Abstract
This paper describes an evaluation study on frequency characteristics of Ionic polymer-metal composite (IPMC) sensors with Li^+ and Na^+. IPMC was composed of Nafion N117 as an ion exchange membrane and 5times gold plating electrode. To understand the time-domain frequency characteristics of the sensors, the sensor signals were evaluated by wavelet analysis method in air. As a result, the signals with Na^+ was larger than those with Li^+. It is indicated that the IPMC sensor with smaller cations has a kind of noise-reduction effect more effectively than that with the large cations because the size of cation affected the driving characteristics of the IPMC sensors.
