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. 2021 Aug 5;11:15863. doi: 10.1038/s41598-021-95429-1

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Average temperature change ΔT of the VO₂ gap in the dimer under the 5 nW/μm² LWIR irradiation (red solid line) and the corresponding end-to-end resistance normalized by the room temperature resistance R/R₀ (blue solid line). For comparison, average temperature change of a perfect absorbing VO₂ film with the same thermal time constant (red dashed line) and the film’s normalized resistance (blue dotted line) are also displayed.