We use holographic optical tweezers to drive locally a quasi-2D colloidal suspension.
As a result, the colloidal suspension experiences a smooth transition from strong driving to very week driving as the distance from the location of driving increases. At steady state, this gives rise to a non-uniform density distribution. We find that this density profile is a result of a competition between pressure induced by normal forces due to shear and osmotic pressure. We then use this system to study Signatures of non-equilibrium such as entropy production as a function of driving strength.
BRIEF ACADEMIC/EMPLOYMENT HISTORY:
- 2004 PhD physics Technion
- 2004-2008 Postdoc NYU with David G. Grier
- 2008- School of Chemistry, Tel Aviv University
- 2019- School of Physics & Astronomy, Tel Aviv University
MOST RECENT RESEARCH INTERESTS:
Non-equilibrium statistical mechanics, soft matter and microrheology, anomalous diffusion, optical trapping and imaging.