Fig. 5: Stability of graphene μGS devices in blood plasma.

Two of the four HSQ-Si3N4 encapsulated devices (indicated in red) fail after 32 h of exposure to plasma and the other two (indicated in blue) fail after 46 h, giving an average Tfail of 39 h. The yellow background denotes when the external magnetic field is applied and the pink background denotes when the external magnetic field is removed