The morphology and
growth kinetics of ice single crystals in aqueous
solutions of type III antifreeze protein (AFP-III) have been studied
in detail over a range of AFP-III concentrations and supercoolings.
In pure water, the shape of ice crystals changes from the circular
disklike to planar dendritic with increasing supercooling. In AFP-III
solutions, ice crystals in the form of faceted plates, irregular dendrites
with polygonized tips, and needles appear with increasing supercooling
and AFP-III concentration. The growth rate of ice crystals in the
crystallographic a direction is 2 orders of magnitude
higher than that in the c direction. AFP-III molecules
cause the stoppage of the growth of the prismatic and basal faces
at low supercoolings. When supercooling exceeds the critical value,
AFP-III favors the acceleration of the growth in both a and c directions. The observed behavior of AFP-III
is explained in terms of the Cabrera-Vermilyea pinning model and the
specificity of the dissipation of latent heat from the growing crystals
with different shapes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.