ArticleScientific reports2024
A metal-insulator-metal waveguide-based plasmonic refractive index sensor for the detection of nanoplastics in water.
Article in Scientific reports, 2024. 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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6 citing papers in PubMed.
- Coherent cavity coupling in O-band silicon photonic sensors for water environment detection.Scientific reports · 2026Article
- Plasmonics Meets Metasurfaces: A Vision for Next Generation Planar Optical Systems.Micromachines · 2026Review
- Plasmonic resonance modulation of graphene by nanoscale substrate curvatures.Nanoscale advances · 2025Article
- Machine learning analysis of a Fano resonance based plasmonic refractive index sensor using U shaped resonators.Scientific reports · 2025Article
- Machine Learning Enabled Multidimensional Data Utilization Through Multi-Resonance Architecture: A Pathway to Enhanced Accuracy in Biosensing.ACS omega · 2025Article
- Mid-Infrared Photonic Sensors: Exploring Fundamentals, Advanced Materials, and Cutting-Edge Applications.Sensors (Basel, Switzerland) · 2025Review
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Abstract
A metal-insulator-metal waveguide-based square-ring resonator plasmonic refractive index sensor is designed and optimized for achieving high sensitivity. The sensitivity of the sensor critically depends on the physical dimension and the geometrical parameters of the resonator. Systematic studies on varying geometrical parameters of the resonator reveal that the sensitivity increases with the number of concentric square-rings. Moreover, the full-width-half-maxima of the resonance line is found to increase with the number of square rings. Importantly, variations in the coupling length affect the transmitted intensity as well as the full-width-half-maxima of the resonance spectra in a characteristic fashion. An initial exploration of the optimized sensor for nanoplastic detection for a range of volume fractions 0.15625-0.625% shows a systematic linear increase in the resonance wavelength with changing refractive index of the surrounding medium. This offers the possibility of ultrasensitive detection of extremely small change
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