Fig. 3
From: Chemical and biological sensors based on defect-engineered graphene mesh field-effect transistors
a, b Sensitivity measurements of Pd-Gr and Pd-GM sensors at different H2 gas concentrations. c Sensitivities as a function of the square root of H2 concentration, and d reciprocal response time (1/τ) in relation with H2 concentration. e, f Schematic of electron transport mechanism for Pd on graphene and graphene mesh. a–d Reproduced with permission from Ref. [31], © IOP Publishing