Two-terminal longitudinal hotwire sensor for monitoring the position and speed of advancing liquid fronts in microfluidic channels

Kee Suk Ryu, Kashan Shaikh, Edgar Goluch, Chang Liu*

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number104104
JournalApplied Physics Letters
Volume88
Issue number10
DOIs
StatePublished - Mar 20 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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