Ultra-sensitive Parity-Time Symmetry based Graphene FET (PTS-GFET) Sensors

A novel ultra-sensitive Parity-Time symmetry based Graphene FET (PTS-GFET) sensor is studied for gas concentration detection. The PTS-GFET sensor effectively integrates the sensitivity of the PT symmetry around its Exceptional Point (EP) and the tunability of the GFET conductance. The change of GFET conductance with the gas concentration can be brought back to the EP of the PTS-GFET by tuning the gate voltage on the GFET. Thus, the applied gate voltage indicates the gas concentration. The minimum detectable gas concentration has been derived and estimated based on the experimental data, which shows that PTS-GFET can detect gas concentration below 50 ppb.

[1]  Mei Song Tong,et al.  Noninvasive Glucose Sensor Based on Parity-Time Symmetry , 2019, Physical Review Applied.

[2]  Ronald J. Vernon.  High-Power Microwave Transmission and Mode Conversion Program , 2015 .

[3]  A. C. Raptis,et al.  Compressive sampling in active and passive millimeter-wave imaging , 2011, 2011 International Conference on Infrared, Millimeter, and Terahertz Waves.

[4]  Shaolin Liao,et al.  An efficient iterative algorithm for computation of scattering from dielectric objects. , 2011, Optics express.

[5]  Wai Lam Chan,et al.  A single-pixel terahertz imaging system based on compressed sensing , 2008 .

[6]  Pai-Yen Chen,et al.  High-Sensitivity Wireless Displacement Sensing Enabled by PT-Symmetric Telemetry , 2019, IEEE Transactions on Antennas and Propagation.

[7]  Shaolin Liao.  Fast Computation of Electromagnetic Wave Propagation and Scattering for Quasi-cylindrical Geometry , 2020, ArXiv.

[8]  R. Vernon,et al.  The Near-Field and Far-Field Properties of the Cylindrical Modal Expansions with Application in the Image Theorem , 2006, 2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics.

[9]  On Fast Computation of Electromagnetic Wave Propagation through FFT , 2006, 2006 7th International Symposium on Antennas, Propagation & EM Theory.

[10]  Spectral-domain MOM for Planar Meta-materials of Arbitrary Aperture Wave-guide Array , 2019, 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO).

[11]  Aggelos K. Katsaggelos,et al.  Compressive passive millimeter-wave imaging , 2011, 2011 18th IEEE International Conference on Image Processing.

[12]  Shaolin Liao,et al.  A real-time heart rate analysis for a remote millimeter wave I-Q sensor , 2011, IEEE Transactions on Biomedical Engineering.

[13]  Shaolin Liao,et al.  A high-efficiency four-frequency mode converter design with small output angle variation for a step-tunable gyrotron , 2008, 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves.

[14]  Aggelos K. Katsaggelos,et al.  Passive millimeter-wave imaging with compressive sensing , 2012 .

[15]  A. C. Raptis,et al.  A Novel Interferometric Sub-THz Doppler Radar With a Continuously Oscillating Reference Arm , 2014, IEEE Transactions on Terahertz Science and Technology.

[16]  Shaolin Liao,et al.  A novel interferometric millimeter wave Doppler radar architecture , 2013, 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC).

[17]  R. J. Vernon,et al.  Sub-THz Beam-Shaping Mirror System Designs for Quasi-optical Mode Converters in High-power Gyrotrons , 2007 .

[18]  Nikhil Koratkar,et al.  High sensitivity detection of NO2 and NH3 in air using chemical vapor deposition grown graphene , 2012 .

[19]  Aggelos K. Katsaggelos,et al.  Compressive sampling in passive millimeter-wave imaging , 2011, Defense + Commercial Sensing.

[20]  R. J. Vernon,et al.  A FOUR-FREQUENCY MODE CONVERTER WITH SMALL OUTPUT ANGLE VARIATION FOR A STEP-TUNABLE GYROTRON , 2009 .

[22]  Shaolin Liao,et al.  A Fast Algorithm for Computation of Electromagnetic Wave Propagation in Half-Space , 2009, IEEE Transactions on Antennas and Propagation.

[23]  R. J. Vernon,et al.  A Fast Algorithm for Wave Propagation from a Plane or a Cylindrical Surface , 2007 .

[24]  Shaolin Liao,et al.  Miter Bend Mirror Design for Corrugated Waveguides , 2009 .

[25]  Shaolin Liao.  Beam-Shaping PEC Mirror Phase Corrector Design , 2020 .

[26]  D. Christodoulides,et al.  Fluctuations and noise-limited sensing near the exceptional point of parity-time-symmetric resonator systems , 2018, Optica.

[27]  R. J. Vernon,et al.  On the Image Approximation for Electromagnetic Wave Propagation and PEC Scattering in Cylindrical Harmonics , 2006 .

[28]  Shaolin Liao,et al.  Rigorous Quantum Formulation of Parity-Time Symmetric Coupled Resonators , 2020, Progress In Electromagnetics Research M.