Cooperative Dynamics in Two Dimensions Export

@article{citeulike:5692722, abstract = {We report results from molecular dynamics simulations of cooperative motion in a quasi-two-dimensional system of colloid particles. We find that the onset of the deviation of the single-particle displacement distribution from Gaussian form starts in the liquid phase and extends; with increasing magnitude; through the hexatic phase into the crystalline phase. The time for which the deviation is maximum increases exponentially with the density. As the density increases toward the hexatic phase a third dynamical relaxation mode emerges. We argue that the collective motion is generated by superpositions of instantaneous normal mode vibrations; with lifetimes that increase with the density; along paths with strong bond-orientation correlation.}, author = {Zangi, Ronen and Rice, Stuart A.}, citeulike-article-id = {5692722}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevLett.92.035502}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v92/i3/e035502}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRL/v92/i3/e035502}, doi = {10.1103/PhysRevLett.92.035502}, journal = {Physical Review Letters}, keywords = {2d, colloids, confinement, dyn-het, simulation}, month = {Jan}, number = {3}, pages = {035502+}, posted-at = {2009-08-31 18:17:32}, priority = {2}, publisher = {American Physical Society}, title = {Cooperative Dynamics in Two Dimensions}, url = {http://dx.doi.org/10.1103/PhysRevLett.92.035502}, volume = {92}, year = {2004} }

TY - JOUR ID - citeulike:5692722 L3 - citeulike-article-id:5692722 N2 - We report results from molecular dynamics simulations of cooperative motion in a quasi-two-dimensional system of colloid particles. We find that the onset of the deviation of the single-particle displacement distribution from Gaussian form starts in the liquid phase and extends; with increasing magnitude; through the hexatic phase into the crystalline phase. The time for which the deviation is maximum increases exponentially with the density. As the density increases toward the hexatic phase a third dynamical relaxation mode emerges. We argue that the collective motion is generated by superpositions of instantaneous normal mode vibrations; with lifetimes that increase with the density; along paths with strong bond-orientation correlation. IS - 3 JF - Physical Review Letters TI - Cooperative Dynamics in Two Dimensions PB - American Physical Society VL - 92 SP - 035502 KW - 2d KW - colloids KW - confinement KW - dyn-het KW - simulation AU - Zangi, Ronen AU - Rice, Stuart PY - 2004/Jan// UR - http://dx.doi.org/10.1103/PhysRevLett.92.035502 ER -