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Heterogeneous nucleation of supercooled water, and the effect of an added catalyst
journal contributionposted on 2023-05-18, 09:15 authored by Heneghan, AF, Peter Wilson, Haymet, ADJ
The statistics of liquid-to-crystal nucleation are measured rigorously by using a recently developed automated lag-time apparatus (ALTA). A single sample, in this case a sample of pure water both with and without an (insoluble) AgI crystal, is repeatedly cooled, nucleated, and thawed. Analysis of the data, coupled with a second kind of experiment, shows that the statistics of nucleation are consistent with a first-order kinetic mechanism over a wide range of supercooling temperatures. The limitations of classical nucleation theory are exhibited. Our analysis unifies many related experiments in biology, physics, chemistry, and chemical engineering.
Publication titleNational Academy of Sciences of The United States of America. Proceedings
Department/SchoolCollege Office - College of Health and Medicine
PublisherNatl Acad Sciences
Place of publication2101 Constitution Ave Nw, Washington, USA, Dc, 20418