Wearable electronic nose sensor based on PVDF/ carbon black electrospun layers

An electric nose (E-nose) has received considerable attention due to its applications which were defined as the analysis of food and agricultural products, medical fields, monitoring the environment, identifying waste and toxic substances, robotic science, and security affairs. The aim of this work is the enhancement of measurement accuracy of wearable electronic nose sensors for gas sensing. In this method, by adding carbon black nanoparticles to Poly[vinylidene fluoride] electrospinning solution, electrical resistance decreased from 800KW in a layer with a thickness that is estimated to be around 14µm, to 310Kw. The green apple flavor with Ethyl valerate compounds was detected as a model odorant. The electrical resistance of the electrospun layer and morphology of the electrospun layers were measured by an analog discovery impedance analyzer and SEM, respectively. The ultimate goal of work in this arena is to make a wearable electronic nose that is portable, fast, and inexpensive, therefore, suitable for use in textile, food applications, and examination rooms, making it facile as a diagnostic tool.