CiteULike: dchen's library [611 articles] http://www.citeulike.org/user/dchen/article/1203416 CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/1203416 <i>Physical Review Letters, Vol. 89, No. 9. (2002), 095704.</i><br /><br />We use confocal microscopy to study particle motion in colloidal systems. Near the glass transition; motion is inhibited; as particles spend time trapped in transient “cages” formed by neighboring particles. We measure the cage sizes and lifetimes; which; respectively; shrink and grow as the glass transition approaches. Cage rearrangements are more prevalent in regions with lower concentrations and higher disorder. Neighboring rearranging particles typically move in parallel directions; although a nontrivial fraction moves in antiparallel directions; usually from particle pairs with initial separations corresponding to local maxima and minima of the pair correlation function g ( r ); respectively. Properties of Cage Rearrangements Observed near the Colloidal Glass Transition Eric Weeks DA Weitz doi:10.1103/PhysRevLett.89.095704 Physical Review Letters, Vol. 89, No. 9. (2002), 095704. 2007-04-02T22:33:06-00:00 Physical Review Letters 89 9 095704 American Physical Society glass review weeks weitz