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APS » Journals » Phys. Rev. Lett. » Volume 89 » Issue 17
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Phys. Rev. Lett. 89, 175501 (2002) [4 pages]

Polarization Switching of Crystal Structure in the Nonphotochemical Light-Induced Nucleation of Supersaturated Aqueous Glycine Solutions

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Bruce A. Garetz* and Jelena Matic
Department of Chemical Engineering and Chemistry, Polytechnic University, Brooklyn, New York 11201

Allan S. Myerson
Department of Chemical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616

Received 2 October 2001; published 4 October 2002

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By switching between linear and circular polarization in the irradiation of supersaturated solutions of the amino acid glycine in water with intense nanosecond pulses of near-infrared laser light, we have obtained the γ and α phases, respectively, through nonphotochemical light-induced nucleation (NPLIN). This is the first report of light polarization controlling crystal structure. The intensity dependence of NPLIN in aqueous urea is also reported.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.175501
DOI:
10.1103/PhysRevLett.89.175501
PACS:
81.10.Aj, 42.50.Vk

*To whom correspondence should be addressed.

 
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