Stand-alone microfluidic system using partly disposable PDMS microwell array for high throughput cell analysis

Kasumi Miyamoto, Ryo Yamamoto, Kentaro Kawai, Shuichi Shoji

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    This paper presents a stand-alone microfluidic system composed of a reusable valve control part and a disposable microwell-array-embedded fluidic chip for high throughput cell analysis. The valve control part and the fluidic chip are fabricated separately and combined together in experiments. Since valve control of the device and fluid injection are driven by solenoid actuators and electro-osmosis (EO) micropumps, respectively, access-tube-free system is achieved. Utilization of addressable valve control method makes possible to drive 25 on-chip hydraulic valves by 10 solenoid actuators. The prototype fluidic chip with 16 microwell array and 4 reagent injection ports on top of palm-top size substrate (30 × 40 mm) is fabricated and integrated to make a replacement of multi-kind reagents inside the system. With this system, other functional fluidic networks can be replaced easily. After testing on/off switching performances of on-chip valves, multi-reagent exchange trial is carried out, revealing precise reagent injection of ten-nanoliter order to each microwell. The proposed system also shows high performance of power consumption, realizing introduction of two reagents to 16 microwells with 11.9 Wh.

    Original languageEnglish
    Pages (from-to)133-140
    Number of pages8
    JournalSensors and Actuators, A: Physical
    Volume188
    DOIs
    Publication statusPublished - 2012 Dec

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    Keywords

    • Access-tube-free
    • Addressable valve control system
    • Hydraulic valve
    • Partly disposable
    • Stand-alone

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials
    • Metals and Alloys
    • Surfaces, Coatings and Films
    • Instrumentation

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