Novel Microsensor Design to Improve Data Collection From Hard-To-Monitor Environments

Case ID:


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.




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




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

Patent Information:
For Information, Contact:
Nicole Grynaviski
Commercialization Principal
Wayne State University
Pai-Yen Chen
Maryam Sakhdari
Mehdi Hajizadegan
Mark Ming-Cheng Cheng