Journal ArticleDOI
Confinement-induced phase transitions in simple liquids.
Jacob Klein,Eugenia Kumacheva +1 more
TLDR
The liquid-to-solid transition of a simple model liquid confined between two surfaces was studied as a function of surface separation and the rigidity of the confined films increased reversibly by at least seven orders of magnitude.Abstract:
The liquid-to-solid transition of a simple model liquid confined between two surfaces was studied as a function of surface separation. From large surface separations (more than 1000 angstroms) down to a separation corresponding to seven molecular layers, the confined films displayed a liquid-like shear viscosity. When the surface separation was further decreased by a single molecular spacing, the films underwent an abrupt, reversible transition to a solid. At the transition, the rigidity of the confined films (quantified in terms of an "effective viscosity") increased reversibly by at least seven orders of magnitude.read more
Citations
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Journal ArticleDOI
Long-wavelength fluctuations and dimensionality crossover in confined liquids
TL;DR: In this paper, a Debye-Waller model for the density of vibrational states of confined systems was developed and extensive numerical simulations were performed to demonstrate that the dimensionality crossover is apparent in the lateral size dependence of the relaxation dynamics of confined liquids, and the crossover to a sizeindependent relaxation dynamics occurs when structural relaxation takes place before the vibrational modes with the longest wavelength develop.
Journal ArticleDOI
Humidity induced interparticle friction and its mitigation in fine powder flow
Vikram Karde,Chinmay Ghoroi +1 more
TL;DR: In this paper, the authors report that humidity can affect the bulk behavior of fine hygroscopic powders at multiple levels and fewer mitigation approaches are presently available to counter its adverse effects.
Journal ArticleDOI
Experimental study on molecular arrangement of nanoscale lubricant films—A review
Shaohua Zhang,Yuhong Liu +1 more
TL;DR: The most representative achievements in the experimental research of molecular arrangement are reviewed in this paper, where the change of film structure of a liquid crystal under confinement has been obtained using X-ray method and the molecular orientation change of lubricant films has been observed using absorption spectroscopy.
Book ChapterDOI
Fundamental Aspects of Supercritical Gas Adsorption
TL;DR: In this article, the difference between supercritical gas and vapor with the van der Waals equation is analyzed, which leads to the critical point and the second virial coefficient, and plausible routes of quasi-vaporization for enhancing super-critical gas adsorption on nanoporous materials are suggested.
Journal ArticleDOI
Thermal Stability of Nanocrystals Confined in Nanoporous Media
Xing-You Lang,L. P. Han +1 more
TL;DR: The thermal stability of nanocrystals confined in nanopores is dramatically different from their bulk counterparts as mentioned in this paper, and the underlying mechanism and factors that dominate the general trend of thermal stability change are investigated.
References
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Journal ArticleDOI
Surface energy and the contact of elastic solids
TL;DR: In this paper, the influence of surface energy on the contact between elastic solids is discussed and an analytical model for its effect upon the contact size and the force of adhesion between two lightly loaded spherical solid surfaces is presented.
Book
The friction and lubrication of solids
Frank Philip Bowden,David Tabor +1 more
TL;DR: Tabor and Bowden as mentioned in this paper reviewed the many advances made in this field during the past 36 years and outlined the achievements of Frank Philip Bowden, and reviewed the behavior of non-metals, especially elastomers; elastohydrodynamic lubrication; and the wear of sliding surfaces.
Journal ArticleDOI
Slow viscous motion of a sphere parallel to a plane wall—I Motion through a quiescent fluid
TL;DR: Asymptotic solutions of the Stokes equations are derived for both the translational and rotational motions of a sphere parallel to a plane wall bounding a semi-infinite, quiescent, viscous fluid in the limit where the gap width tends to zero as discussed by the authors.
Journal ArticleDOI
Physics of the Granular State
TL;DR: The generation of analogies between the physics found in a simple sandpile and that found in complicated microscopic systems, such as flux motion in superconductors or spin glasses, has prompted a number of new theories and to a new era of experimentation on granular systems.