Simultaneous measurements of bulk moduli and particle dynamics in a sheared colloidal glass

ORAL

Abstract

We present a novel study of glassy colloidal systems, using a stress-controlled rheometer in conjunction with a confocal microscope. This experimental setup combines the measurement of bulk moduli, using conventional rheology, with the ability to track the motion of individual particles, through confocal microscopy techniques. We explore the response of the system to applied shear, by simultaneously monitoring the macroscopic relaxation and microscopic particle dynamics, under conditions from the quiescent glass to a shear-melted liquid.

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Authors

  • Michael V. Massa

    DEAS, Harvard University, Cambridge, MA 02138, USA, Harvard University

  • Christoph Eisenmann

    DEAS, Harvard University, Cambridge, MA 02138, USA, DEAS, Harvard University

  • Chanjoong Kim

    DEAS, Harvard University, Cambridge, MA 02138, USA, DEAS, Harvard University, Division of Engineering and Applied Science. Harvard University

  • David Weitz

    Division of Engineering and Applied Sciences and Department of Physics, Harvard University, DEAS, Harvard University, Cambridge, MA 02138, USA, Harvard University, DEAS, Harvard University, Division of Engineering and Applied Science, Harvard University, Cambridge MA 02138, USA, Division of Engineering and Applied Science. Harvard University, Applied Physics, Harvard University