fig8

Figure 8. Sensors for saliva monitoring and their performance. (A) Physiological mechanism and application scenarios of smart bioelectronic nanomesh face masks for monitoring cortisol in saliva, as well as the electrochemical impedance spectroscopy plot of this sensor and the relationship between the sensor’s relative resistance change rate and cortisol concentration. Reproduced with permission^[210]. Copyright 2025, American Chemical Society; (B) Mouthguard biosensor integrated with wireless amperometric circuit board and current response of this sensor to different concentrations of uric acid. Reproduced with permission^[211]. Copyright 2015, Elsevier B.V; (C) Application scenarios and structural details of the smart bioelectronic pacifier, and the change of sodium - to - potassium ion ratio in saliva over time. Reproduced with permission^[212]. Copyright 2022, Elsevier B.V. DTSP: Dithiobis(succinimidyl propionate); C-Mab: cortisol monoclonal antibodies; EA: ethanolamine; BSA: bovine serum albumin; PPD: polymerized o-phenylenediamine.