Flexible and robust laser-induced graphene heaters photothermally scribed on bare polyimide substrates Bobinger, Marco Romero Maldonado, Francisco Javier Salinas Castillo, Alfonso Becherer, Markus Lugli, Paolo Morales Santos, Diego Pedro Rodríguez Santiago, Noel Rivadeneyra Torres, Almudena CNC laser Flexible Graphene film heater Laser-induced graphene Laser ablation Micro-hotplate Polyimide We demonstrate the feasibility of fabricating cost-effective and robust laser-induced graphene (LIG) flexible heaters with an innovative technique based on the photothermal production of graphene with a foam-like morphology. The produced devices are precisely defined on a bare polyimide substrate without the need of photomasks by employing a computer numerical control (CNC) driven laser diode. The electrical properties of the LIG-based heaters can be tailored by adjusting the laser power. The resulting conductive material exhibits electrical and chemical properties which are similar to the ones for graphene such as a negative temperature coefficient of −0.46 m°C−1 and a maximum operating temperature of around 400 °C. The developed heaters can outperform the existing emerging technologies showing a very rapid and stable response up to 225 °C with the extra features of flexibility, biocompatibility, and environmental friendliness. 2021-12-10T10:10:24Z 2021-12-10T10:10:24Z 2018-12-02 info:eu-repo/semantics/article http://hdl.handle.net/10481/71980 https://doi.org/10.1016/j.carbon.2018.12.010 eng info:eu-repo/grantAgreement/EC/H2020/-MSCA-IF-2017-794885-SELFSENS info:eu-repo/semantics/openAccess