Journal
SMART MATERIALS AND STRUCTURES
Volume 18, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/18/3/037001
Keywords
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Funding
- National Science Foundation [ECCS-0748540, DBI-0649798]
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A microfluidic device based on the capacitance Coulter counting principle to detect metal debris particles in lubricant oil is presented. The device scans each individual metal debris particle as they pass through a microfluidic channel by monitoring the capacitance change. We first proved the feasibility of using the capacitance Coulter counting principle for detecting metal particles in a fluidic channel. Next, we tested the microfluidic device with aluminum abrasive particles ranging from 10 to 25 mu m; the testing results show the microfluidic device is capable of detecting metal wear particles in low-conductive lubricant oil. The design concept demonstrated here can be extended to a device with multiple microchannels for rapid detection of metal wear particles in a large volume of lubricant oil.
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