Water at polar and nonpolar solid walls

journal article - other

English

Recent progress in simulating the properties of interfacial water at hard hydrophobic and hydrophilic surfaces is reviewed and compared to results for the air/water interface. The authors discuss static properties such as the equilibrium contact angle, the depletion layer thickness, and the orientation of interfacial water molecules. Relations between these properties, e. g., the relation between the contact angle and the thickness of the depletion layer which is experimentally observed on hydrophobic surfaces, are emphasized. For a hydrophilic sapphire surface, the authors discuss the influence of geometry and density of polar surface groups on the interfacial water structure. They discuss nonequilibrium effects arising in laminar shear flows, where the classic no-slip hydrodynamic boundary condition is violated at hydrophobic interfaces. They discuss the arising slip and relate it to static properties of the solid hydrophobic/water interface.

MOLECULAR-DYNAMICS SIMULATIONS; SELF-ASSEMBLED MONOLAYERS; LIQUID-VAPOR INTERFACE; INTERMOLECULAR POTENTIAL FUNCTIONS; HYDROPHILIC SURFACES; COMPUTER-SIMULATION; MONTE-CARLO; REFLECTIVITY MEASUREMENTS; HYDROPHOBIC INTERACTIONS; NEUTRON REFLECTIVITY

Sedlmeier, F., Janeček, J., Sendner, C., Bocquet, L., Netz, R.R., Horinek, D.

1. 9. 2008

American Vacuum Society

North Carolina USA

1559-4106

Biointerphases

3

3

United States of America

FC23

FC39

18