ZB 06 - Nanoelectrochemistry (W.Nogala)

Optical readout of moisture in sand employing bipolar electrochemistry

Author(s): Gupta, Bhavana and Suchomski, Pawel and Melvin, Ambrose Ashwin and Linfield, Steven and Opallo, Marcin and Nogala, Wojciech
Title: Optical readout of moisture in sand employing bipolar electrochemistry
Abstract: The fast and wireless estimation of moisture in sand and other bulk usually requires high-tech instrumentation and computation. To the complexity of such systems, we have employed bipolar as a fast, straightforward, and cost-effective method wirelessly produce an optical signal. An electric field generated moist sand is used to polarize an immersed light-emitting diode triggering an electrochemical reaction and causing a current to Therefore, the bipolar activation of the LED by a threshold field creates an optically readable moisture sensor. The light intensity depends on two factors: the amount of moisture and salt concentration. As two stimuli control the light emission, the can be considered as an AND logic gate, which is expected to open possibilities in wireless and user-friendly moisture sensors.
Pages: 107329
Journal: ELECTROCHEMISTRY COMMUNICATIONS
Publisher: ELSEVIER SCIENCE INC
Addres: STE 800, 230 PARK AVE, NEW YORK, NY 10169 USA
Volume: 140
ID: WOS:000863242800004
Year: 2022
URL: https://doi.org/10.1016/j.elecom.2022.107329
DOI: 10.1016/j.elecom.2022.107329