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

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© The Author(s) 2021

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Temperature changes of the VO₂ gap under the 5 nW/μm² LWIR irradiation (a) for various rod lengths l from 2.0 to 2.8 μm and (b) for various gap widths g from 2 to 20 nm. Other parameters are the same as in Fig. 1.