Figure 10.

Flexible substrates for biosensors, (a–c) PDMS- and PEDOT:PSS-based pressure sensor [139], (d) wearable sweat sensor based on MXene [143], Reproduced with permission from [143]. John Wiley & Sons, Inc., 2019, (e) fully fabricated liquid heterojunction device, consisting of an ionic liquid active channel and GaInSn source/drain electrodes [144], (f) graphene-based wireless nanosensor [145], (g) biotransfer of the nanosensing architecture onto the surface of a tooth [145], (h) magnified schematic of the sensing element, illustrating wireless readout [145], (i) binding of pathogenic bacteria by peptides self-assembled on the graphene nanotransducer [145].