Terahertz wave biomolecular sensor based on all-dielectric high Q metasurface

Emerging metasurfaces for refractometric sensing: fundamental and applications

“…Biosensors based on metasurfaces have emerged as an attractive platform due to their ability to sense the surface binding of biomolecules with high sensitivity in a label-free manner [118], enabling a rapid quantification of association/dissociation rates and equilibrium constants for analytes binding to targets. Biosensors can be used to recognize biomarkers of liver cancer [61], pancreatic cancer [119] and COVID-19 [92], to identify normal and cancerous human cells [69,120], and to detect different mass fractions of protein solution [105,121]. Chemical sensors focus on detections of some small molecules that play an important role in the life process and environment [62,73,122], drug concentration detection [86,123], and pesticide detection [124,125], as well as identifications of toxic substances [62,95,103].…”

Research of ultra-narrow band filters based on silicon nitride subwavelength grating used in terahertz detection techniques

“…THz waves lie between infrared and microwave, in the transition stage from macro electronics to micro photonics. Because THz wave has the characteristics of penetration, security, broadband, transient, coherence and so on, it has aroused great interest in the application of imaging [1][2][3], security [4,5], biomolecular detection [6], chemical process research [7][8][9] and other fields.…”