Slip and Flow of Hard-Sphere Colloidal Glasses Export

@article{ballesta08, abstract = {We study the flow of concentrated hard-sphere colloidal suspensions along smooth, nonstick walls using cone-plate rheometry and simultaneous confocal microscopy. In the glass regime, the global flow shows a transition from Herschel-Bulkley behavior at large shear rate to a characteristic Bingham slip response at small rates, absent for ergodic colloidal fluids. Imaging reveals both the ” solid” microstructure during full slip and the local nature of the ” slip to shear” transition. Both the local and global flow are described by a phenomenological model, and the associated Bingham slip parameters exhibit characteristic scaling with size and concentration of the hard spheres.}, author = {Ballesta, P. and Besseling, R. and Isa, L. and Petekidis, G. and Poon, W. C. K.}, citeulike-article-id = {3812692}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000101000025258301000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v101/e258301}, journal = {Physical Review Letters}, keywords = {colloids, confocal, glass, rheology, shear}, number = {25}, pages = {258301}, posted-at = {2009-01-16 14:57:54}, priority = {5}, publisher = {APS}, title = {Slip and Flow of Hard-Sphere Colloidal Glasses}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000101000025258301000001&idtype=cvips&gifs=yes}, volume = {101}, year = {2008} }

TY - JOUR ID - ballesta08 L3 - citeulike-article-id:3812692 N2 - We study the flow of concentrated hard-sphere colloidal suspensions along smooth, nonstick walls using cone-plate rheometry and simultaneous confocal microscopy. In the glass regime, the global flow shows a transition from Herschel-Bulkley behavior at large shear rate to a characteristic Bingham slip response at small rates, absent for ergodic colloidal fluids. Imaging reveals both the “solid” microstructure during full slip and the local nature of the “slip to shear” transition. Both the local and global flow are described by a phenomenological model, and the associated Bingham slip parameters exhibit characteristic scaling with size and concentration of the hard spheres. IS - 25 JF - Physical Review Letters EP - 258301 TI - Slip and Flow of Hard-Sphere Colloidal Glasses PB - APS VL - 101 SP - 258301 KW - colloids KW - confocal KW - glass KW - rheology KW - shear AU - Ballesta, P AU - Besseling, R AU - Isa, L AU - Petekidis, G AU - Poon, WCK PY - 2008/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000101000025258301000001&idtype=cvips&gifs=yes ER -