Parallel and passive distribution to arrayed microwells using self-regulating pinched flow

Kentaro Kawai, Masaki Kanai, Tatsuya Munaka, Hirohisa Abe, Akira Murakami, Shuichi Shoji

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    A parallel and passive (without any actuators or electrodes) cell distribution method for a cellular diagnostic microwell array was developed. This method can be used to simultaneously distribute cells evenly to arrayed microwells only by introducing cell suspensions into the inlet. To regulate the dispersion of the number of distributed cells into each microwell, we conceived a novel concept, the self-regulating pinched flow. The self-regulating pinched flow is realized in a functional microchannel, which consists of center micropillar colonnades and side channels. Computational fluid dynamics (CFD) simulations were carried out to optimize the design of the pinching area. We developed a prototype device that can be used to successfully distribute the beads uniformly in eight parallel microwells. The coefficient of variation (CV) of the distributed beads in the microwells was 29.3%.

    Original languageEnglish
    Pages (from-to)281-288
    Number of pages8
    JournalSensors and Materials
    Volume20
    Issue number6
    Publication statusPublished - 2008

    Fingerprint

    automatic control
    Microchannels
    Suspensions
    Computational fluid dynamics
    Actuators
    Electrodes
    Computer simulation
    cells
    beads
    computational fluid dynamics
    microchannels
    actuators
    prototypes
    electrodes
    coefficients
    simulation

    Keywords

    • Cellular diagnostics
    • High throughput screening
    • Microwell array
    • Parallel distribution
    • Passive distribution
    • Self-regulating pinched flow

    ASJC Scopus subject areas

    • Instrumentation
    • Materials Science(all)

    Cite this

    Kawai, K., Kanai, M., Munaka, T., Abe, H., Murakami, A., & Shoji, S. (2008). Parallel and passive distribution to arrayed microwells using self-regulating pinched flow. Sensors and Materials, 20(6), 281-288.

    Parallel and passive distribution to arrayed microwells using self-regulating pinched flow. / Kawai, Kentaro; Kanai, Masaki; Munaka, Tatsuya; Abe, Hirohisa; Murakami, Akira; Shoji, Shuichi.

    In: Sensors and Materials, Vol. 20, No. 6, 2008, p. 281-288.

    Research output: Contribution to journalArticle

    Kawai, K, Kanai, M, Munaka, T, Abe, H, Murakami, A & Shoji, S 2008, 'Parallel and passive distribution to arrayed microwells using self-regulating pinched flow', Sensors and Materials, vol. 20, no. 6, pp. 281-288.
    Kawai, Kentaro ; Kanai, Masaki ; Munaka, Tatsuya ; Abe, Hirohisa ; Murakami, Akira ; Shoji, Shuichi. / Parallel and passive distribution to arrayed microwells using self-regulating pinched flow. In: Sensors and Materials. 2008 ; Vol. 20, No. 6. pp. 281-288.
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