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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Open Access
Creators
  1. Lei Kang
  2. Yuhao Wu
  3. Sawyer D. Campbell
  4. Douglas H. Werner
  5. Joshua A. Robinson
Keyword
  1. 2D metals
  2. Plasmons
  3. field-enhancement
  4. mid-infrared
  5. reactive index sensing
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings
Publication Date September 7, 2023
Publisher Identifier (DOI)
  1. https://doi.org/10.1109/usnc-ursi52151.2023.10237872
Deposited September 09, 2024

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Version 1
published

  • Created
  • Added 2D-metal_sensing_APS_2023_Vsubmitted.pdf
  • Added Creator Lei Kang
  • Added Creator Yuhao Wu
  • Added Creator Sawyer D. Campbell
  • Added Creator Douglas H. Werner
  • Added Creator Joshua A. Robinson
  • Published
  • Updated
  • Updated Keyword, Publication Date Show Changes
    Keyword
    • 2D metals, Plasmons, field-enhancement, mid-infrared, reactive index sensing
    Publication Date
    • 2023-01-01
    • 2023-09-07