Rotation of charged polymer particles for potential applications in micro-propulsion systems

Title
Rotation of charged polymer particles for potential applications in micro-propulsion systems
Authors
최웅수도태구정영균전영상박용성고영건
Issue Date
2020-12
Publisher
Journal of Materials Chemistry C
Citation
VOL 8, NO 46-16348
Abstract
The possibility of an interelectrode oscillation behavior of dielectric dispersoids in colloidal dispersion by electric stimuli has been suggested but has not yet been reported. Here, we present a strategy for inducing the oscillation behavior based on dielectric constant (e)-matching and conductivity (s)-mismatching techniques between the dispersoids and dispersion medium. One of the electrophoresisbased bio-microparticles, Nannochloropsis gaditana (N. gaditana, e E 2.9?3.7), and olive oil, which has a similar dielectric constant (e E 3.1), were selected as dispersoid and dispersion medium, respectively. The conductivity mismatch was formed by controlling the temperature of the suspension. As the temperature increased from 25 to 50, 75, and 100 1C, the conductivity mismatch increased exponentially from 0.20 to 0.57, 2.17, and 11.95 ( 104 mS m1 ). The anaphoretic separation behavior of the dispersoids by electric stimuli, which was shown at 25 1C, changed to interelectrode oscillation behavior at 100 1C due to their high conductivity mismatch, as we expected.
URI
http://pubs.kist.re.kr/handle/201004/72602
ISSN
2050-7526
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KIST Publication > Article
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