Figure 2
From: Bioelectronic interfaces by spontaneously organized peptides on 2D atomic single layer materials
Peptide nanostructures on GFETs and their corresponding conductivity characteristics.
(a) A schematic of peptide assembly on a GFET. A droplet of peptide aqueous solution is placed on a GFET and then dried by nitrogen blow. (b) AFM images of GrBP5 peptides on GFETs with various peptide coverages from 26% to 88%. (c) The conductivity vs. back-gate voltage for as-prepared GFET (black) and graphene FETs with different peptide coverages corresponding to AFM images in (a). (d) AFM of GrBP5-M2 on GFETs with coverages of 30% and 96%. (e) The conductivity vs. back-gate voltage for GFETs with GrBP5-M2. The marks in the plots represent experimental data points and solid lines represent fitted curves. (f) A schematic showing spatial doping of graphene by peptide nanowires. (g) Resistance vs. gate voltage of GFET with 26% peptide coverage shows a good agreement in fitting with two peak components.
