Understanding water solidification, especially in “No Man’s Land” (NML) (150 K < T < 235 K) is crucially important (e.g., upper-troposphere cloud processes) and challenging. A rather neglected aspect of tropospheric ice-crystallite formation is inevitably present electromagnetic fields’ role. Here, we employ non-equilibrium molecular dynamics of aggressively quenched supercooled water nano-droplets in the gas phase under NML conditions, in externally applied electromagnetic (e/m) fields, elucidating significant differences between effects of static and oscillating fields: although static fields induce “electro-freezing,” e/m fields exhibit the contrary – solidification inhibition. This anti-freeze action extends not only to crystal-ice formation but also restricts amorphisation, i.e., suppression of low-density amorphous ice which forms otherwise in zero-field NML environments. E/m-field applications maintain water in the deeply supercooled state in an “entropic trap,” which is ripe for industrial impacts in cryo-freezing, etc.
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28 January 2018
Research Article|
January 24 2018
Electro-suppression of water nano-droplets’ solidification in no man’s land: Electromagnetic fields’ entropic trapping of supercooled water Available to Purchase
Prithwish K. Nandi;
Prithwish K. Nandi
a)
1
Irish Centre for High-End Computing
, Grand Canal Quay, Dublin 2, Ireland
2
School of Chemical and Bioprocess Engineering, University College Dublin
, Belfield, Dublin 4, Ireland
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Christian J. Burnham;
Christian J. Burnham
2
School of Chemical and Bioprocess Engineering, University College Dublin
, Belfield, Dublin 4, Ireland
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Niall J. English
Niall J. English
a)
2
School of Chemical and Bioprocess Engineering, University College Dublin
, Belfield, Dublin 4, Ireland
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Prithwish K. Nandi
1,2,a)
Christian J. Burnham
2
Niall J. English
2,a)
1
Irish Centre for High-End Computing
, Grand Canal Quay, Dublin 2, Ireland
2
School of Chemical and Bioprocess Engineering, University College Dublin
, Belfield, Dublin 4, Ireland
a)
Authors to whom correspondence should be addressed: [email protected], Tel.: +353-1-5241608 (ext. 22) and [email protected], Tel.: +353-1-7161646, Fax: +353-1-7161177.
J. Chem. Phys. 148, 044503 (2018)
Article history
Received:
September 13 2017
Accepted:
December 26 2017
Citation
Prithwish K. Nandi, Christian J. Burnham, Niall J. English; Electro-suppression of water nano-droplets’ solidification in no man’s land: Electromagnetic fields’ entropic trapping of supercooled water. J. Chem. Phys. 28 January 2018; 148 (4): 044503. https://doi.org/10.1063/1.5004509
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