標題: Dynamics and Mechanism of Laser Trapping-Induced Crystal Growth of Hen Egg White Lysozyme
作者: Tu, Jing-Ru
Yuyama, Ken-ichi
Masuhara, Hiroshi
Sugiyama, Teruki
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 1-Oct-2015
摘要: We propose the dynamics and mechanism of laser trapping-induced crystal growth of hen egg-white lysozyme (HEWL). A continuous-wave near-infrared laser beam is used as a trapping light source and focused at a point 10 mu m away from a target tetragonal HEWL crystal that is spontaneously generated in solution. Laser trapping of HEWL liquid-like clusters in solution increases local concentration in the focus, where the free motion and orientation of the clusters are strongly restricted, and the clusters show high rigidity and ordering. The cluster association and reorientation at the micrometer-sized focus is evolved to a large highly concentrated domain of the clusters, where the specific target crystal is grown. Initially, the high rigidity and ordering of the clusters strongly suppress the crystal grow rate compared to spontaneous crystal growth. Continuous laser trapping at the of the initially formed domain, however, leads to the transition to another domain with different concentration, rigidity, and ordering of the clusters, which surprisingly enhances the crystal growth rate. More interestingly, the clusters in both domains have anisotropic features reflecting the laser polarization direction, which also contributes to the crystal growth.
URI: http://dx.doi.org/10.1021/cg501860k
http://hdl.handle.net/11536/128232
ISSN: 1528-7483
DOI: 10.1021/cg501860k
期刊: CRYSTAL GROWTH & DESIGN
Volume: 15
Issue: 10
起始頁: 4760
結束頁: 4767
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