publication . Article . Other literature type . 2004

capacitive sensing of droplets for microfluidic devices based on thermocapillary actuation

Chen, Jian Z.; Darhuber, Anton A.; Troian, Sandra M.; Wagner, Sigurd;
Open Access
  • Published: 01 May 2004 Journal: Lab on a Chip, volume 4, page 473 (issn: 1473-0197, eissn: 1473-0189, Copyright policy)
  • Publisher: Royal Society of Chemistry (RSC)
Abstract
The design and performance of a miniaturized coplanar capacitive sensor is presented whose electrode arrays can also function as resistive microheaters for thermocapillary actuation of liquid films and droplets. Optimal compromise between large capacitive signal and high spatial resolution is obtained for electrode widths comparable to the liquid film thickness measured, in agreement with supporting numerical simulations which include mutual capacitance effects. An interdigitated, variable width design, allowing for wider central electrodes, increases the capacitive signal for liquid structures with non-uniform height profiles. The capacitive resolution and time...
Subjects
free text keywords: Caltech Library Services, Resistive touchscreen, Image resolution, Microfluidics, Electrode, Capacitive sensing, Response time, Chemistry, Mutual capacitance, Drop (liquid), Analytical chemistry, Electronic engineering, Journal Article, Research Support, U.S. Gov't, Non-P.H.S.
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Article . 2004
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Article . 2004
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http://dx.doi.org/10.1039/b315...
Other literature type . 2004
Provider: Datacite
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publication . Article . Other literature type . 2004

capacitive sensing of droplets for microfluidic devices based on thermocapillary actuation

Chen, Jian Z.; Darhuber, Anton A.; Troian, Sandra M.; Wagner, Sigurd;