@inproceedings{c97d30b55a95439db0cbb9c89207b6b0,
title = "Superhydrophobic nanowire surfaces for drop movement using magnetic fields",
abstract = "We present a novel method to control water drop movement on superhydrophobic surfaces through magnetic fields. Water drops with paramagnetic particles can be moved on fractal Si-nanowire superhydrophobic surfaces at high speeds by displacing a magnet. A drop pinned to a surface defect can be combined with another drop containing paramagnetic particles thus allowing movement of the newly formed drop. A drop can also be split using two magnetic fields. Under a magnetic field, paramagnetic particles form chain-like clusters. The movement generating force appears as a consequence of chains pushing against the drop skin at the drop bottom, with chains acting as a lever and drop surface tension as a fulcrum. Our findings demonstrate the feasibility of using magnetic fields to move, combine and split aqueous drops on non-patterned superhydrophobic surfaces with the only driving force of magnetic fields, which appears as a promising way to manipulate small discrete amounts of water.",
keywords = "Droplet, Magnetic field, Microfluidics, Superhydrophobic surfaces",
author = "Ana Egatz-Gomez and Sonia Melle and Antonio Garcia and Solitaire Lindsay and Rubio, {Miguel A.} and Pablo Dom{\'i}nguez and Picraux, {S. T.} and Taraci, {J. L.} and Teresa Clement and Mark Hayes and Devens Gust",
year = "2006",
language = "English (US)",
isbn = "0976798573",
series = "2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings",
pages = "501--504",
booktitle = "2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings",
note = "2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings ; Conference date: 07-05-2006 Through 11-05-2006",
}