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首页> 外文期刊>Crystal growth & design >Femtosecond Laser-Induced Crystallization of 4-(Dimethylamino)-N-methyl-4-stilbazolium Tosylate
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Femtosecond Laser-Induced Crystallization of 4-(Dimethylamino)-N-methyl-4-stilbazolium Tosylate

机译:飞秒激光诱导的甲苯磺酸4-(二甲氨基)-N-甲基-4-stilbazolium结晶

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摘要

A femtosecond laser pulse was irradiated to a supersaturated methanol solution of an organic molecule,4-(dimethylamino)-N-methyl-4-stilbazolium tosylate(DAST),and its efficient crystallization was demonstrated under concentration and temperature conditions where spontaneous crystallization does not occur.The efficiency was higher than that using a nanosecond laser,and the nucleation depended on the laser repetition rate.The results suggest that the nucleation is trigged by cluster formation,which is ascribed to femtosecond laser irradiation effects,such as shock wave generation due to the ablation of the medium and an optical pressure due to the strong electric field.
机译:飞秒激光脉冲照射到有机分子4-(二甲基氨基)-N-甲基-4-苯乙烯基甲磺酸甲苯磺酸酯(DAST)的过饱和甲醇溶液中,并且在不自发结晶的浓缩和温度条件下证明了其有效的结晶效率高于纳秒激光,成核取决于激光的重复频率。结果表明,成簇会触发成核,这归因于飞秒激光辐照效应,例如产生的激波由于强电场导致介质烧蚀和光学压力下降。

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