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Fig. 2 | Nano Convergence

Fig. 2

From: Chemical and biological sensors based on defect-engineered graphene mesh field-effect transistors

Fig. 2

a AFM analysis of graphene mesh along the line shown in the inset. b TEM image and FFT conversion of graphene mesh. c Raman spectra of typical graphene and graphene mesh. d Id–Vg curves and Dirac point variations of graphene mesh before and after N doping. e AES spectra of N-doped graphene and N-doped graphene mesh (top) before and (bottom) after vacuum annealing. ae Reproduced with permission from Ref. [30], © American Chemical Society

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