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Communication

Spatial Control of Crystal Nucleation in Agarose Gel

Carla Duffus, Philip J. Camp and Andrew J. Alexander*

School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, U.K.

J. Am. Chem. Soc., 2009, 131 (33), pp 11676–11677

DOI: 10.1021/ja905232m

Publication Date (Web): July 31, 2009

Abstract

Spatial and temporal control of crystal nucleation is demonstrated by nonphotochemical laser-induced nucleation of an aqueous agarose gel prepared with supersaturated potassium chloride. The location of nucleation was controlled by means of an optical mask; crystals were only observed in the area exposed to near-infrared laser radiation. The dependence of nucleation on laser power was measured, and the results suggest that the agarose gel reduces the effective supersaturation of the aqueous potassium chloride.

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History

Published In Issue August 26, 2009
Article ASAPJuly 31, 2009
Received: June 25, 2009

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Communication

Spatial Control of Crystal Nucleation in Agarose Gel