Dipole and multipole models of dielectrophoresis for a non-negligible particle size: Simulations and experiments

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00312475" target="_blank" >RIV/68407700:21230/17:00312475 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/elps.201600466" target="_blank" >http://dx.doi.org/10.1002/elps.201600466</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/elps.201600466" target="_blank" >10.1002/elps.201600466</a>

Result language
angličtina
Original language name
Dipole and multipole models of dielectrophoresis for a non-negligible particle size: Simulations and experiments
Original language description
Mathematical models of dielectrophoresis play an important role in the design of experiments, analysis of results, and even operation of some devices. In this paper, we test the accuracy of existing models in both simulations and laboratory experiments. We test the accuracy of the most common model that involves a point-dipole approximation of the induced field, when the small-particle assumption is broken. In simulations, comparisons against a model based on the Maxwell stress tensor show that even the point-dipole approximation provides good results for a large particle close to the electrodes. In addition, we study a refinement of the model offered by multipole approximations (quadrupole, and octupole). We also show that the voltages on the electrodes influence the error of the model because they affect the positions of the field nulls and the nulls of the higher-order derivatives. Experiments with a parallel electrode array and a polystyrene microbead reveal that the models predict the force with an error that cannot be eliminated even with the most accurate model. Nonetheless, it is acceptable for some purposes such as a model-based control system design.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20204 - Robotics and automatic control

Project
<a href="/en/project/GBP206%2F12%2FG014" target="_blank" >GBP206/12/G014: Center for advanced bioanalytical technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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