Fig. 15
From: Field effect transistor based wearable biosensors for healthcare monitoring
a Schematic of the application for selective ion detection in artificial saliva ISFET (reprinted with permission from Ref. [21] Copyright 2019 Elsevier). b Schematic representation of a G-FET device utilized for biosensing (reprinted with permission from Ref. [142] Copyright 2020 Willey). c The device fabrication processes and device tests for evaluating the electronic features of the bare Lg-GFETs (reprinted with permission from Ref. [81] Copyright 2021 American Chemical Society). d Schematic illustration of the extended-gate-type OFET sensor for oxytocin detection (reprinted with permission from Ref. [40] Copyright 2022 RSC)