Fig. 5From: Chemical and biological sensors based on defect-engineered graphene mesh field-effect transistorsCyclic Id–Vg characteristics of (a–c) GM-FETs and (d–f) Gr-FETs: a, b, d, e Id–Vg characteristic curves during the (a, d) first cycle and (b, e) fifth cycle; (c, f) corresponding plots of Dirac point voltages during five cycles. a–f Reproduced with permission from Ref. [32], © American Chemical SocietyBack to article page