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On-Line Testing of Lab-on-Chip Using Digital Microfluidic Compactors

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2 Author(s)
Yang Zhao ; Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC ; Krishnendu Chakrabarty

Dependability is an important system attribute for microfluidic lab-on-chip devices. On-line testing offers a promising method for detecting defects, fluidic abnormalities, and bioassay malfunctions during chip operation. However, previous techniques for reading test outcomes and analyzing pulse sequences are cumbersome, sensitive to the calibration of capacitive sensors, and error-prone. We present a built-in self-test (BIST) method for on-line testing of digital microfluidic lab-on-chip. This method utilizes microfluidic compactors based on droplet-based AND gates, which are implemented using digital microfluidics. Dynamic reconfiguration of these compactors ensures low area overhead and it allows BIST to be interleaved with bioassays in functional mode.

Published in:

2008 14th IEEE International On-Line Testing Symposium

Date of Conference:

7-9 July 2008