Graphene foam – polymer based electronic skin for flexible tactile sensor

[Display omitted] •Graphene foam is synthesized via chemical vapor deposition (CVD).•Pores of graphene foam are filled with the help of polymer to form electronic skin.•Two kind of pressure sensors are fabricated: static and dynamic.•Dynamic pressure sensors are more efficient compared to static pressure sensors. Graphene foam (GF) infiltrated with polymer attracts researchers toward practical pressure sensing applications, especially tactile sensors. However, interface between polymer and graphene plays a vital role under a specific type and amount of pressure. Herein, we have investigated the impact of static and dynamic pressure upon GF-polymer. A recovery time of ∼ 0.1 s is detected during static pressure sensing. Unlike static pressure, GF-polymer samples are highly sensitive to dynamic load, and a quick recovery time ∼ 0.06 s is detected. The sensitivity of the dynamic pressure sensor ∼ 1.17 ± 0.1 Pa−1 is almost double compares to the sensitivity of the static pressure sensor ∼ 2.1 ± 0.3 Pa−1. Technologically, tactile sensors exert pressure in different forms and GF-polymer is an excellent choice for forming a pressure sensor. The present study will help develop efficient tactile sensors.