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Heterogeneous nucleation of supercooled water, and the effect of an added catalyst
journal contribution
posted on 2023-05-18, 09:15 authored by Heneghan, AF, Peter Wilson, Haymet, ADJThe 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.
History
Publication title
National Academy of Sciences of The United States of America. ProceedingsVolume
99Issue
15Pagination
9631-4ISSN
0027-8424Department/School
College Office - College of Health and MedicinePublisher
Natl Acad SciencesPlace of publication
2101 Constitution Ave Nw, Washington, USA, Dc, 20418Repository Status
- Restricted