ArticleSensors (Basel, Switzerland)2024
Detection of Low-Concentration Biological Samples Based on a QBIC Terahertz Metamaterial Sensor.
Article in Sensors (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Immunomagnetic-MXene Bifunctional Probes for Ultrasensitive and Specific Terahertz Metasensing of Tumor-Derived Exosomes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Low-Cost Self-Driven Liquid Biosensor Based on Metamaterials for Glioblastoma-Related Sample Detection.Biosensors · 2026Article
- A Dual-Channel Synergistic Ultrasensitive Biosensor for Tumor Liquid Biopsy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- All-LCP Terahertz Metasensor with Dual Quasi-BIC Resonances for Dual-Range Refractive Index Sensing.Biosensors · 2026Article
- Evolutionary Diffusion Framework Empowering High-Performance Freeform Terahertz Metasurface Sensing.Sensors (Basel, Switzerland) · 2026Article
- Label-Free Microdroplet Concentration Detector Based on a Quadruple Resonant Ring Metamaterial.Sensors (Basel, Switzerland) · 2026Article
- Terahertz metamaterial liquid detector optimized by deep learning.Scientific reports · 2025Article
- Multi-Mode Coupling Enabled Broadband Coverage for Terahertz Biosensing Applications.Biosensors · 2025Article
- Recent Advances in Metasurfaces: From THz Biosensing to Microwave Wireless Communications.Research (Washington, D.C.) · 2025Review
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Authors and funding
5 authors.
Funding
Abstract
Quasi-bound state in the continuum (QBIC) can effectively enhance the interaction of terahertz (THz) wave with matter due to the tunable high-Q property, which has a strong potential application in the detection of low-concentration biological samples in the THz band. In this paper, a novel THz metamaterial sensor with a double-chain-separated resonant cavity structure based on QBIC is designed and fabricated. The process of excitation of the QBIC mode is verified and the structural parameters are optimized after considering the ohmic loss by simulations. The simulated refractive index sensitivity of the sensor is up to 544 GHz/RIU, much higher than those of recently reported THz metamaterial sensors. The sensitivity of the proposed metamaterial sensor is confirmed in an experiment by detecting low-concentration lithium citrate (LC) and bovine serum albumin (BSA) solutions. The limits of detection (LoDs) are obtained to be 0.0025 mg/mL (12 μM) for LC and 0.03125 mg/mL (0.47 μM) for BSA, respectively, both of which excel over most of the reported results in previous studies. These results indicate that the proposed THz metamaterial sensor has excellent sensing performances and can well be applied to the detection of low-concentration biological samples.
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