Metasurface-based multifunctional composites with ultra-robust broadband microwave absorption up to 1000 ℃

Metasurface-based multifunctional composites with ultra-robust broadband microwave absorption up to 1000 ℃ | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Metasurface-based multifunctional composites with ultra-robust broadband microwave absorption up to 1000 ℃ Haitao Liu, Xinyuan Lv, Qiujin Gu, Shengchi Zhu, Xun Sun, Minglong Yang, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6824583/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 25 Nov, 2025 Read the published version in Nature Communications → Version 1 posted You are reading this latest preprint version Abstract The metamaterials offer methodology and infinite possibilities for ultra-broadband microwave absorption (MA). However, maintaining stable broadband MA under extreme high-temperature environments remains one of the most cutting-edge challenges. Herein, we report a novel RuO 2 /glass resistive material for the fabrication of microwave-absorbing metasurfaces. Based on tunneling effect, an ultra-low temperature coefficient of resistance was achieved in RuO 2 /glass, resulting in temperature-insensitivity of its electrical properties and electrical loss ability, thereby ensuring stability of MA properties of metasurfaces against temperature. Furthermore, using low-dielectric alumina aerogel composites and Al 2 O 3f /Al 2 O 3 ceramic composites as dielectric spacer layer, we propose the multifunctional composites integrated with MA, thermal insulation and load-bearing (MTL). The MTL integrated composites show an impressive broadband (2~12 GHz) MA performance that is ultra-robust against temperature variations (25~1000 °C), thermal shock (50 cycles at 25~1000 °C), incidence angle (± 45°) and polarization. Additionally, the integrated composites also demonstrate a long-term thermal insulation ability, a high compressive modulus (6.58 MPa), and a low density (0.54 g/cm 3 ). This advancement provides insights for developing MA materials that can work in extreme multi-field environments. Physical sciences/Materials science/Nanoscale materials/Metamaterials Physical sciences/Materials science/Structural materials/Composites Physical sciences/Materials science/Nanoscale materials/Electronic properties and materials Physical sciences/Materials science/Techniques and instrumentation/Design, synthesis and processing Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryVideo1.mp4 Thermal insulation test of MTL integrated composites using butane flame SupplementaryVideo2.mp4 Load-bearing test for MTL integrated composites SupplementaryVideo3.mp4 One loading‒unloading cycle of MTL integrated composites at 10% strain Supplementaryfile.docx Supplementary documents for the manuscript Cite Share Download PDF Status: Published Journal Publication published 25 Nov, 2025 Read the published version in Nature Communications → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6824583","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":467260940,"identity":"32acbfff-933f-41bc-8404-83694ad42e65","order_by":0,"name":"Haitao 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