Refractive Index Sensing with Plasmons in 2D Metals
In this paper, we show that nano-engineered ultrathin two-dimensional (2D) metal films supporting infrared plasmonic resonances can enable highly responsive refractive index (RI) sensing. Our results reveal the strong dependence of the RI sensitivity on the 2D-metals' thickness. In particular, for a 1-nm-thick analyte layer, a RI sensitivity up to 110 nm/RIU (90 nm/RIU) is observed in atomically thin 2D-In (2D-Ga) nanoribbons exhibiting highly localized plasmonic resonances at mid-infrared wavelengths.
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Work Title | Refractive Index Sensing with Plasmons in 2D Metals |
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License | In Copyright (Rights Reserved) |
Work Type | Article |
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Publication Date | September 7, 2023 |
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Deposited | September 09, 2024 |
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