Biomedical Engineering Reference
In-Depth Information
10.4
CONCLUSION: IPMNC SENSORS
AND TRANSDUCERS
Remarkable linear behavior of the membrane was observed specifically in the
positive direction of travel for each complete bending cycle. The hysteresis curve
showed linear, followed by another linear, and, lastly, parabolic trends as the sensor
was bent in a complete cycle. Higher order polynomial approximation seemed to
better describe the response of the sensor in negative displacement. It was also
observed that the sensor was face sensitive due to the capacitive nature of the sensor.
Finally, the use of ionic polymeric metal nanocomposites as sensors and energy-
harvesting transducers may be useful where simplicity and low cost are sought.
The main conclusion regarding IPMNC sensing and transduction capabilities is that
they are capacitive under low frequencies and resistive under high frequencies, thus
spanning the range of piezoelectric and piezoresistive sensors. Another remarkable
advantage with IPMNC sensors is that they are large-motion sensors despite PVDF
or PZT sensors.
