Single droplet formation and crystal growth in urea solution induced by laser trapping

Ken-ichi Yuyama; Kei Ishiguro; Thitiporn Rungsimanon; Teruki Sugiyama; Hiroshi Masuhara

doi:10.1117/12.860241

27 August 2010 Single droplet formation and crystal growth in urea solution induced by laser trapping

Ken-ichi Yuyama, Kei Ishiguro, Thitiporn Rungsimanon, Teruki Sugiyama, Hiroshi Masuhara

Proceedings Volume 7762, Optical Trapping and Optical Micromanipulation VII; 776236 (2010) https://doi.org/10.1117/12.860241
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

A single dense liquid droplet of urea is formed by irradiating a focused continuous wave near-infrared laser beam to a glass/solution interface of a thin film of the unsaturated D₂O solution though its dynamic deformation. Conversely, in the supersaturated solution, neither droplet formation nor large solution deformation is observed. This can be explained on the basis of its high viscosity. In addition, crystal growth and dissolution are demonstrated by focusing the laser beam close to the crystal generated in the solution. All results are here discussed in view of local temperature elevation, mass transfer due to convection, and laser trapping of the clusters due to photon pressure, by comparing with experimental results for glycine.

Citation Download Citation

Ken-ichi Yuyama, Kei Ishiguro, Thitiporn Rungsimanon, Teruki Sugiyama, and Hiroshi Masuhara "Single droplet formation and crystal growth in urea solution induced by laser trapping", Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 776236 (27 August 2010); https://doi.org/10.1117/12.860241

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