J.J. Kuna
The effect of nanometre-scale structure on interfacial energy
Kuna, J.J.; Voïtchovsky, K.; Singh, C.; Jiang, H.; Mwenifumbo, S.; Ghorai, P.K.; Stevens, M.M.; Glotzer, S.C.; Stellacci, F.
Authors
Professor Kislon Voitchovsky kislon.voitchovsky@durham.ac.uk
Professor
C. Singh
H. Jiang
S. Mwenifumbo
P.K. Ghorai
M.M. Stevens
S.C. Glotzer
F. Stellacci
Abstract
Natural surfaces are often structured with nanometre-scale domains, yet a framework providing a quantitative understanding of how nanostructure affects interfacial energy, italic gammaSL, is lacking. Conventional continuum thermodynamics treats italic gammaSL solely as a function of average composition, ignoring structure. Here we show that, when a surface has domains commensurate in size with solvent molecules, italic gammaSL is determined not only by its average composition but also by a structural component that causes italic gammaSL to deviate from the continuum prediction by a substantial amount, as much as 20% in our system. By contrasting surfaces coated with either molecular- (<2 nm) or larger-scale domains (>5 nm), we find that whereas the latter surfaces have the expected linear dependence of italic gammaSL on surface composition, the former show a markedly different non-monotonic trend. Molecular dynamics simulations show how the organization of the solvent molecules at the interface is controlled by the nanostructured surface, which in turn appreciably modifies italic gammaSL.
Citation
Kuna, J., Voïtchovsky, K., Singh, C., Jiang, H., Mwenifumbo, S., Ghorai, P., …Stellacci, F. (2009). The effect of nanometre-scale structure on interfacial energy. Nature Materials, 8(10), 837-842. https://doi.org/10.1038/nmat2534
Journal Article Type | Article |
---|---|
Publication Date | Sep 1, 2009 |
Deposit Date | Sep 9, 2013 |
Publicly Available Date | Feb 12, 2015 |
Journal | Nature Materials |
Print ISSN | 1476-1122 |
Electronic ISSN | 1476-4660 |
Publisher | Nature Research |
Peer Reviewed | Peer Reviewed |
Volume | 8 |
Issue | 10 |
Pages | 837-842 |
DOI | https://doi.org/10.1038/nmat2534 |
Public URL | https://durham-repository.worktribe.com/output/1478498 |
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