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. 2019 Apr 8;9:5751. doi: 10.1038/s41598-019-42293-9

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© The Author(s) 2019

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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Continuous tuning performance and corresponding physical mechanism. The temperature-dependent THz absorption spectra of the proposed hybrid VO₂ MMA are depicted in the heating process (a) and the cooling process (b). (c–j) Surface electric field distribution corresponding to the perfect absorption at 1.69 THz of the proposed L-shaped metasurface structure for the heating process at different temperatures (50–70 °C).