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CEA-Leti developed, validated and fabricated two demonstrators
Flexible RFID chip
The first demo leverages an RFID chip featuring temperature and stress sensors, integrated into an ultra-thin, flexible label. The UHF RFID chip is commercialized by the company Asygn under the name AS3213. The latter is applied to a flexible substrate featuring an antenna leveraging low-cost printing technologies developed by CEA-Liten. An RFID testing system enabled successful validation of the demo’s functionality.
Flexible strain sensor
The second demo includes a strain sensor based on doped crystalline
(100) silicon piezoresistive effect. The sensor is integrated within a small
flexible label. When stress is applied on the die, resistances change due to
piezoresistive effects. By calibration of the sensor, it is possible to extract
strain value from output voltage measured on a Wheatstone bridge.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.