Journal
CRYSTAL GROWTH & DESIGN
Volume 14, Issue 1, Pages 15-22Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg401065h
Keywords
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Funding
- National Science Council of Taiwan [NSC 102-2113-M-492-001-MY2, NSC 100-2113-M-009-001]
- MOE-ATU Project (National Chiao Tung University) of the Ministry of Education, Taiwan
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We demonstrate the growth of a tetragonal crystal of hen egg-white lysozyme (HEWL) in D2O buffer solution controlled by laser trapping with a focused continuous-wave (CW) near-infrared (NIR) laser beam. The focal spot was located at 10 mu m away from the edge of the target crystal that was generated spontaneously, and the crystal growth was observed although the focal spot size was much smaller than the distance. The growth rate of (101) and {110} faces of the tetragonal crystal was examined with various laser powers and polarizations. The rate observed under the irradiation was much different from those in spontaneous growth, namely, the growth rate of the {1 10} face showed a large decrease or increase depending on the irradiation time. The dynamics and mechanism of this unusual crystal growth behavior is discussed from the viewpoint of a large stable domain formation of the HEWL liquidlike clusters through liquid nucleation and growth and by considering the anisotropy of the cluster domain.
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