ArticleNanophotonics (Berlin, Germany)2023
Honeycomb-like aluminum antennas for surface-enhanced infrared absorption sensing.
Article in Nanophotonics (Berlin, Germany), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Plasmonics of non-noble metals.RSC advances · 2026Review
- Large-area sensors using Cd(Zn)O plasmonic nanoparticles for surface-enhanced infrared absorption.Nanophotonics (Berlin, Germany) · 2025Article
- Comparing silver and gold nanoislands' surface plasmon resonance for bisacodyl and its metabolite quantification in human plasma.BMC chemistry · 2024Article
- Wavelength multiplexing infrared metasurfaces for protein recognition and trace detection.Nanophotonics (Berlin, Germany) · 2023Article
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6 authors.
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Abstract
Surface-enhanced infrared absorption (SEIRA) spectroscopy is a competent method to detect trace quantity of molecules and even protein conformational flexibility by enhancing their vibrational modes. To improve the spectroscopy features, we propose a surface with honeycomb-like (HC) arrangement of aluminum equilateral triangles within a metal-insulator-metal configuration. With adjustable geometric parameters, the HC nanoantennas allow a tunable and wide spectral coverage in the IR. The reflectance measurements correlate extremely well with the numerical simulations. Being compact and insensitive to the light polarization, the HC are appealing for boosting the signal-to-noise ratio and increasing the number of hotspots as required for sensing applications. These nanoantennas are thus suitable for accurate and broadband SEIRA sensing via a spectral overlap between the large plasmonic resonances and the narrow IR vibrational modes of our analyte (vanillin). In line with our previously studied bowties nanoantennas, we demonstrate, using HC, SEIRA enhancement factors greater than 10
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