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Event Details

  • Tuesday, February 26, 2019
  • 10:45 - 11:15

Ultra-Sensitivity in PT-Symmetric Non-Hermitian Radio-Frequency Biosensors

Internet-of-things (IoTs) composed of a large number of radio-frequency (RF) microsensors, with advantages like low cost and extreme miniaturization, could ever have an impact on healthcare, automotive, and industrial landscapes. However, given by their small physical sizes, improving the detection limit of compact, fully-passive RF wireless sensors is often hindered by the low quality-factor (Q-factor) and poor sensitivity. In the first part of my talk, I will discuss how the concept of parity-time (PT) symmetric non-Hermitian Hamiltonian, first proposed in quantum mechanics, can be applied to electromagnetic systems for realizing miniature RF biosensors with ultrahigh Q-factor and singularity-enhanced sensitivity. In the second part of my talk, I will present novel higher-order PT-symmetric telemetric systems, which could provide sensitivity far beyond the state-of-the-art wireless intracular sensors and could achieve the reliable wireless power transfer for implantable and wearable devices. ​