Ions at surfaces: the decisive role of hydration water
Event details
| Date | 23.09.2013 |
| Hour | 11:00 |
| Speaker | Dr. Jordi Faraudo, Institut de Ciència de Materials de Barcelona (Prof. Eyal Heifetz) |
| Location | |
| Category | Conferences - Seminars |
There is growing evidence that water mediated effects play a substantial (even dominant) effect in colloidal and surface interactions in electrolyte solutions. For example, hydrophilic systems show enhanced stability due to the hydration force, a repulsive interaction whose molecular origin is still controversial. Ions adsorb at interfaces (or are repeled from them) depending on the relative hydration properties of the surfaces and the ions. The effect can be strong enough to induce giant charge reversal of the surface charge at an interface. Even for the case of multivalent ions, in which electrostatic correlations were supposed to dominate, the surface-ion interaction can be driven by solvation effects.
In this talk, I’ll show a few examples of these phenomena, including experimental results and their microscopic interpretation coming from MD simulations.
In this talk, I’ll show a few examples of these phenomena, including experimental results and their microscopic interpretation coming from MD simulations.
Practical information
- General public
- Free
Organizer
- Voitchovsky Kislon <[email protected]>
Contact
- Voitchovsky Kislon <[email protected]>