Time response properties on deformation velocity for a solid polymer electrolyte sensor

Abstract

This paper aims to clarify time response properties of a solid polymer electrolyte (SPE) sensor. SPE film has been attracted attention in wide range of fields, and it is expected to be used as soft actuators and sensors. SPE film can reversely convert electrical energy into mechanical energy. Moreover, SPE film is lightweight, flexible, and has good workability and air-stable output. Although authors have been investigated output characteristics of an SPE sensor, time response properties of the sensor have not been inspected. In the paper, to reveal time response properties of the SPE sensor, the sensor output behaviors for several deformation velocities are measured and evaluated. Maximum voltages in the transient response and output attenuations for constant deformation are analyzed. Results show that the attenuation characteristics depend on the sensor deformation velocity, and maximum voltages in the transient response are independent of deformation velocities.

Mechanoelectrical impedance of a carbide-derived carbon-based laminate motion sensor at large bending deflections

“…After 30 s, the voltage has decreased to approximately 60% of the initial value. A similar, but slightly less attenuated, response is also described by Otsuki et al [4]. The attenuation of the response to steep bending can be explained by creep-a common characteristic property of soft polymeric materials.…”

“…The charging of an electric double-layer on a high surface area electrode surface [1] or the electrochemical oxidation/reduction occurring in conductive polymer [1] or carbon nanotube (CNT) [2] electrodes generate volumetric effects, which in turn allow the use of iEAPs as actuators. iEAPs respond to bending by the formation of a voltage and current between the electrodes, and can therefore be used to detect motion [3,4]. In construction, some iEAP laminates are nearly indistinguishable from flexible electric double-layer capacitors (EDLCs) [5,6] and also therefore have the potential to be used as energy storage elements.…”

“…The mechanoelectrical transduction of conducting polymer laminates is also well known [8][9][10][11][12]. In addition, the mechanoelectrical properties of carbon nanotube (CNT) yarns [13] and solid polymer electrolyte sandwiched between CNT electrodes [4] have been investigated. However; there exist only a few papers about the same characteristics of carbon-polymer composites (CPCs) [3,14].…”

“…When a rigid elongation is attached to the free end of the iEAP, the resulting joint could be modeled as a constant curvature hinge with a reasonable accuracy [24]. Constant curvature has been applied to iEAPs by fitting them to surfaces of cylindrical objects with different diameters [25,26] or sliding them on the surface of a sample block between the straight and curved sections [4]. These methods ensure a constant curvature even in the case of a non-homogenous sensor material; however, a uniform change of curvature in time cannot be achieved.…”