Palladium/palladium oxide coated electrospun fibers for wearable sweat pH-sensors.

ABSTRACT: The work describes the development of a flexible, hydrogel embedded pH-sensor that can be integrated in inexpensive wearable and non-invasive devices at epidermal level for electrochemical quantification of H⁺ ions in sweat. Such a device can be useful for swift, real time diagnosis and for monitoring specific conditions. The sensors' working electrodes are flexible poly(methyl methacrylate) electrospun fibers coated with a thin gold layer and electrochemically functionalized with nanostructured palladium/palladium oxide. The response to H⁺ ions is investigated by cyclic voltammetry and electrochemical impedance spectroscopy while open circuit potential measurements show a sensitivity of aprox. -59 mV per pH unit. The modification of the sensing interface upon basic a

SUBMITTER: Diculescu VC 

PROVIDER: S-EPMC6586619 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature