Interfacial Water at Biological and Inorganic Surfaces: <br>Super Capacitors, Aqueous Lubrication and possible Health Issues of Radio-Frequency Radiation


Roland Netz, Fachbereich Physik, Freie Universität Berlin

The molecular layer of water molecules on surfaces, the so-called hydration layer, is important for a whole number of properties of biological as well as technological surfaces. Insight can be gained from all-atomistic simulations in conjunction with appropriate continuum modeling.

  • Dielectric properties of interfacial water layers are important for the design of high-power capacitors, and can be spatially resolved in simulations.
  • Hydrophobic (water-repelling) surfaces in contact with water show a pronounced depletion layer with a thickness of a few Angstroms within which the water density is highly reduced, leading to superlubrication behavior which is relevant for technological low-friction applications.
  • Hydration water at biological membranes absorbs electromagnetic radiation specifically in the 0.1-10 GHz range that is used for radio communication. Possible health issues are discussed.


Montag, 13. Jänner 2014, 17:30 Uhr

(ab 17:00 Uhr Kaffee)

Universität Wien
Strudlhofgasse 4/1. Stock, 1090 Wien