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We report molecular dynamics simulation studies addressing the effects of pore connectivity on the dynamics of two representative fluids CO$_2$ and ethane in silicalite by systematically varying the degree of pore connectivity through…

软凝聚态物质 · 物理学 2023-04-28 Siddharth Gautam , David R. Cole

We investigate finite-size effects on diffusion in confined fluids using molecular dynamics simulations and hydrodynamic calculations. Specifically, we consider a Lennard-Jones fluid in slit pores without slip at the interface and show that…

We present molecular dynamics simulations on the slow dynamics of a mixture of big and small soft-spheres with a large size disparity. Dynamics are investigated in a broad range of temperature and mixture composition. As a consequence of…

软凝聚态物质 · 物理学 2009-11-11 Angel J. Moreno , Juan Colmenero

The behavior of a confined spherical symmetric anomalous fluid under high external pressure was studied with Molecular Dynamics simulations. The fluid is modeled by a ore-softened potential with two characteristic length scales, which in…

软凝聚态物质 · 物理学 2014-08-21 José Rafael Bordin , Leandro B. Krott , Marcia C. B. Barbosa

Densely packed systems of thermal particles in curved geometries are frequently encountered in biological and microfluidic systems. In 2D systems, at sufficiently high surface coverage, diffusive motion is widely known to be strongly…

统计力学 · 物理学 2014-07-22 Remy Kusters , Stefan Paquay , Cornelis Storm

We implement molecular dynamics simulations in canonical ensemble to study the effect of confinement on a $2d$ crystal of point particles interacting with an inverse power law potential proportional to $r^{-12}$ in a narrow channel. This…

软凝聚态物质 · 物理学 2014-09-30 M. Ebrahim Foulaadvand , Neda Ojaghlou

Describing the diffusion of particles through crowded, confined environments with which they can interact is of considerable biological and technological interest. Under conditions where the confinement dimensions become comparable to the…

软凝聚态物质 · 物理学 2009-11-13 Mark L. Henle , Brian DiDonna , Christian D. Santangelo , Ajay Gopinathan

We study the influence of solid boundaries on dynamics and structure of active fluids as the height of the container, $z$, changes. Along the varying dimension, the geometry systematically increases, therefore, the confinement ($z$)…

软凝聚态物质 · 物理学 2021-09-08 Yi Fan , Kun-Ta Wu , Ali Aghvami , Seth Fraden , Kenneth Breuer

Molecular machines described in this paper are meant to be such molecular systems that make use of conformational mobility (i.e. hindered rotation around chemical bonds and molecular construction deformations with formation and breakage of…

化学物理 · 物理学 2007-05-23 Ye. V. Tourleigh , K. V. Shaitan

The phase behavior of hydrocarbon fluids confined in porous media has been reported to deviate significantly from that in the bulk environment due to the existence of sub-10nm pores. Though experiments and simulations have measured the…

软凝聚态物质 · 物理学 2020-03-16 Jiaoyan Li , Qi Rao , Yidong Xia , Michael P. Hoepfner , Milind Deo

In the cell, protein complexes form relying on specific interactions between their monomers. Excluded volume effects due to molecular crowding would lead to correlations between molecules even without specific interactions. What is the…

软凝聚态物质 · 物理学 2015-05-13 Wei Wang , Wei-Xin Xu , Y. Levy , E. Trizac , P. G. Wolynes

A molecular dynamics simulation of SPC/E water confined in a Silica pore is presented. The pore has been constructed to reproduce the average properties of a pore of Vycor glass. Due to the confinement and to the presence of a strong…

统计力学 · 物理学 2007-05-23 P. Gallo , M. Rovere

We study how confining the equilibrium hard-sphere fluid to restrictive one- and two-dimensional channels with smooth interacting walls modifies its structure, dynamics, and entropy using molecular dynamics and transition-matrix Monte Carlo…

统计力学 · 物理学 2007-05-23 Jeetain Mittal , Jeffrey R. Errington , Thomas M. Truskett

The origin of the dramatic slowdown of dynamics near the glass transition temperature (Tg) remains a long-standing fundamental and unresolved issue in soft condensed matter. While single-molecule (SM) experiments using fluorescent probes…

软凝聚态物质 · 物理学 2025-12-23 Jaladhar Mahato , Siyang Wang , Laura J. Kaufman

Many natural and industrial processes rely on constrained transport, such as proteins moving through cells, particles confined in nanocomposite materials or gels, individuals in highly dense collec- tives and vehicular traffic conditions.…

Hydrated excess protons under hydrophobic confinement are a critical component of charge transport behavior and reactivity in nanoporous materials and biomolecular systems. Herein excess proton confinement effects are computationally…

软凝聚态物质 · 物理学 2020-06-04 Xinyou Ma , Chenghan Li , Alex B. F. Martinson , Gregory A. Voth

Using molecular dynamics simulations we study the dynamics of a water-like TIP5P model of water in hydrophilic and hydrophobic confinement. We find that in case of extreme nanocofinement such that there is only one molecular layer of water…

软凝聚态物质 · 物理学 2010-05-14 Pradeep Kumar

Transport of molecules across membrane channels is investigated theoretically using exactly solvable discrete stochastic site-binding models. It is shown that the interaction potential between molecules and the channel has a strong effect…

软凝聚态物质 · 物理学 2009-11-11 Anatoly B. Kolomeisky

Structural and dynamical behavior of SO$_2$ molecules within ZSM22 is studied using MD simulations, to understand the influence of orientational disorder (OD) and intercrystalline spacing in ZSM22 as a function of adsorbate loading.…

材料科学 · 物理学 2023-10-27 I. Dhiman , Sadique Vellamarthodika , Siddharth Gautam

How the geometry of nano-sized confinement affects dynamics of biomaterials is interesting yet poorly understood. An elucidation of structural details upon nano-sized confinement may benefit manufacturing pharmaceuticals in biomaterial…

生物物理 · 物理学 2015-05-13 Shao-Qing Zhang , Margaret S. Cheung