Experimental Soft Condensed Matter Group
Harvard University, Prof. D. A. Weitz

Cool Picture of the Month
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These pictures are cholesteric droplets in water with PVA as the surfactant. In the limit when the pitch of the cholesteric material is much smaller than the radius of the droplet, we get these ring like patterns. The distance between the rings is the pitch of the cholesteric.

Picture provided by Vikram Prasad.


Other pictures of these sorts of droplets...

Past cool pictures...