Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3141511
Keywords
contact angle; copper; free energy; nucleation; oxidation; reaction kinetics theory; surface chemistry
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Funding
- National Science Foundation (NSF) [CMMI-0825737]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0825737] Funding Source: National Science Foundation
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The classical theory of nucleation has been extended to describe oxide nucleation during the oxidation of metals. It is found that the localized reaction of oxygen with an underlying metal substrate exerts a very strong influence on the free energy barrier of three-dimensional oxide nucleation, which can be characterized by an interfacial correlation function. Our results show that the nucleation barrier increases with the steepening of the contact angle between the nucleating phase and the substrate. This model is expected to find applicability in other reaction-induced heterogeneous nucleation systems.
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