Desenvolvimento de um sensor de toque “piezoiônico” transparente e conformal

Abstract

The project presented here consists on the analysis for the development of a novel type of touch sensor employing a polyurethane hydrogel. This material possesses interesting features such as transparency and flexibility, which can be used in the development of touch sensors with these characteristics. Because of the malleability of the material, it can be easily applied in the biomedical field, since it adjusts its shape to the surface of the skin, for example. A review on the applications of the hydrogel as a sensor is presented, as well as a review on other technologies that allow the development of transparent and/or flexible sensors. The result of experiments performed with the gel in different conditions is also discussed. From the analysis of the data, the best settings are adopted in order to obtain the best signal amplitude for pressure detection. The manipulations required for the signal to be used in an electrical circuit are also analyzed.