理论 · 物理学 2021-09-13 Maxence Corman , William E. East , Matthew C. Johnson

We study the nonequilibrium phase transition in a model of aggregation of masses allowing for diffusion, aggregation on contact and fragmentation. The model undergoes a dynamical phase transition in all dimensions. The steady state mass…

统计力学 · 物理学 2015-06-25 Satya N. Majumdar , Supriya Krishnamurthy , Mustansir Barma

We consider the dynamics of thin two-dimensional viscous droplets on chemically heterogeneous surfaces moving under the combined effects of slip, mass transfer and capillarity. The resulting long-wave evolution equation for the droplet…

流体动力学 · 物理学 2021-12-20 Danny Groves , Nikos Savva

The mechanical behaviour of solid biological tissues has long been described using models based on classical continuum mechanics. However, the classical continuum theories of elasticity and viscoelasticity cannot easily capture the…

生物物理 · 物理学 2017-05-16 Shakti N. Menon , Cameron L. Hall , Scott W. McCue , D. L. Sean McElwain

In this paper, we investigate the dynamics of surface growth resulting from sedimentation of spherical granular particles in a fluid environment, using experiments and simulations. In the experimental part, spherical polystyrene particles…

软凝聚态物质 · 物理学 2024-01-30 Vahideh Sardari , Fatemeh Safari , Maniya Maleki

Mounding instability in a conserved growth from vapor is analysed within the framework of adatom kinetics on the growing surface. The analysis shows that depending on the local structure on the surface, kinetics of adatoms may vary, leading…

软凝聚态物质 · 物理学 2009-11-07 S. V. Ghaisas

We consider a macroscopic model for the growth of living tissues incorporating pressure-driven dispersal and pressure-modulated proliferation. Assuming a power-law relation between the mechanical pressure and the cell density, the model can…

偏微分方程分析 · 数学 2024-03-29 Tomasz Dębiec , Piotr Gwiazda , Błażej Miasojedow , Zuzanna Szymańska

The stability of organic solar cells is strongly affected by the morphology of the photoactive layers, whose separated crystalline and/or amorphous phases are kinetically quenched far from their thermodynamic equilibrium during the…

材料科学 · 物理学 2020-03-31 Olivier J. J. Ronsin , Jens Harting