Document Type
Article
Publication Date
5-5-2011
Abstract
Short intense laser pulses of visible and infrared light can dramatically accelerate crystal nucleation from transparent solutions; previous studies invoke mechanisms that are only applicable for nucleation of ordered phases or high dielectric phases. However, we show that similar laser pulses induce CO2bubblenucleation in carbonated water. Additionally, in water that is cosupersaturated with argon and glycine, argon bubbles escaping from the water can induce crystal nucleation without a laser. Our findings suggest a possible link between laser-induced nucleation of bubbles and crystals.
Recommended Citation
B. C. Knott, J. L. LaRue, A. M. Wodtke, M. F. Doherty, B. Peters, Communication: Bubbles, crystals, and laser-induced nucleation, J. Chem. Phys. 2011, 134, 171102, DOI: 10.1063/1.3582897
FIG. 1. Bubbles form along the laser beam line in response to a single laser pulse. The supersaturation was c/c sat = 2.50. The laser produced 280 mJ/pulse at a wavelength of 532 nm, far above the threshold for laser-induced bubble nucleation.
Figure-2.pptx (79 kB)
FIG. 2. Supersaturation dependence of the threshold laser pulse energy to induce bubble nucleation in aqueous carbon dioxide solutions at three different laser wavelengths. The “ultrapure” solutions are prepared with 99.999% pure CO2 and ultrapure H2O; “tap” solutions are prepared with 99.5% pure CO2 and municipal tap H2O.
Figure-3.pptx (299 kB)
FIG. 3. Bubble-induced crystallization. Panels (a) and (b) show glycine crystal formation from a solution that is supersaturated with both glycine and argon and then shaken, whereas panels (c) and (d) show an absence of crystal formation when argon is absent.
Copyright
American Institute of Physics
Included in
Biological and Chemical Physics Commons, Other Chemistry Commons, Physical Chemistry Commons
Comments
Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in
B. C. Knott, J. L. LaRue, A. M. Wodtke, M. F. Doherty, B. Peters, Communication: Bubbles, crystals, and laser-induced nucleation, J. Chem. Phys. 2011, 134, 171102, DOI: 10.1063/1.3582897
and may be found at DOI: 10.1063/1.3582897.