Wireless microsensors have enabled new ways to monitor our environment by allowing users to measure spaces previously off limits to research, such as toxic areas, vehicle components, or remote areas in the human body. Researchers, however, have been stymied by limited improvements in the quality of data and sensitivity of these devices stemming from challenges associated with the environments they operate in and the need for sensors with extremely small footprints.
Technology:
Researchers at Detroit’s Wayne State University have developed a new telemetry approach of designing microsensors with enhanced sensitivity and resolution. They are using isospectral parity-time-reciprocal scaling, or PTX symmetry, a "reader," paired with a passive microsensor, that receives highly sensitive radio frequencies in a miniaturized setup. The researchers were able to demonstrate this phenomenon in a telemetric microelectromechanical (MEMS)-based wireless pressure sensor system.
Commercial Applications:
- Bioimplants
- Wearable electronics
- Internet-of-Things (IoT) sensors
- Cyber-Physical Systems
Stage of Development:
- Prototype
Competitive Advantages:
- Enables large-scale networks of sensing devices with a small footprint
- Improved resolution and sensitivity compared to conventional microsensors
Patent Status
US20200012008A1
https://patents.google.com/patent/US20200012008A1/en?oq=US20200012008A1
References:
High-Sensitivity Wireless Displacement Sensing Enabled by PT-Symmetric Telemetry, Mehdi Hajizadegan, Maryam Sakhdari , Shaolin Liao, and Pai-Yen Chen, IEEE Transactions On Antennas And Propagation, Vol. 67, No. 5, MAY 2019, 3445-3449
Generalized parity–time symmetry condition for enhanced sensor telemetry, Pai-Yen Chen, Maryam Sakhdari, Mehdi Hajizadegan, Qingsong Cui, Mark Ming-Cheng Cheng, Ramy El-Ganainy and Andrea Alù, Nature Electronics, pages: 297–304 (2018)
Ultrasensitive, Parity–Time-Symmetric Wireless Reactive and Resistive Sensors, Maryam Sakhdari and Pai-Yen Chen, IEEE SENSORS JOURNAL, VOL. 18, NO. 23, DECEMBER 1, 2018, pages: 9548-9555
Sensitivity Enhancement by Parity-Time Symmetry in Wireless Telemetry Sensor Systems, Pai-Yen Chen, 32nd URSI GASS, Montreal, 19-26, August 2017
Ultrasensitive Telemetric Sensor Based on Adapted Parity-Time Symmetry, Maryam Sakhdari and Pai-Yen Chen, in: 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 9-14 July 2017, DOI: 10.1109/APUSNCURSINRSM. 2017