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Nanoscale wetting under electric field from molecular simulations.
Christopher D Daub1, Dusan Bratko, Alenka Luzar
1Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA.
Topics in Current Chemistry
|July 20, 2011
Summary
Electric fields tune surface wettability at the nanoscale. Molecular simulations reveal how external conditions and boundary conditions impact water
Area of Science:
- Surface Science
- Physical Chemistry
- Nanotechnology
Background:
- Electric fields are established tools for tuning surface wettability.
- Nanoscale experimental methods necessitate understanding electric field effects on water's interfacial properties.
- Novel nanoscale phenomena influence water's behavior under electric fields.
Purpose of the Study:
- To survey recent molecular simulation progress on electric field effects on water.
- To understand nanoscale effects on water interfacial tension and interactions.
- To highlight the role of external conditions and boundary conditions in modeling polar fluids.
Main Methods:
- Molecular simulations
- Review of recent progress
- Analysis of external and boundary conditions
Main Results:
- External conditions critically determine system response to electric fields.
- Appropriate boundary conditions are essential for modeling collective polarization in polar fluids.
- Nanoscale electric field effects on water interfacial tension and interactions are complex.
Conclusions:
- Understanding nanoscale electric field effects is crucial for advanced applications.
- This knowledge can modulate surface hydrophilicity/hydrophobicity for engineered and biological surfaces.
- Applications include surface manipulation in nanofluidic devices.
