Electronic Materials report a hybrid printed electronic sensor system manufactured by screen printing directly onto the glass surface.
(From Electronic Material web page): The electronic system contains a sensor capable of detecting water, an electrochromic display, conductors, a silicon chip providing the power supply through energy harvesting of electromagnetic radiation, and a silicon-based microcontroller responsible for monitoring the sensor status and the subsequent update of the corresponding display segment.
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Electron. Mater., Volume 2, Issue 4 (December 2021) – Cover story