Destructive Interference-Enabled Metasurface for Efficient Wireless Power Transfer in Implantable Medical Devices

Destructive Interference-Enabled Metasurface for Efficient Wireless Power Transfer in Implantable Medical Devices | 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 Destructive Interference-Enabled Metasurface for Efficient Wireless Power Transfer in Implantable Medical Devices Yibo Pan, Dun Lu, Tongxing Huang, Xinhua Yu, Ladislau Matekovits, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7989589/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Wireless power transfer (WPT) holds significant promise for enabling continuous operation of implantable medical devices (IMDs), overcoming the limitations of conventional power sources such as batteries and wired interconnects. However, energy transfer efficiency in radiative WPT systems is often hindered by pronounced reflection losses at the tissue–air interface. Herein, we report the design and fabrication of an ultrathin (~λ/26), flexible anti-reflection metasurface based on destructive interference principles to minimize reflection within the ISM band (5.725–5.875 GHz). Engineered using biocompatible polydimethylsiloxane (PDMS), the metasurface exhibits excellent mechanical conformability to skin, forming an integrated interface with the body. When coupled with a miniaturized implantable antenna and a directional external patch antenna, the metasurface significantly improves power transmission efficiency, yielding a 6.1 dB increase in the transmission coefficient without requiring bulky or multilayer impedance matching structures. Moreover, the system demonstrates stable performance under angular misalignment (up to 45°), lateral displacement, structural deformation, and variations in tissue dielectric properties. This study introduces a novel interface-engineering approach for enhancing transcutaneous energy transfer, paving the way for thinner, more efficient, and wearable bioelectronic systems. Physical sciences/Engineering Physical sciences/Materials science Full Text Additional Declarations No competing interests reported. Supplementary Files Supportinginformation.docx Cite Share Download PDF Status: Posted 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-7989589","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":542090601,"identity":"7eb1b2d8-9d29-41a2-987f-e2860071ea8e","order_by":0,"name":"Yibo Pan","email":"","orcid":"","institution":"University of Electronic Science and Technology of China","correspondingAuthor":false,"prefix":"","firstName":"Yibo","middleName":"","lastName":"Pan","suffix":""},{"id":542090602,"identity":"c20928e8-1173-4aea-9fd1-bc35f7f77863","order_by":1,"name":"Dun Lu","email":"","orcid":"","institution":"University of Electronic Science and Technology of 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