| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 738695 | Sensors and Actuators A: Physical | 2008 | 5 Pages |
Abstract
A MEMS-based chemical concentration sensor for monitoring and controlling the methanol to water ratio in a Direct Methanol Fuel Cell (DMFC) is described. This sensor is based on a vacuum packaged resonant microtube and on-chip platinum temperature sensor to measure the density of a fluid. Using the density and temperature output the methanol concentration is determined. The performance of the sensor over temperature, concentration and in the presence of formic acid by-products is examined. Additional test results and applications for other fuels and biofuels are presented including ethanol, ethylene glycol, butanol, gasoline and diesel fuel.
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Authors
D. Sparks, K. Kawaguchi, M. Yasuda, D. Riley, V. Cruz, N. Tran, A. Chimbayo, N. Najafi,