Imaging of flow pattern in micro flow channel using surface plasmon resonance

Yuzuru Iwasaki, Tatsuya Tobita, Kazuyoshi Kurihara, Tsutomu Horiuchi, Koji Suzuki, Osamu Niwa

研究成果: Article査読

10 被引用数 (Scopus)

抄録

We describe the visualization of the mixing and control of flow patterns in micro fluidic devices using a surface plasmon resonance (SPR) imaging sensor. We employed Kretschmann-type prism coupling SPR optics and an expanded laser diode light source via a single mode optical fibre. The reflected light was focused on a CCD camera. Two types of micro fluidic device were fabricated using photolithography and polymer imprinting a 2 mm wide, 100 νm high channel flow cell for the mixing and a slab channel device for flow control. We were able to observe mixing in the flow channel in real time with SPR imaging as the local refractive index change. Because the sensitivity of this system was limited within wavelength long distance from the gold surface, we could image the flow condition very near the channel wall. We also succeed in delivering the flow to a part of 4 × 4-array sensing area in a slab flow channel. These results will assist the development of integrated biosensors.

本文言語English
論文番号S11
ページ(範囲)3184-3188
ページ数5
ジャーナルMeasurement Science and Technology
17
12
DOI
出版ステータスPublished - 2006 12月 1

ASJC Scopus subject areas

  • 器械工学
  • 工学(その他)
  • 応用数学

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