Molecular Viscosity

Shear Viscosity via Periodic Nonequilibrium Molecular Dynamics

Naitoh and Ono, by Simulating Couette flow, re­ cently measured the hardsphere viscosity coefficient for 108 hard spheres at the freezing density [1]. A pe­ riodic system undergoing homogeneous shear was studied with molecular dynamics. Similar calculations have also been carried out using the Lennard-Jones REE-EYRING potential [2-4]. At the freezing density Naitoh and Ono use a square­ "N ALDE...

Modelling Viscosity based on a Molecular Description

In this paper, we illustrate that the modern trends for viscosity prediction are moving away from empirically based methods to those that make use of a sound theoretical framework and are validated against primary experimental data. The Vesovic-Wakeham (VW) method is in the forefront of these developments. It is founded on the kinetic theory of hard-sphere fluids that is appropriately modified ...

Influence of Molecular Coherence on Surface Viscosity

Adding small fractions of cholesterol decreases the interfacial viscosity of dipalmitoylphosphatidylcholine (DPPC) monolayers by an order of magnitude per wt %. Grazing incidence X-ray diffraction shows that cholesterol at these small fractions does not mix ideally with DPPC but rather induces nanophase separated structures of an ordered, primarily DPPC phase bordered by a line-active, disorder...

Title: Mapping Microbubble Viscosity Using Fluorescence Lifetime Imaging of Molecular Rotors Short title: Molecular rotors measure microbubble viscosity using FLIM

Transient molecular dynamics simulations of viscosity for simple fluids.

A transient molecular dynamics (TMD) method has been developed for simulation of fluid viscosity. In this method a sinusoidal velocity profile is instantaneously overlaid onto equilibrated molecular velocities, and the subsequent decay of that velocity profile is observed. The viscosity is obtained by matching in a least-squares sense the analytical solution of the corresponding momentum transp...