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Sensors 2013, 13(2), 1965-1983; doi:10.3390/s130201965
Article

Numerical Simulation of Optically-Induced Dielectrophoresis Using a Voltage-Transformation-Ratio Model

1
, 2
 and 2,*
Received: 13 December 2012; in revised form: 16 January 2013 / Accepted: 29 January 2013 / Published: 4 February 2013
(This article belongs to the Special Issue Microfluidic Devices)
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Abstract: Optically-induced dielectrophoresis (ODEP) has been extensively used for the manipulation and separation of cells, beads and micro-droplets in microfluidic devices. With this approach, non-uniform electric fields induced by light projected on a photoconductive layer can be used to generate attractive or repulsive forces on dielectric materials. Then, moving these light patterns can be used for the manipulation of particles in the microfluidic devices. This study reports on the results from numerical simulation of the ODEP platform using a new model based on a voltage transformation ratio, which takes the effective electrical voltage into consideration. Results showed that the numerical simulation was in reasonably agreement with experimental data for the manipulation of polystyrene beads and emulsion droplets, with a coefficient of variation less than 6.2% (n = 3). The proposed model can be applied to simulations of the ODEP force and may provide a reliable tool for estimating induced dielectrophoretic forces and electric fields, which is crucial for microfluidic applications.
Keywords: optically-induced dielectrophoresis; numerical simulation; emulsion droplets; polystyrene beads optically-induced dielectrophoresis; numerical simulation; emulsion droplets; polystyrene beads
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Hung, S.-H.; Huang, S.-C.; Lee, G.-B. Numerical Simulation of Optically-Induced Dielectrophoresis Using a Voltage-Transformation-Ratio Model. Sensors 2013, 13, 1965-1983.

AMA Style

Hung S-H, Huang S-C, Lee G-B. Numerical Simulation of Optically-Induced Dielectrophoresis Using a Voltage-Transformation-Ratio Model. Sensors. 2013; 13(2):1965-1983.

Chicago/Turabian Style

Hung, Shih-Hsun; Huang, Sheng-Chieh; Lee, Gwo-Bin. 2013. "Numerical Simulation of Optically-Induced Dielectrophoresis Using a Voltage-Transformation-Ratio Model." Sensors 13, no. 2: 1965-1983.


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