PVDFTrFEBased Stretchable Contact and NonContact Temperature Sensor for ESkin Application Development of stretchable electronics has been driven by key applications such as electronics skin for robotic or prosthetic. Mimicking skin functionalities imposes at a minimal level: stretchability, pressure, and temperature sensing capabilities. While the research on pressure sensors for artificial skin is extensive, stretchable temperature sensors remain less explored. In this work, a stretchable temperature and infrared sensor has been developed on a polydimethylsiloxane substrate. The sensor is based on poly(vinylidene fluoridetrifluoroethylene) (PVDFTrFE) as a pyroelectric material. This material is sandwiched between two electrodes. The first one consists of aluminium serpentines, covered by gold in order to get electrical contact and maximum stretchability. The second one is based on poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) that has shown good electrical compatibility with PVDFTrFE and provides the stretchability of the top electrode. Without poling the PVDFTrFE, sensor has shown a sensitivity of around 7 pF.xc2xb0C1 up to 35% strain without any change in its behaviour. Then, taking advantage on infrared absorption of PEDOT:PSS, a poled device has shown a pyroelectric peak of 13 mV to an infrared illumination of 5 mW at 830 nm. This stretchable device valuably allows an electronic skin (eskin) use for contact and more importantly noncontact thermal sensing.

A Flexible Tactile Sensor Array Based on Conductive Rubber In this paper, a novel flexible tactile sensor array based on conductive rubber is presented. Compared with other research results, we use the materials with complete flexibility to fabricate the soft sensors. The sensing prototype includes polydimethylsiloxane (PDMS) as the sealing layers and conductive rubber as sensing layer. This proposed tactile sensor can measure the contact pressure under wrapping one curved surface. In our study, we developed a skinlike tactile sensor array from three aspects: design procedures, fabrication techniques and test results via taking one 8xc3x978 sensor array for example, which is a sandwich structure and the sensing material was laminated into a thin encapsulation film with 2mm in thickness. Furthermore, the sensor overcomes the fabrication complexity, chemical unsafety and environmental instability problems to some extent. In the end, the final experimental demonstration verify the feasibility of the sensor array with discrete sensing elements in measuring the tactile force via matlab.