Probing the Equilibrium Dynamics of Colloidal Hard Spheres above the Mode-Coupling Glass Transition Export

@article{brambilla09, abstract = {We use dynamic light scattering and computer simulations to study equilibrium dynamics and dynamic heterogeneity in concentrated suspensions of colloidal hard spheres. Our study covers an unprecedented density range and spans seven decades in structural relaxation time, , including equilibrium measurements above c, the location of the glass transition deduced from fitting our data to mode-coupling theory. Instead of falling out of equilibrium, the system remains ergodic above c and enters a new dynamical regime where increases with a functional form that was not anticipated by previous experiments, while the amplitude of dynamic heterogeneity grows slower than a power law with , as found in molecular glass formers close to the glass transition.}, author = {Brambilla, G. and El Masri, D E. M. and Pierno, M. and Berthier, L. and Cipelletti, L. and Petekidis, G. and Schofield, A. B.}, citeulike-article-id = {4114268}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000102000008085703000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v102/e085703}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.102.085703}, doi = {10.1103/PhysRevLett.102.085703}, journal = {Physical Review Letters}, keywords = {colloids, dls, hard-sphere, mct}, number = {8}, pages = {085703}, posted-at = {2009-08-26 00:30:43}, priority = {4}, publisher = {APS}, title = {Probing the Equilibrium Dynamics of Colloidal Hard Spheres above the Mode-Coupling Glass Transition}, url = {http://dx.doi.org/10.1103/PhysRevLett.102.085703}, volume = {102}, year = {2009} }

TY - JOUR ID - brambilla09 L3 - citeulike-article-id:4114268 N2 - We use dynamic light scattering and computer simulations to study equilibrium dynamics and dynamic heterogeneity in concentrated suspensions of colloidal hard spheres. Our study covers an unprecedented density range and spans seven decades in structural relaxation time, , including equilibrium measurements above c, the location of the glass transition deduced from fitting our data to mode-coupling theory. Instead of falling out of equilibrium, the system remains ergodic above c and enters a new dynamical regime where increases with a functional form that was not anticipated by previous experiments, while the amplitude of dynamic heterogeneity grows slower than a power law with , as found in molecular glass formers close to the glass transition. IS - 8 JF - Physical Review Letters EP - 085703 TI - Probing the Equilibrium Dynamics of Colloidal Hard Spheres above the Mode-Coupling Glass Transition PB - APS VL - 102 SP - 085703 KW - colloids KW - dls KW - hard-sphere KW - mct AU - Brambilla, G AU - El Masri, D AU - Pierno, M AU - Berthier, L AU - Cipelletti, L AU - Petekidis, G AU - Schofield, AB PY - 2009/// UR - http://dx.doi.org/10.1103/PhysRevLett.102.085703 ER -