ArticleBiosensors2021
High Performance of a Metal Layer-Assisted Guided-Mode Resonance Biosensor Modulated by Double-Grating.
Article in Biosensors, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Highly sensitive refractive index sensor based on asymmetric spectral response of TiO2 high-contrast grating under LED illumination.PloS one · 2026Article
- All dielectric etalon based metasurfaces optimized for high FOM refractive index sensing.Scientific reports · 2025Article
- Exploiting Thin-Film Properties and Guided-Mode Resonance for Designing Ultrahigh-Figure-of-Merit Refractive Index Sensors.Sensors (Basel, Switzerland) · 2024Article
- Handheld Biosensor System Based on a Gradient Grating Period Guided-Mode Resonance Device.Biosensors · 2023Article
- Sensing Mechanisms of Rough Plasmonic Surfaces for Protein Binding of Surface Plasmon Resonance Detection.Sensors (Basel, Switzerland) · 2023Article
- Label-Free Bound-States-in-the-Continuum Biosensors.Biosensors · 2022Review
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Authors and funding
6 authors.
Funding
Abstract
Guided-mode resonance (GMR) sensors are widely used as biosensors with the advantages of simple structure, easy detection schemes, high efficiency, and narrow linewidth. However, their applications are limited by their relatively low sensitivity (<200 nm/RIU) and in turn low figure of merit (FOM, <100 1/RIU). Many efforts have been made to enhance the sensitivity or FOM, separately. To enhance the sensitivity and FOM simultaneously for more sensitive sensing, we proposed a metal layer-assisted double-grating (MADG) structure with the evanescent field extending to the sensing region enabled by the metal reflector layer underneath the double-grating. The influence of structural parameters was systematically investigated. Bulk sensitivity of 550.0 nm/RIU and FOM of 1571.4 1/RIU were obtained after numerical optimization. Compared with a single-grating structure, the surface sensitivity of the double-grating structure for protein adsorption increases by a factor of 2.4 times. The as-proposed MADG has a great potential to be a biosensor with high sensitivity and high accuracy.
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