An integrated microchannel with continuous electrodynamic anti-adhesion capability for particle loss reduction in air-based microfluidic chips

Min Gu Kim, Yong Ho Kim, Chul Woo Park, Hong Lae Kim, Dong Hyun Kang, Jungho Hwang, Yong Jun Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In air-based microfluidic chips, particle adhesion to the walls of a microchannel deteriorates its performance and reliability due to structural changes such as channel clogging. In this study, an integrated anti-adhesion microchannel with a continuous electrodynamic anti-adhesion technique, used to detach particles adhered to the wall of a microchannel, was developed for applications using air-based microfluidic chips. Theoretical analysis of particle adhesion and electrodynamic anti-adhesion in a microfluidic channel was addressed based on computational fluid dynamics and electric simulation results. Particle loss due to adhesion to the wall of a microchannel was evaluated by the supply of airborne particles to the I-shaped microchannel and the serpentine microchannel. The reduction of particle loss using the electrodynamic anti-adhesion technique was then analyzed. In the I-shaped microchannel for the evaluation of penetration efficiency, most of the upstream particles penetrated the channel, making particle loss rare. The measured average penetration efficiency was 93.2%. On the other hand, heavy particle loss occurred in the curved section of the serpentine microchannel. The proposed technique was adopted to decrease particle loss. For the 1.28 μm polystyrene latex, the initial particle loss (0 V) was 94 ± 0.6%, while the particle loss with the proposed technique (3 kV at 1 kHz) was 78 ± 1.3%. The maximum reduction in particle loss was 17.9%. According to the experimental results, the proposed technique could enhance the sampling performance of air-based microfluidic chips.

Original languageEnglish
Pages (from-to)2517-2530
Number of pages14
JournalJournal of Adhesion Science and Technology
Volume27
Issue number23
DOIs
Publication statusPublished - 2013 Dec 1

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Electrodynamics
microchannels
Microchannels
Microfluidics
electrodynamics
adhesion
Adhesion
chips
air
Air
Particles (particulate matter)
Latexes
penetration
Polystyrenes
Computational fluid dynamics
plugging
Sampling
computational fluid dynamics
latex
upstream

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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title = "An integrated microchannel with continuous electrodynamic anti-adhesion capability for particle loss reduction in air-based microfluidic chips",
abstract = "In air-based microfluidic chips, particle adhesion to the walls of a microchannel deteriorates its performance and reliability due to structural changes such as channel clogging. In this study, an integrated anti-adhesion microchannel with a continuous electrodynamic anti-adhesion technique, used to detach particles adhered to the wall of a microchannel, was developed for applications using air-based microfluidic chips. Theoretical analysis of particle adhesion and electrodynamic anti-adhesion in a microfluidic channel was addressed based on computational fluid dynamics and electric simulation results. Particle loss due to adhesion to the wall of a microchannel was evaluated by the supply of airborne particles to the I-shaped microchannel and the serpentine microchannel. The reduction of particle loss using the electrodynamic anti-adhesion technique was then analyzed. In the I-shaped microchannel for the evaluation of penetration efficiency, most of the upstream particles penetrated the channel, making particle loss rare. The measured average penetration efficiency was 93.2{\%}. On the other hand, heavy particle loss occurred in the curved section of the serpentine microchannel. The proposed technique was adopted to decrease particle loss. For the 1.28 μm polystyrene latex, the initial particle loss (0 V) was 94 ± 0.6{\%}, while the particle loss with the proposed technique (3 kV at 1 kHz) was 78 ± 1.3{\%}. The maximum reduction in particle loss was 17.9{\%}. According to the experimental results, the proposed technique could enhance the sampling performance of air-based microfluidic chips.",
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An integrated microchannel with continuous electrodynamic anti-adhesion capability for particle loss reduction in air-based microfluidic chips. / Kim, Min Gu; Kim, Yong Ho; Park, Chul Woo; Kim, Hong Lae; Kang, Dong Hyun; Hwang, Jungho; Kim, Yong Jun.

In: Journal of Adhesion Science and Technology, Vol. 27, No. 23, 01.12.2013, p. 2517-2530.

Research output: Contribution to journalArticle

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AU - Kim, Min Gu

AU - Kim, Yong Ho

AU - Park, Chul Woo

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AU - Kang, Dong Hyun

AU - Hwang, Jungho

AU - Kim, Yong Jun

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