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. 2020 Sep 25;11:4872. doi: 10.1038/s41467-020-18544-z

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Simulations of responsivity for TM-polarization for different antenna lengths. Different cases are presented: non-resonant antenna within the hBN RB spectral range (antenna total length of L = 1.8 μm, shown in green), semi-resonant antenna (L = 2.7 μm shown in blue, which corresponds to the experimental antenna) and resonant antenna (L = 4.8 μm, shown in red). b Simulations of responsivity and NEP as a function of gate tip width and graphene (following the exact shape of the gates) as shown in the schematic for TE-polarization at λ = 6.5 μm. The tip length is 855 nm, which includes the gap between the gates of 155 nm. The source-drain distance is 2.6 μm and electrodes width is 2 μm as in the measured device. c Same as b but as a function of the gate tip length as shown in schematic. The tip width is 500 nm.