Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife.
A water drop on a superhydrophobic surface that is pinned by wire loops can be reproducibly cut without formation of satellite droplets. Drops placed on low-density polyethylene surfaces and Teflon-coated glass slides were cut with superhydrophobic knives of low-density polyethylene and treated copp...
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2012-01-01
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doaj-515809a718744b2baa6119a2446c2fb42020-11-24T22:17:19ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0179e4589310.1371/journal.pone.0045893Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife.Ryan YanashimaAntonio A GarcíaJames AldridgeNoah WeissMark A HayesJames H AndrewsA water drop on a superhydrophobic surface that is pinned by wire loops can be reproducibly cut without formation of satellite droplets. Drops placed on low-density polyethylene surfaces and Teflon-coated glass slides were cut with superhydrophobic knives of low-density polyethylene and treated copper or zinc sheets, respectively. Distortion of drop shape by the superhydrophobic knife enables a clean break. The driving force for droplet formation arises from the lower surface free energy for two separate drops, and it is modeled as a 2-D system. An estimate of the free energy change serves to guide when droplets will form based on the variation of drop volume, loop spacing and knife depth. Combining the cutting process with an electrofocusing driving force could enable a reproducible biomolecular separation without troubling satellite drop formation.http://europepmc.org/articles/PMC3454355?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ryan Yanashima Antonio A García James Aldridge Noah Weiss Mark A Hayes James H Andrews |
spellingShingle |
Ryan Yanashima Antonio A García James Aldridge Noah Weiss Mark A Hayes James H Andrews Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. PLoS ONE |
author_facet |
Ryan Yanashima Antonio A García James Aldridge Noah Weiss Mark A Hayes James H Andrews |
author_sort |
Ryan Yanashima |
title |
Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. |
title_short |
Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. |
title_full |
Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. |
title_fullStr |
Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. |
title_full_unstemmed |
Cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. |
title_sort |
cutting a drop of water pinned by wire loops using a superhydrophobic surface and knife. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2012-01-01 |
description |
A water drop on a superhydrophobic surface that is pinned by wire loops can be reproducibly cut without formation of satellite droplets. Drops placed on low-density polyethylene surfaces and Teflon-coated glass slides were cut with superhydrophobic knives of low-density polyethylene and treated copper or zinc sheets, respectively. Distortion of drop shape by the superhydrophobic knife enables a clean break. The driving force for droplet formation arises from the lower surface free energy for two separate drops, and it is modeled as a 2-D system. An estimate of the free energy change serves to guide when droplets will form based on the variation of drop volume, loop spacing and knife depth. Combining the cutting process with an electrofocusing driving force could enable a reproducible biomolecular separation without troubling satellite drop formation. |
url |
http://europepmc.org/articles/PMC3454355?pdf=render |
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