Related Experiment Video
Updated: Jul 13, 2026
08:59
Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays
Published on: April 15, 2013
Reversible wetting-dewetting transitions on electrically tunable superhydrophobic nanostructured surfaces
Tom N Krupenkin1, J Ashley Taylor, Evelyn N Wang
1Bell Laboratories, Alcatel-Lucent, Murray Hill, New Jersey 07974, USA. tnk@alcatel-lucent.com
Langmuir : the ACS Journal of Surfaces and Colloids
|August 1, 2007
Summary
Electrically controlled wetting and dewetting transitions on superhydrophobic surfaces were demonstrated. This research offers a new method for dynamically controlling liquid-solid interactions using voltage and current.
Area of Science:
- Materials Science
- Surface Science
- Nanotechnology
Background:
- Superhydrophobic surfaces exhibit unique water-repellent properties.
- Controlling liquid-solid interactions is crucial for various applications.
- Existing methods for dynamic surface control are limited.
Purpose of the Study:
- To demonstrate electrically controlled, fully reversible wetting-dewetting transitions.
- To investigate the mechanism behind these reversible transitions.
- To provide a novel method for dynamic liquid-solid interaction control.
Main Methods:
- Fabrication of nanostructured superhydrophobic surfaces.
- Application of electrical voltage and current to induce transitions.
- Experimental observation of droplet behavior.
- Theoretical analysis of the reversibility mechanism.
Main Results:
- Achieved fully reversible switching between Cassie-Baxter (superhydrophobic) and Wenzel (hydrophilic) states.
- Demonstrated dynamic control of droplet behavior using electrical stimuli.
- Elucidated the underlying mechanism of electrically induced wetting-dewetting.
Conclusions:
- Electrically controlled reversible wetting-dewetting is feasible on nanostructured surfaces.
- This provides a new paradigm for dynamic control of liquid-solid interactions.
- Potential applications in microfluidics, sensors, and self-cleaning surfaces.
