Local Stress Control of Spatiotemporal Ordering of Colloidal Crystals in Complex Flows Export

@article{Shereda08, abstract = {We show that spin coating, an unsteady, nonuniform shear flow, produces spatiotemporal variation in the crystal order of concentrated colloidal dispersions that is a universal function of the local reduced critical stress and the macroscopic strain. The dependence of the crystal quality of model poly(methyl methacrylate) colloids on radial and axial position, spin speed, and particle size is quantified by confocal microscopy. The coupling of flow-induced crystallization with the centrifugally driven spin coating flow determines local crystal quality without a\ priori knowledge of the suspension rheology.}, author = {Shereda, Laura T. and Larson, Ronald G. and Solomon, Michael J.}, citeulike-article-id = {4418227}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000101000003038301000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v101/e038301}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.101.038301}, doi = {10.1103/PhysRevLett.101.038301}, journal = {Physical Review Letters}, keywords = {2008, boundary, colloiids, crystalline, prl, shear}, number = {3}, pages = {038301+}, posted-at = {2009-04-28 21:51:18}, priority = {2}, publisher = {APS}, title = {Local Stress Control of Spatiotemporal Ordering of Colloidal Crystals in Complex Flows}, url = {http://dx.doi.org/10.1103/PhysRevLett.101.038301}, volume = {101}, year = {2008} }

TY - JOUR ID - Shereda08 L3 - citeulike-article-id:4418227 N2 - We show that spin coating, an unsteady, nonuniform shear flow, produces spatiotemporal variation in the crystal order of concentrated colloidal dispersions that is a universal function of the local reduced critical stress and the macroscopic strain. The dependence of the crystal quality of model poly(methyl methacrylate) colloids on radial and axial position, spin speed, and particle size is quantified by confocal microscopy. The coupling of flow-induced crystallization with the centrifugally driven spin coating flow determines local crystal quality without a priori knowledge of the suspension rheology. IS - 3 JF - Physical Review Letters TI - Local Stress Control of Spatiotemporal Ordering of Colloidal Crystals in Complex Flows PB - APS VL - 101 SP - 038301 KW - 2008 KW - boundary KW - colloiids KW - crystalline KW - prl KW - shear AU - Shereda, Laura AU - Larson, Ronald AU - Solomon, Michael PY - 2008/// UR - http://dx.doi.org/10.1103/PhysRevLett.101.038301 ER -