Electrical tomography sensing and dielectrophoresis in microchannel for 3D particle mixing

Nur Tantiyani Ali Othman, Je Eun Choi, Masahiro Takei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The present study describes the electrical tomography sensing and dielectrophoresis (DEP) force for visualize the 3D particle mixing in the microchannel system. In the presence of nonuniform electric fields generated by point microelectrodes, the dynamic distribution behaviors of a polystyrene particle and deionized water had been investigated in this system. Microchannel was fabricated with five cross sections where 12 electrodes were installed for each measurement plane. In this experiment, the relationship between electric field frequency and DEP force of particles are calculated at different electric frequencies and diameter of particles. The applied electric field intensities are E=±1 V/mm, ±3 V/mm and ±5 V/mm while the electric field frequencies are f=1 kHz, 10 kHz, 100 kHz and 1 MHz and the diameter of particles are 1.3μm, 1.5μm and 2.0μm are investigated in this experiment. Simultaneously, imaged by manipulating tomography sensing at cross section A, C and D and the coupled DEP forces at cross section B and D, the particles flowing had been visualized and concentrate uniformly at near the outlets. The electrical capacitances and DEP forces between the electrode pairs of the microchannel were measured and the ECT tomograms representing the particle distribution were constructed from the measured capacitance data for each cross section in microchannel.

Original languageEnglish
Title of host publicationASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011
Pages211-217
Number of pages7
Volume1
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011 - Edmonton, AB
Duration: 19 Jun 201122 Jun 2011

Other

OtherASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011
CityEdmonton, AB
Period19/6/1122/6/11

Fingerprint

Microchannels
Electrophoresis
Tomography
Electric fields
Capacitance
Electrodes
Deionized water
Microelectrodes
Polystyrenes
Experiments

ASJC Scopus subject areas

  • Process Chemistry and Technology

Cite this

Ali Othman, N. T., Choi, J. E., & Takei, M. (2011). Electrical tomography sensing and dielectrophoresis in microchannel for 3D particle mixing. In ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011 (Vol. 1, pp. 211-217) https://doi.org/10.1115/ICNMM2011-58232

Electrical tomography sensing and dielectrophoresis in microchannel for 3D particle mixing. / Ali Othman, Nur Tantiyani; Choi, Je Eun; Takei, Masahiro.

ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011. Vol. 1 2011. p. 211-217.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ali Othman, NT, Choi, JE & Takei, M 2011, Electrical tomography sensing and dielectrophoresis in microchannel for 3D particle mixing. in ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011. vol. 1, pp. 211-217, ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011, Edmonton, AB, 19/6/11. https://doi.org/10.1115/ICNMM2011-58232
Ali Othman NT, Choi JE, Takei M. Electrical tomography sensing and dielectrophoresis in microchannel for 3D particle mixing. In ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011. Vol. 1. 2011. p. 211-217 https://doi.org/10.1115/ICNMM2011-58232
Ali Othman, Nur Tantiyani ; Choi, Je Eun ; Takei, Masahiro. / Electrical tomography sensing and dielectrophoresis in microchannel for 3D particle mixing. ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011. Vol. 1 2011. pp. 211-217
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