Colloidal Glass Transition Observed in Confinement

by: Carolyn R Nugent, Kazem V Edmond, Hetal N Patel, Eric R Weeks

Physical Review Letters, Vol. 99, No. 2. (2007), pp. 025702-025702.

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Abstract

We study a colloidal suspension confined between two quasiparallel walls as a model system for glass transitions in confined geometries. The suspension is a mixture of two particle sizes to prevent wall-induced crystallization. We use confocal microscopy to directly observe the motion of colloidal particles. This motion is slower in confinement, thus producing glassy behavior in a sample which is a liquid in an unconfined geometry. For higher volume fraction samples (closer to the glass transition), the onset of confinement effects occurs at larger length scales.

@article{nugent07prl, abstract = {We study a colloidal suspension confined between two quasiparallel walls as a model system for glass transitions in confined geometries. The suspension is a mixture of two particle sizes to prevent wall-induced crystallization. We use confocal microscopy to directly observe the motion of colloidal particles. This motion is slower in confinement, thus producing glassy behavior in a sample which is a liquid in an unconfined geometry. For higher volume fraction samples (closer to the glass transition), the onset of confinement effects occurs at larger length scales.}, author = {Nugent, Carolyn R. and Edmond, Kazem V. and Patel, Hetal N. and Weeks, Eric R. }, citeulike-article-id = {1454769}, doi = {10.1103/PhysRevLett.99.025702}, journal = {Physical Review Letters}, keywords = {binary, colloids, confinement, confocal, glass, goldman, msd, pmma}, number = {2}, pages = {025702--025702}, posted-at = {2007-09-19 14:43:06}, priority = {0}, publisher = {APS}, title = {Colloidal Glass Transition Observed in Confinement}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000099000002025702000001\&idtype=cvips\&gifs=yes}, volume = {99}, year = {2007} }

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TY - JOUR ID - nugent07prl TI - Colloidal Glass Transition Observed in Confinement JF - Physical Review Letters VL - 99 IS - 2 SP - 025702 EP - 025702 PB - APS N2 - We study a colloidal suspension confined between two quasiparallel walls as a model system for glass transitions in confined geometries. The suspension is a mixture of two particle sizes to prevent wall-induced crystallization. We use confocal microscopy to directly observe the motion of colloidal particles. This motion is slower in confinement, thus producing glassy behavior in a sample which is a liquid in an unconfined geometry. For higher volume fraction samples (closer to the glass transition), the onset of confinement effects occurs at larger length scales. KW - binary KW - colloids KW - confinement KW - confocal KW - glass KW - goldman KW - msd KW - pmma AU - Nugent, Carolyn AU - Edmond, Kazem AU - Patel, Hetal AU - Weeks, Eric PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000002025702000001&idtype=cvips&gifs=yes ER -

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