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Issue 12, 2018
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Electro-nucleation of water nano-droplets in No Man's Land to fault-free ice Ic

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Abstract

Elucidating water-to-ice freezing, especially in “No Man's Land” (150 K < T < 235 K), is fundamentally important (e.g., predicting upper-troposphere cirrus-cloud formation) – and elusive. An oft-neglected aspect of tropospheric ice-crystallite formation lies in inevitably-present electric fields’ role. Exploring nucleation in No Man's Land is technically demanding, owing to rapid nucleation rates, to mention nothing of difficulties of applying relevant electric fields thereto. Here, we tackle these intriguing open questions, via non-equilibrium molecular-dynamics simulations of sub-microsecond formation of rhombus-shaped ice Ic nano-crystallites from aggressively-quenched supercooled water nano-droplets in the gas phase, in external static electric fields. We explore droplets’ nano-confined geometries and the entropic-ordering agent of external electric fields as a means of realising cubic-ice formation, especially with very few stacking faults and defects.

Graphical abstract: Electro-nucleation of water nano-droplets in No Man's Land to fault-free ice Ic

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Publication details

The article was received on 01 Nov 2017, accepted on 06 Feb 2018 and first published on 07 Mar 2018


Article type: Paper
DOI: 10.1039/C7CP07406A
Citation: Phys. Chem. Chem. Phys., 2018,20, 8042-8053
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    Electro-nucleation of water nano-droplets in No Man's Land to fault-free ice Ic

    P. K. Nandi, C. J. Burnham and N. J. English, Phys. Chem. Chem. Phys., 2018, 20, 8042
    DOI: 10.1039/C7CP07406A

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