Characterization and Comparison of Biodegradable Printed Capacitive Humidity Sensors.

ABSTRACT: Flexible and biodegradable sensors are advantageous for their versatility in a range of areas from smart packaging to agriculture. In this work, we characterize and compare the performance of interdigitated electrode (IDE) humidity sensors printed on different biodegradable substrates. In these IDE capacitive devices, the substrate acts as the sensing layer. The dielectric constant of the substrate increases as the material absorbs water from the atmosphere. Consequently, the capacitance across the electrodes is a function of environmental relative humidity. Here, the performance of polylactide (PLA), glossy paper, and potato starch as a sensing layer is compared to that of nonbiodegradable polyethylene terephthalate (PET). The capacitance across inkjet-printed silver electrodes is measure

SUBMITTER: Wawrzynek E 

PROVIDER: S-EPMC8512811 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature