Exact analytical expressions for the potential of electrical double layer interactions for a sphere-plate system.

dc.contributor.author

Lin, Shihong

dc.contributor.author

Wiesner, Mark R

dc.coverage.spatial

United States

dc.date.accessioned

2011-06-21T17:26:59Z

dc.date.issued

2010-11-16

dc.description.abstract

Exact, closed-form analytical expressions are presented for evaluating the potential energy of electrical double layer (EDL) interactions between a sphere and an infinite flat plate for three different types of interactions: constant potential, constant charge, and an intermediate case as given by the linear superposition approximation (LSA). By taking advantage of the simpler sphere-plate geometry, simplifying assumptions used in the original Derjaguin approximation (DA) for sphere-sphere interaction are avoided, yielding expressions that are more accurate and applicable over the full range of κa. These analytical expressions are significant improvements over the existing equations in the literature that are valid only for large κa because the new equations facilitate the modeling of EDL interactions between nanoscale particles and surfaces over a wide range of ionic strength.

dc.description.version

Version of Record

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/20886833

dc.identifier.eissn

1520-5827

dc.identifier.uri

https://hdl.handle.net/10161/4088

dc.language

eng

dc.language.iso

en_US

dc.publisher

American Chemical Society (ACS)

dc.relation.ispartof

Langmuir

dc.relation.isversionof

10.1021/la103046w

dc.relation.journal

Langmuir

dc.title

Exact analytical expressions for the potential of electrical double layer interactions for a sphere-plate system.

dc.title.alternative
dc.type

Journal article

duke.date.pubdate

2010-11-16

duke.description.issue

22

duke.description.volume

26

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/20886833

pubs.begin-page

16638

pubs.end-page

16641

pubs.issue

22

pubs.organisational-group

Civil and Environmental Engineering

pubs.organisational-group

Duke

pubs.organisational-group

Duke Science & Society

pubs.organisational-group

Earth and Ocean Sciences

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Environmental Sciences and Policy

pubs.organisational-group

Initiatives

pubs.organisational-group

Institutes and Provost's Academic Units

pubs.organisational-group

Nicholas School of the Environment

pubs.organisational-group

Pratt School of Engineering

pubs.publication-status

Published

pubs.volume

26

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