標題: Laser Trapping and Crystallization Dynamics of L-Phenylalanine at Solution Surface
作者: Yuyama, Ken-ichi
Sugiyama, Teruki
Masuhara, Hiroshi
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: 1-八月-2013
摘要: We present laser trapping behavior of L-phenylalanine (L-Phe) at a surface of its unsaturated aqueous solution by a focused continuous-wave (CW) near-infrared (NIR) laser beam. Upon the irradiation into the solution surface, laser trapping of the liquid-like clusters is induced concurrently with local laser heating, forming an anhydrous plate-like crystal at the focal spot. The following laser irradiation into a central part of the plate-like crystal leads to laser trapping at the crystal surface not only for L-Phe molecules/clusters but also for polystyrene (PS) particles. The particles are closely packed at crystal edges despite that the crystal surface is not illuminated by the laser directly. The molecules/clusters are also gathered and adsorbed to the crystal surface, leading to crystal growth. The trapping dynamics and mechanism are discussed in view of optical potential formed at the crystal surface by light propagation inside the crystal.
URI: http://dx.doi.org/10.1021/jz401122v
http://hdl.handle.net/11536/22128
ISSN: 1948-7185
DOI: 10.1021/jz401122v
期刊: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume: 4
Issue: 15
起始頁: 2436
結束頁: 2440
顯示於類別:期刊論文


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