Impeded structural relaxation of a hard-sphere colloidal suspension under confinement

Impeded structural relaxation of a hard-sphere colloidal suspension under confinement

The phenomenon of glass transition, such as the anomalous divergence in viscosity without apparent structural change, remains inadequately understood. We employ spatial confinement to probe length scale dependence on structural relaxation and concomitant glassy dynamics of a hard-sphere poly-(methyl...

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Veröffentlicht in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2008-01, Vol.77 (1 Pt 1), p.010501-010501, Article 010501
Hauptverfasser: Sarangapani, Prasad S, Zhu, Yingxi
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container_title Physical review. E, Statistical, nonlinear, and soft matter physics
container_volume 77
creator Sarangapani, Prasad S
Zhu, Yingxi
description The phenomenon of glass transition, such as the anomalous divergence in viscosity without apparent structural change, remains inadequately understood. We employ spatial confinement to probe length scale dependence on structural relaxation and concomitant glassy dynamics of a hard-sphere poly-(methyl methacrylate) colloidal suspension via confocal microscopy. Remarkable film thickness dependent scaling behavior is observed, where the mobility and relaxation processes of a "fluid" suspension are found to be significantly impeded as film thickness is reduced below 15-20 particle layers.
doi_str_mv 10.1103/PhysRevE.77.010501
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title Impeded structural relaxation of a hard-sphere colloidal suspension under confinement
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