Ultrasensitive telemetric sensor based on adapted parity-time symmetry

We propose and experimentally investigate a new parity-time (PT)-symmetric wireless sensor system, whose equivalent circuit topologically satisfies the time-reversal and spatial-inversion symmetry. We demonstrate that an adapted PT-symmetric wireless sensor can enable high quality-factor (Q-factor) and great sensitivity in detecting physiological and environmental variations, overcoming the long-standing challenge in optimizations of Q-factor and sensitivity of miniature wireless sensors. Our results may ever have an impact on many wireless sensing, imaging and monitoring systems, particularly benefiting the emerging micromachined sensors, bioimplants, wearable devices, and internet-of-things applications.