Electrically tunable superhydrophobic nanostructured surfaces

We demonstrate effective mixing of microliter droplets using electrically tunable superhydrophobic nanostructured surfaces. By applying electrical voltage and current, droplets can be reversibly switched from a wetting to a non-wetting state, which induces fluid motion within the droplet. This mixing concept was verified using a DNA hybridization assay, in which a single droplet reversibility accelerated the hybridization reaction by an order of magnitude as compared to mixing by passive diffusion. This work offers a new method to effectively mix droplets for a variety of microfluidics applications. Keywords Droplet mixing

• Type: Journal
• Year: 2005
• Where: BELL
• Authors: Tom Krupenkin, J. Ashley Taylor, Paul Kolodner, Marc Hodes
• Keywords: BELL 2005, DNA Hybridization, Droplets, Et Al