Spatial Control of Crystal Nucleation in Agarose Gel
Spatial Control of Crystal Nucleation in Agarose Gel
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DOI：
10.1021/ja905232m
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发表时间：
2009-08-26
影响因子：
15
通讯作者：
Alexander, Andrew J.
中科院分区：
文献类型：
--
作者：
Duffus, Carla;Camp, Philip J.;Alexander, Andrew J.
用过饱和氯化钾制备的琼脂糖水溶液，通过非光化学激光诱导成核，证明了晶体成核的时空控制。用光学掩膜控制成核位置；晶体只在暴露于近红外激光辐射的区域被观察到。结果表明，琼脂糖的加入降低了氯化钾水溶液的有效过饱和度。
Spatial and temporal control of crystal nucleation is demonstrated by nonphotochemical laser-induced nucleation of an aqueous agarose get 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 get reduces the effective supersaturation of the aqueous potassium chloride.