A graphene accelerometer

This work presents an SU-8 clamped graphene nano-electro-mechanical-system (GNEMS) accelerometer. A suspended graphene membrane is circularly clamped by SU-8, with an additional proof mass made of either SU-8 or gold, located at the center of the membrane. This GNEMS accelerometer is approximately three orders of magnitude smaller than state of the art micro-electromechanical (MEMS) accelerometers with the diameter of the suspended graphene membrane being 3-10 μm and the proof mass diameter being 1-5 μm. Here, we present the fabrication, simulation, and experimental aperiodic calibration results of the GNEMS accelerometer, demonstrating a repeatable response to an input acceleration levels of ~1000-3000 g.