The effect of nanometre-scale structure on interfacial energy

Jeffrey J. Kuna; Kislon Voïtchovsky; Chetana Singh; Hao Jiang; Steve Mwenifumbo; Pradip K. Ghorai; Molly M. Stevens; Sharon C. Glotzer; Francesco Stellacci

doi:10.1038/nmat2534

The effect of nanometre-scale structure on interfacial energy

Jeffrey J. Kuna, Kislon Voïtchovsky, Chetana Singh, Hao Jiang, Steve Mwenifumbo, Pradip K. Ghorai, Molly M. Stevens, Sharon C. Glotzer, Francesco Stellacci

Fondazione IRCCS Istituto Neurologico "C. Besta"

Research output: Contribution to journal › Article › peer-review

Abstract

Natural surfaces are often structured with nanometre-scale domains, yet a framework providing a quantitative understanding of how nanostructure affects interfacial energy, γ SL, is lacking. Conventional continuum thermodynamics treats γ SL solely as a function of average composition, ignoring structure. Here we show that, when a surface has domains commensurate in size with solvent molecules, γ SL is determined not only by its average composition but also by a structural component that causes γ SL 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 (

Original language	English
Pages (from-to)	837-842
Number of pages	6
Journal	Nature Materials
Volume	8
Issue number	10
DOIs	https://doi.org/10.1038/nmat2534
Publication status	Published - Oct 2009

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
Condensed Matter Physics
Materials Science(all)
Chemistry(all)

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AU - Mwenifumbo, Steve

AU - Ghorai, Pradip K.

AU - Stevens, Molly M.

AU - Glotzer, Sharon C.

AU - Stellacci, Francesco

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The effect of nanometre-scale structure on interfacial energy

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