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New contribution to SI | SURFI

New contribution to SI

Surface Innovations Journal

Surface Innovations, the journal

A new paper was published in the Surface Innovations journal by our team. The title of the paper is “Hydrophobic nano-asperities in control of energy barrier during particle-surface interactions” and is co-authored by J. Drelich and P.K. Bowen. The paper presents a theoretical analysis of colloidal interactions between rough spherical particles and flat surfaces and is based on extended – DLVO model adopted by the authors to such system geometry.
It is shown that hydrophobic asperities with the radius of only a few nanometers reduce the energy required for particle attachment to a hydrophobic surface by several times. The value of this energy barrier is reduced by as much as two orders of magnitude when the radius of nano-sized asperities increases to a few tens of nanometers. Theoretical analysis presented also reveals that surface coverage of microscopic particles by nano-sized asperities is not as important as the size of the asperities.

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