Control-oriented model of dielectrophoresis and electrorotation for arbitrarily shaped objects
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00331501" target="_blank" >RIV/68407700:21230/19:00331501 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevE.99.053307" target="_blank" >https://doi.org/10.1103/PhysRevE.99.053307</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevE.99.053307" target="_blank" >10.1103/PhysRevE.99.053307</a>
Alternative languages
Result language
angličtina
Original language name
Control-oriented model of dielectrophoresis and electrorotation for arbitrarily shaped objects
Original language description
The most popular modeling approach for dielectrophoresis (DEP) is the effective multipole (EM) method. It approximates the polarization-induced charge distribution in an object of interest by a set of multipolar moments. The Coulombic interaction of these moments with the external polarizing electric field then gives the DEP force and torque acting on the object. The multipolar moments for objects placed in arbitrary harmonic electric fields are, however, known only for spherical objects. This shape restriction significantly limits the use of the EM method. We present an approach for online (in real time) computation of multipolar moments for objects of arbitrary shapes having even arbitrary internal composition (inhomogeneous objects, more different materials, etc.). We exploit orthonormality of spherical harmonics to extract the multipolar moments from a numerical simulation of the polarized object. This can be done in advance (offline) for a set of external electric fields forming a basis so that the superposition principle can then be used for online operation. DEP force and torque can thus be computed in fractions of a second, which is needed, for example, in model-based control applications. We validate the proposed model against reference numerical solutions obtained using Maxwell stress tensor. We also analyze the importance of the higher-order multipolar moments using a sample case of a Tetris-shaped micro-object placed inside a quadrupolar microelectrode array and exposed to electrorotation. The implementation of the model in Matlab and Comsol is offered for free download.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
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)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICAL REVIEW E
ISSN
2470-0045
e-ISSN
2470-0053
Volume of the periodical
99
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
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UT code for WoS article
000469029000007
EID of the result in the Scopus database
2-s2.0-85066829520