Application process tomography to measure particle migration in microchannel

Nur Tantiyani Ali Othman, Masahiro Takei, Hiromichi Obara

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

Abstract

Nowadays, fluid flow in a microchannel has emerged as an important area of research. This has been motivated by their various applications such as medical and biomedical use, computer chips, and chemical separations. Usually, electrical impedance tomography (EIT) is visualized, into a cross-sectional image representing the distribution of density. EIT is recently developed imaging technique, with which images of the conductivity or permittivity of the subject can be rapidly collected with channels of external electrodes. Therefore, we considered application of EIT to the microchannels. In this paper, we develop the EIT for microchannel nano particles concentration in microchannel with 60 multi-layer electrodes and measured using cross-sectional impedance measurement technique. Based on the reconstructed image using the EIT system and analytical calculation using Maxwell equation, we discuss the initial concentration condition effect and the stream transitional migration to estimate particle migration behaviors in the fluid flow. The measured results shows up to 24% particles moved from upstream to downstream cross-section, where the particles move away from center streamlines to near wall vicinity area and the number of the particles migration towards wall vicinity area is clearly increased near the outlet area. The stream transitional particle migration due to inertia lift forces is investigated with the effect of the initial particle concentration.

Original languageEnglish
Title of host publicationASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013
DOIs
Publication statusPublished - 2013
Externally publishedYes
EventASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013 - Sapporo
Duration: 16 Jun 201319 Jun 2013

Other

OtherASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013
CitySapporo
Period16/6/1319/6/13

Fingerprint

Acoustic impedance
Microchannel
Electrical Impedance Tomography
Tomography
Microchannels
Migration
Flow of fluids
Electrode
Fluid Flow
Electrodes
Maxwell equations
Measurement Techniques
Permittivity
Streamlines
Maxwell's equations
Inertia
Impedance
Conductivity
Nanoparticles
Multilayer

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Process Chemistry and Technology
  • Modelling and Simulation

Cite this

Ali Othman, N. T., Takei, M., & Obara, H. (2013). Application process tomography to measure particle migration in microchannel. In ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013 [V001T11A004] https://doi.org/10.1115/ICNMM2013-73129

Application process tomography to measure particle migration in microchannel. / Ali Othman, Nur Tantiyani; Takei, Masahiro; Obara, Hiromichi.

ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013. 2013. V001T11A004.

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

Ali Othman, NT, Takei, M & Obara, H 2013, Application process tomography to measure particle migration in microchannel. in ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013., V001T11A004, ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013, Sapporo, 16/6/13. https://doi.org/10.1115/ICNMM2013-73129
Ali Othman NT, Takei M, Obara H. Application process tomography to measure particle migration in microchannel. In ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013. 2013. V001T11A004 https://doi.org/10.1115/ICNMM2013-73129
Ali Othman, Nur Tantiyani ; Takei, Masahiro ; Obara, Hiromichi. / Application process tomography to measure particle migration in microchannel. ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013. 2013.
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