Fiber Dielectrophoresis

Dielectrophoresis is the motion of an uncharged particle in a nonuniform electric field. Using prolate spheroids to model cylindrical fibers, we find that the theoretical dielectrophoretic velocity of a conducting fiber in an insulating medium is proportional to the square of the fiber length and is...

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Bibliographic Details
Published inAerosol science and technology Vol. 11; no. 3; pp. 206 - 212
Main Authors Lipowicz, Peter J., Yeh, Hsu Chi
Format Journal Article
LanguageEnglish
Published London Taylor & Francis Group 01.01.1989
Taylor & Francis
Subjects
Chemistry
Colloidal state and disperse state
Emulsions. Microemulsions. Foams
Exact sciences and technology
General and physical chemistry
Length
Electrophoretic mobility
Fiber
Aerosols
Electrophoresis
Measurement method
Particle suspension
Experimental study
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Summary:Dielectrophoresis is the motion of an uncharged particle in a nonuniform electric field. Using prolate spheroids to model cylindrical fibers, we find that the theoretical dielectrophoretic velocity of a conducting fiber in an insulating medium is proportional to the square of the fiber length and is virtually independent of fiber diameter. This prediction has been verified experimentally using aluminum wire particles 0.5-5 mm long and 25-75 μm in diameter moving in the space between cylindrical electrodes in a medium of mineral oil. The results point to the development of a fiber length classifier based on dielectrophoresis.
ISSN:0278-6826
1521-7388
DOI:10.1080/02786828908959313