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This paper reviews and develops the proposal, widely discussed but not examined in detail, to use stratospheric aerosols to increase the Earth's albedo to Solar radiation in order to control climate change. The potential of this method has…

物理与社会 · 物理学 2012-06-15 J. I. Katz

The streaming instability (SI) has been extensively studied in the linear and non-linear regimes as a mechanism to concentrate solids and trigger planetesimal formation in the midplane of protoplanetary discs. A related dust settling…

地球与行星天体物理 · 物理学 2020-09-17 Leonardo Krapp , Andrew N. Youdin , Kaitlin M. Kratter , Pablo Benítez-Llambay

Particle suspensions, present in many natural and industrial settings, typically contain aggregates or other microstructures that can complicate macroscopic flow behaviors and damage processing equipment. Recent work found that applying…

软凝聚态物质 · 物理学 2018-07-31 Jikai Wang , J. M. Schwarz , Joseph D. Paulsen

The analytical solutions of the equations describing impurity diffusion due to migration of nonequilibrium impurity interstitials were obtained for the impurity redistribution during ion implantation at elevated temperatures and for…

材料科学 · 物理学 2008-02-24 O. I. Velichko , N. A. Sobolevskaya

We present a multi-scale model to study the attachment of spherical particles with a rigid core, coated with binding ligands and in equilibrium with the surrounding, quiescent fluid medium. This class of fluid-immersed adhesion is…

生物物理 · 物理学 2013-09-10 Sarthok Sircar , John G. Younger , David M. Bortz

We investigate the motion of a suspended non-Brownian sphere past a fixed cylindrical or spherical obstacle in the limit of zero Reynolds number for arbitrary particle-obstacle aspect ratios. We consider both a suspended sphere moving in a…

流体动力学 · 物理学 2016-05-04 Sumedh R. Risbud , German Drazer

We present an experimental investigation of the statistical properties of spherical granular particles on an inclined plane that are excited by an oscillating side-wall. The data is obtained by high-speed imaging and particle tracking…

软凝聚态物质 · 物理学 2009-11-07 Daniel L. Blair , A. Kudrolli

Based on recent calculations of the self-diffusion (SD) coefficient in amorphous silicon (a-Si) by classical Molecular Dynamics simulation [M. Posselt, H. Bracht, and D. Radi\'c, J. Appl. Phys. 131, 035102 (2022)] detailed investigations on…

材料科学 · 物理学 2024-06-19 Matthias Posselt , Hartmut Bracht , Mahdi Ghorbani-Asl , Drazen Radić

The scaled particle theory (SPT) approximation is applied for the study of the influence of a porous medium on the isotropic-nematic transition in a hard spherocylinder fluid. Two new approaches are developed in order to improve the…

软凝聚态物质 · 物理学 2018-04-02 M. F. Holovko , V. I. Shmotolokha

Viscous drag arises from the fluid at a surface having zero relative velocity, a phenomenon known as the no-slip condition. Superhydrophobic surfaces, when submerged in water, trap a layer of air in their surface texture, partially…

流体动力学 · 物理学 2026-03-16 Shaun Davey , Callum Atkinson , Julio Soria

SnO2 porous nanosolid (PNS) was prepared by a solvothermal hot-press method, and a new strategy was developed to improve its interfacial crystallinity and carrier mobility. It was found that the carrier mobility of SnO2 PNS was improved…

材料科学 · 物理学 2015-08-28 Chunhong Luan , Chao Wang , Bao Xu , Yujing Geng , Liangmin Zhang , Qilong Wang , Deliang Cui

MOF/polymer composites have been widely investigated in the past decade for gas separation applications. However, the impact of MOF nanoparticle morphology and size in gas separation have not yet been systematically studied by computer…

化学物理 · 物理学 2025-08-07 Cecilia M. S. Alvares , Rocio Semino

This work presents a technique for particle size generation and placement in arbitrary closed domains. Its main application is the simulation of granular media described by disks. Particle size generation is based on the statistical…

This paper presents a generalised and efficient wall boundary treatment in the smoothed particle hydrodynamics (SPH) method for 3-D complex and arbitrary geometries with single- and multi-phase flows to be executed on graphics processing…

计算物理 · 物理学 2022-09-14 Massoud Rezavand , Chi Zhang , Xiangyu Hu

This paper presents a divergence cleaning formulation for the velocity in the weakly compressible smoothed particle hydrodynamics (SPH) scheme. The proposed hyperbolic/parabolic divergence cleaning, ensures that the velocity divergence,…

流体动力学 · 物理学 2025-05-01 Georgios Fourtakas , Renato Vacondio , Benedict D. Rogers

It is shown that porous spherical particles can be obtained via the freezing of silica nanoparticle aqueous suspensions emulsified in a continuous oil phase. After two freeze-thaw cycles, nanoparticles turn aggregated into flocculated…

软凝聚态物质 · 物理学 2020-05-26 Mathieu Nespoulous , Mickaël Antoni , Carine Chassigneux , Renaud Denoyel

The properties of a thermally sprayed coating, such as its durability or thermal conductivity depend on its microstructure, which is in turn directly related to the particle impact process. To simulate this process we present a 3D Smoothed…

To simulate the transient enhanced diffusion near the surface or interface, a set of equations describing the impurity diffusion and quasichemical reactions of dopant atoms and point defects in ion-implanted layers is proposed and analyzed.…

材料科学 · 物理学 2007-05-23 O. I. Velichko , Yu. P. Shaman , A. K. Fedotov , A. V. Masanik

We demonstrate that discontinuous shear thickening (DST) can occur even in moderately dense, inertial suspensions of hydrodynamically interacting, frictionless soft particles. Using the Lubrication-Friction Discrete Element Method, our…

软凝聚态物质 · 物理学 2025-05-28 Satoshi Takada , Kazuhiro Hara , Hisao Hayakawa

High-performance osmotic energy conversion requires both large ionic throughput and high ionic selectivity, which can be significantly promoted by exterior surface charges simultaneously, especially for short nanopores. Here, we investigate…

化学物理 · 物理学 2022-06-08 Long Ma , Xuan An , Fenhong Song , Yinghua Qiu