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Research from Eastern Michigan University has provided new data on sensor research
March 11th, 2009
According to recent research from the United States, "A simple and useful modification to the common method of acquiring the impedance spectrum of modified interdigitated electrodes consists of including an appropriately sized induction coil connected in parallel with the interdigitated electrode (IDE)."
"The resulting impedance behavior of the IDE/coil combination transforms the customary Bode plot of total impedance versus frequency data from a broad, complex curve to a simple resonance peak which can serve as the basis for a sensor output signal. The exact frequency and amplitude of the impedance resonance peak are a function of both the fixed induction characteristics...
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Source: Electronics Newsweekly (2009-03-11)