2D materials 9 2d material 8 Electrochemical electrodes 3 Graphene 3 Van der Waals forces 3 density functional theory 3 graphene 3 2D material 2 Conducting polymers 2 Cross sensitivity 2 Density functional theory 2 Diffusion barriers 2 Electrolytes 2 Field effect transistors 2 Gate electrodes 2 Gold deposits 2 Ion-sensitive field effect transistors 2 Ionic strength 2 Nitrides 2 PEDOT:PSS 2 Performance 2 Poly(3,4-ethylene dioxythiophene): poly(styrene sulphonic acid) 2 Poly(styrene sulfonic acid) 2 Pseudo reference electrodes 2 Reference electrodes 2 Refractory metal compounds 2 Scanning tunneling microscopy 2 Silicon compounds 2 Silicon nanowire field-effect transistors 2 Styrene 2