Phase transitions and universal dynamics in confined films Export

@article{citeulike:1689609, abstract = {We describe molecular dynamics simulations of fluid films confined between two solid walls. The films consist of spherical molecules; or flexible linear chains with up to twenty monomers. When the wall separation is only a few molecular diameters; crystalline or glassy order is induced across the film. The onset of the glassy phase is characterized by rapidly increasing relaxation times. These manifest themselves through changes in the diffusion constant and in the response to shear. The viscosity exhibits the same power-law scaling with shear rate that was observed in recent experiments. Our study suggests that this response is a universal property of lubricants near a glass transition.}, author = {Thompson, Peter A. and Grest, Gary S. and Robbins, Mark O.}, citeulike-article-id = {1689609}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevLett.68.3448}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v68/i23/p3448_1}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRL/v68/i23/p3448_1}, doi = {10.1103/PhysRevLett.68.3448}, journal = {Physical Review Letters}, keywords = {confinement, glass, simulation, structure}, month = {June}, number = {23}, pages = {3448--3451}, posted-at = {2009-07-04 21:27:40}, priority = {2}, publisher = {American Physical Society}, title = {Phase transitions and universal dynamics in confined films}, url = {http://dx.doi.org/10.1103/PhysRevLett.68.3448}, volume = {68}, year = {1992} }

TY - JOUR ID - citeulike:1689609 L3 - citeulike-article-id:1689609 N2 - We describe molecular dynamics simulations of fluid films confined between two solid walls. The films consist of spherical molecules; or flexible linear chains with up to twenty monomers. When the wall separation is only a few molecular diameters; crystalline or glassy order is induced across the film. The onset of the glassy phase is characterized by rapidly increasing relaxation times. These manifest themselves through changes in the diffusion constant and in the response to shear. The viscosity exhibits the same power-law scaling with shear rate that was observed in recent experiments. Our study suggests that this response is a universal property of lubricants near a glass transition. IS - 23 JF - Physical Review Letters EP - 3451 TI - Phase transitions and universal dynamics in confined films PB - American Physical Society VL - 68 SP - 3448 KW - confinement KW - glass KW - simulation KW - structure AU - Thompson, Peter AU - Grest, Gary AU - Robbins, Mark PY - 1992/06// UR - http://dx.doi.org/10.1103/PhysRevLett.68.3448 ER -