Microfluidic Dispensing Device Using Wettability Gradient and Electrowetting

• Yasuda Takashi

  Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology

• Harada Shouhei

  Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology

• Daimon Katsuya

  Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology

Abstract

We have designed a novel microfluidic dispensing device using automatic droplet transportation on a wettability gradient surface that is sequentially followed by electrowetting-based liquid handling. While a droplet moves along the wettability gradient in a main channel, a portion of the droplet is drawn into a side channel and stored in a reservoir temporarily. Next, the stored liquid is dispensed into a mixing channel when a voltage is applied between two electrodes. The fabricated device succeeded in dispensing two liquids of different nanoscale volumes after extracting them from a microscale volume droplet.

Journal

• IEEJ Transactions on Sensors and Micromachines

  IEEJ Transactions on Sensors and Micromachines 128 (3), 75-79, 2008

  The Institute of Electrical Engineers of Japan

Keywords

• wettability gradient
• electrowetting
• dispenser
• microfluidic device
• droplet handling

Details

• CRID: 1390001204459967360
• NII Article ID: 10021135018
• NII Book ID: AN1052634X
• DOI: 10.1541/ieejsmas.128.75
• ISSN: 13475525
• ISSN: 13418939
• NDL BIB ID: 9400678
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9400678
• Web Site: http://www.jstage.jst.go.jp/article/ieejsmas/128/3/128_3_75/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed