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A model for thermal hysteresis utilizing the anisotropic interfacial energy of ice crystals

Citation

Wilson, PW, A model for thermal hysteresis utilizing the anisotropic interfacial energy of ice crystals, Cryobiology, 31, (4) pp. 406-412. ISSN 0011-2240 (1994) [Refereed Article]

DOI: doi:10.1006/cryo.1994.1049

Abstract

The mechanism of action of fish antifreeze agents is often modeled by an adsorption-inhibition process utilizing the Gibbs-Thomson or Kelvin effect of interface curvature. To date there is no direct evidence for the increase in interface curvature required by this model. In this paper we introduce a new model for thermal hysteresis which utilizes the anisotropic interfacial energy of polygonal ice crystals. While the maximum hysteresis found in polar fishes is 1.5C, some cold-hardy insects have more than 6C of hysteresis. The new model explains this difference in terms of the higher osmolality of the insect hemolymph causing an increase in the absolute anisotropy of the surface free energies of particular ice crystal faces.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Physical Chemistry (incl. Structural)
Research Field:Physical Chemistry not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Wilson, PW (Professor Peter Wilson)
ID Code:99889
Year Published:1994
Web of Science® Times Cited:20
Deposited By:Faculty of Health
Deposited On:2015-04-15
Last Modified:2017-09-04
Downloads:0

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