| Electrorotation of Metallic Microspheres. | |
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MedLine Citation:
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PMID: 21302938 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Electrorotation (ER) experiments of gold-coated micrometer-sized spheres suspended in an electrolyte are presented for three different ionic conductivities over the frequency range of 100 Hz to 40 MHz. The direction of rotation was observed to be counter-field (opposite to the rotating field vector) with a single rotation peak. The maximum in rotation occurs for a frequency on the order of the reciprocal RC time constant for charging the double layer at the gold surface. Dielectrophoresis (DEP) experiments showed that the gold-coated particles undergo negative DEP at low frequencies and positive DEP at high frequencies with the same relaxation frequency as electrorotation. No induced charge electrophoresis was noticeable in ER or DEP experiments. |
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Authors:
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Yu K Ren; Diego Morganti; Hong Y Jiang; Antonio Ramos; Hywel Morgan |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-8 |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: - ISSN: 1520-5827 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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School of Electronics and Computer Science, University of Southampton, Highfield, Southampton SO17 1BJ, U.K. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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