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Two-terminal longitudinal hotwire sensor for in-line monitoring of sub-nanoliter volume in microfluidic channels

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5 Author(s)
Ryu, Kee Suk ; Micro & Nanotechnology Lab., Illinois Univ., Urbana, IL ; Shaikh, Kashan ; Goluch, Edgar ; Mathias, P.
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We report a simple and practical sensor for monitoring both the absolute position and advancing speed of liquid front in a microfluidic channel. The sensor consists of a longitudinal hot wire element - a two-terminal electrical device, with its length spanning the entire channel. The design, materials, fabrication method, and use of this sensor are extremely simple. Characterization results are presented

Published in:

Sensors, 2005 IEEE

Date of Conference:

Oct. 30 2005-Nov. 3 2005