Linked Life Data

21696752

Source:http://linkedlifedata.com/resource/pubmed/id/21696752

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2011-7-4
pubmed:abstractText
Using phase-sensitive streaming potential experiments in a vacuum chamber, we demonstrate that lowering the ambient pressure of the air surrounding a hydrophobic, Zeonor microfluidic substrate results in a decrease in the time scale required for equilibration of the electrokinetic potential. At ambient air pressures below 0.74 atm, the electrokinetic potential changes from ?-84 mV to ?-11 mV in 5 h, while the same decrease occurs in a period of over 200 h when the system is at 1 atm. Returning a sub-atmospheric system (where the electrokinetic potential had equilibrated to -11 mV) to atmospheric pressure did not result in any additional change in the electrokinetic potential. This can be described as a type of hysteresis of the electrokinetic potential with dissolved gas concentration. No time or pressure dependence was observed for the electrokinetic potential of hydrophilic (silica) substrates.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1095-7103
pubmed:author
pubmed:copyrightInfo
Copyright © 2011 Elsevier Inc. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
361
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
381-7
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Ambient pressure effects on the electrokinetic potential of Zeonor-water interfaces.
pubmed:affiliation
Department of Biomedical Engineering, Cornell University, United States.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't