Journal
APPLIED OPTICS
Volume 62, Issue 19, Pages 5069-5076Publisher
Optica Publishing Group
DOI: 10.1364/AO.492446
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This study presents a terahertz (THz) sensor based on a metasurface integrated with Au nanoparticles (AuNPs) to improve the sensitivity of whey protein detection and enhance the sensing index of group delay. It demonstrates that AuNPs can enhance the sensing performance of the biosensor. The internal mechanism is explained by modified perturbation theory and the coupled harmonic oscillator model. This study provides a method of enhancing the sensitivity of THz biosensors.
A terahertz (THz) sensor is presented based on a metasurface integrated with Au nanoparticles (AuNPs). It was used to improve the sensitivity of the detection of whey protein and to enhance the sensing index of group delay. This demonstrates that AuNPs can improve the sensing performance of the biosensor. The internal mechanism can be explained by the modified perturbation theory and the coupled harmonic oscillator model. This study provides a means of enhancing the sensitivity of the THz biosensor. & COPY; 2023 Optica Publishing Group
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