Temperature Sensors Manufactured from Edible Materials Intended for Oral Cavity Operation

Abstract Following the circular economy concept, all areas of science, including electronics, require individual approach. The green electronics approach implies processing natural based materials for development electronic components even single use, so that waste does not exist. This paper describes production thermistors from 3 different types edible materials, their testing in laboratory conditions, as well application measuring temperature human oral cavity. To make thermistor, three were used (carrageenan, polyvinyl alcohol and apple pomace-based). After fabrication, poured into molds. Aluminium foil contacts placed electrical characterization could be performed. Several parameters measured: resistance (R), impedance (Z) phase angle (θ) a function frequency. In order to determine whether have positive or negative coefficient sensitivity, measurements conducted at temperatures: 25 ℃ (room temperature), 37 (human body 50 ℃. demonstrated behaviour. Additionally, it was pomace-based thermistor can successfully measure healthy volunteer's temperature. Graphical