Evidence for laser-induced homogeneous oriented ice nucleation revealed via pulsed x-ray diffraction

The Journal of Chemical Physics
Iftach NevoLeslie Leiserowitz

Abstract

The induction of homogeneous and oriented ice nucleation has to date not been achieved. Here, we report induced nucleation of ice from millimeter sized supercooled water drops illuminated by ns-optical laser pulses well below the ionization threshold making use of particular laser beam configurations and polarizations. Employing a 100 ps synchrotron x-ray pulse 100 ns after each laser pulse, an unambiguous correlation was observed between the directions and the symmetry of the laser fields and that of the H-bonding arrays of the induced ice crystals. Moreover, an analysis of the x-ray diffraction data indicates that, in the main, the induced nucleation of ice is homogeneous at temperatures well above the observed and predicted values for supercooled water.

References

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Apr 17, 2009·The Journal of Chemical Physics·Iftach NevoLeslie Leiserowitz
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Dec 12, 2012·Physical Review Letters·Maxim Artamonov, Tamar Seideman
Dec 13, 2016·Science·Alexei KiselevThomas Leisner
Aug 12, 2017·The Journal of Chemical Physics·Thomas Koop, Benjamin J Murray
Jan 24, 2019·Proceedings of the National Academy of Sciences of the United States of America·Martin FitznerAngelos Michaelides
Feb 3, 2019·The Journal of Chemical Physics·Andrew J Alexander, Philip J Camp

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