Electro-suppression of water nano-droplets’ solidification in no man’s land: Electromagnetic fields’ entropic trapping of supercooled water
2018
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...
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