Silicone/Graphene Nanoplatelets based Flexible Strain Sensor for Wearable Electronics

This study presents the development of strain sensors using two silicone rubbers (Ecoflex and polydimethylsiloxane) with graphene nanoplatelates (GNP). The polymer and graphene nanoplatelets capitalize on the elasticity of polymer and the electrical conductivity of GNP, making it for enhanced electrical response. This work presents the fabrication, characterization, and performance of both flexible strain sensors, elucidating their mechanical behavior and sensing capabilities by unifying flexibility, conductivity, and responsiveness. Both sensors displayed flexibility and linear change in resistance, highlighting their sensitivity. Comparative analysis revealed the Ecoflex/GNP sensor’s higher gauge factor, indicating elevated sensitivity for strain detection. The proposed Ecoflex/GNP and PDMS/GNP-based strain sensors are suitable for wearable electronics applications.