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[IEEE 2019 IEEE Asia-Pacific Microwave Conference (APMC) - Singapore, Singapore (2019.12.10-2019.12.13)] 2019 IEEE Asia-Pacific Microwave Conference (APMC) - A terahertz microfluidic sensor based on metasurface
摘要： We present a microfluidic sensor integrated with metasurface and a terahertz measuring system used for it. To obtain better sensing sensitivity, numerical simulations were conducted to determine the structure and excitation mode for metasurface. A method to obtain the concentration of sample solution was given as an application of the sensor. Asymmetry metasurface are discussed with figure of merit. A new tradeoff index FD is defined to assess the performance of microfluidic sensor and the best metasurface for our microfluidic sensor is selected through FD.
关键词： Fano resonance,microfluidic sensor,metasurface
更新于2025-09-19 17:13:59
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[IEEE 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) - Paris, France (2019.9.1-2019.9.6)] 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) - Photonic Bandgap Bragg Waveguide-based Terahertz Microfluidic Sensor
摘要： A 3D printed photonic bandgap Bragg waveguide-based resonant fluidic sensor operating in the THz spectral range is theoretical analyzed and experimental studied. The liquid analytes injected into a microfluidic channel inside the reflector region result in anticrossing of the dispersion relation between the core-guided mode and the defect state. By tracking the spectral positions of the induced absorption dips and phase changes on the transmission spectra, the fluidic sensor exhibits a sensitivity of 110 GHz/RIU and a resolution of 0.0045 RIU. The sensor provides a non-contact measurement method for real-time monitoring of the refractive index change of liquid flow in practical applications.
关键词： 3D Printing,Photonic Bandgap,Microfluidic Sensor,Bragg Waveguide,Terahertz
更新于2025-09-11 14:15:04