Direct imaging of repulsive and attractive colloidal glasses

@article{citeulike:1409983, abstract = {Coherent anti-Stokes Raman scattering microscopy is performed on glassy systems of poly(methylmethacrylate) colloidal particles in density- and refractive-index-matched solvents. Samples are prepared with varying amounts of linear polystyrene, which induces a depletion driven attraction between the nearly hard-sphere particles. Images collected over several hours confirm the existence of a reentrant glass transition. The images also reveal that the dynamics of repulsive and attractive glasses are qualitatively different. Colloidal particles in repulsive glasses exhibit cage rattling and escape, while those in attractive glasses are nearly static while caged but exhibit large displacements upon (infrequent) cage escape. \©2006 American Institute of Physics}, author = {Kaufman, Laura J. and Weitz, David A. }, citeulike-article-id = {1409983}, doi = {10.1063/1.2227386}, journal = {The Journal of Chemical Physics}, keywords = {colloids, microscope, weitz}, number = {7}, posted-at = {2008-04-23 18:39:38}, priority = {3}, publisher = {AIP}, title = {Direct imaging of repulsive and attractive colloidal glasses}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=JCPSA6000125000007074716000001\&idtype=cvips\&gifs=yes}, volume = {125}, year = {2006} }

TY - JOUR ID - citeulike:1409983 TI - Direct imaging of repulsive and attractive colloidal glasses JF - The Journal of Chemical Physics VL - 125 IS - 7 PB - AIP N2 - Coherent anti-Stokes Raman scattering microscopy is performed on glassy systems of poly(methylmethacrylate) colloidal particles in density- and refractive-index-matched solvents. Samples are prepared with varying amounts of linear polystyrene, which induces a depletion driven attraction between the nearly hard-sphere particles. Images collected over several hours confirm the existence of a reentrant glass transition. The images also reveal that the dynamics of repulsive and attractive glasses are qualitatively different. Colloidal particles in repulsive glasses exhibit cage rattling and escape, while those in attractive glasses are nearly static while caged but exhibit large displacements upon (infrequent) cage escape. ©2006 American Institute of Physics KW - colloids KW - microscope KW - weitz AU - Kaufman, Laura AU - Weitz, David PY - 2006/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JCPSA6000125000007074716000001&idtype=cvips&gifs=yes ER -