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- W2994661497 abstract "Small particles of silver iodide (AgI) are known to have excellent ice nucleating capabilities and have been used in rain seeding applications. It is widely believed that the silver-terminated (0001) surface of β-AgI acts as a template for the basal plane of hexagonal ice. However, the (0001) surface of ionic crystals with the wurtzite structure is polar and will therefore exhibit reconstructions and defects. Here, we use atomistic molecular dynamics simulations to study how the presence of defects on AgI(0001) affects the rates and mechanism of heterogeneous ice nucleation at moderate supercooling at −10 °C. We consider AgI(0001) surfaces exhibiting vacancies, step edges, terraces, and pits and compare them to simulations of the corresponding ideal surface. We find that, while point defects have no significant effect on ice nucleation rates, step edges, terraces, and pits reduce both the nucleation and growth rates by up to an order of magnitude. The reduction of the ice nucleation rate correlates well with the fraction of the surface area around the defects where perturbations of the hydration layer hinder the formation of a critical ice nucleus." @default.
- W2994661497 created "2019-12-26" @default.
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- W2994661497 date "2019-12-11" @default.
- W2994661497 modified "2023-10-18" @default.
- W2994661497 title "Atomistic Simulation of Ice Nucleation on Silver Iodide (0001) Surfaces with Defects" @default.
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- W2994661497 doi "https://doi.org/10.1021/acs.jpcc.9b08502" @default.
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