Abstract
We use stroboscopic video microscopy to study the motion of a sheared fluid-gel interface. Mechanical noise plays a role analogous to temperature, but with a low-frequency breakdown of linear response consistent with an underlying instability. We relate the fast motion of the interface to the rheological properties of the gel, laying the foundation for a non-Brownian optical microrheology.
Original language | English (US) |
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Article number | 076001 |
Journal | Physical review letters |
Volume | 100 |
Issue number | 7 |
DOIs | |
State | Published - Feb 20 2008 |