Printed Flexible Pressure Sensor Based On The Composite Dielectric Materials

The next-generation application of pressure sensors is gradually being extended to include electronicartificial skin?e-skin?, wearable devices, humanoid robotics and smart prosthetics. In these advancedapplications, high sensing capability is an significant feature for high performance.In previous studies, some special elastomeric interlayers have been applied to improve sensitivity,but the improvement of sensitivity not significantly increased. In the current study, a simple printing flexible electrode process has been used for constructing the sensor, and an interlayer is employed comprising elastomeric composites filled with carbon nanotube and the dielectric composite layer material copy and metastasis the structure of silicon.By increasing the composite dielectricconstant induced by compression at highcarbon tube concentration. We explore the relation between types of carbon tubes and the performance of the device. We also explore the effect of a carbon nanotubes filling quantity on dielectric property of the composite. Meanwhile, we contrast the property of the carbon nanotube with other nanotubes.This article explores the results found that:?1? The composite young's modulus of composites also increased with the filling quantity of carbon nanotubes.?2? Filing composite material with large aspect ratio of carbon nanotubes, dielectric constant change show more obvious increased by compression. TNMH1 composite dielectric constant increased to 740% by compression, while the dielectric constant of composites?TNMH7? increased 50%?3? the PDMSis used low temperature plasma treatment and surfactant modification, we can print conductive ink on it and achieve flexible electrode. We get the capacitive sensor used by composite?TNMH1? dielectric layer, the sensitivity of the sensor can achieve 2.9 kPa^-1, response time is 50 ms.Finally, the flexible pressure sensor with high sensitivity is achieved and applied into the human physiological signal detection, stress testing, the object shape, small stress measurement and knuckles fluctuations. it has been possible to achieve a maximum sensitivity of 2.9 kPa^-1. Theimprovement in sensitivity did not sacrifice or undermine the other features of the sensor. The sensor hasbeen readily integrated onto an adhesive bandage and has been successful in detecting human movements.