Visit and seminar by Prof. Robert Evans FRS: A physicist’s view of hydrophobicity: drying and the role of density fluctuations

Centre for Computational Physics

Robert_Evans

Prof. Robert Evans FRS from the HH Wills Physics Laboratory, University of Bristol, UK will give a seminar at the School of Mathematics and Physics, on Wednesday 10th of February 2016, 3 pm (room MB1019 in the Minerva Building, no 1 on the university map). Please join us in attending this interesting talk.

A physicist’s view of hydrophobicity: drying and the role of density fluctuations

All physical scientists would agree that for water (liquid) at a flat substrate a contact angle θ > 90º defines the substrate as hydrophobic (solvophobic): it prefers gas to liquid. A controversial question is whether there is an effective indicator of local ordering of the liquid, manifest at microscopic distances from the substrate, that correlates with the macroscopic (thermodynamic) contact angle. I argue that an important indicator is the local compressibility which measures fluctuations in the local density of the adsorbed liquid. For distances within…

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