Hydrogen sensor based on one-dimension Pd@Ag nanoparticle chain

Hydrogen sensor based on one-dimension Pd@Ag nanoparticle chain | 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 Research Article Hydrogen sensor based on one-dimension Pd@Ag nanoparticle chain Dawei Ruan, Xuguang Wang, Weimin Ou, Song Wang, Chen Wang, Guoan Zhao, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8213558/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 We investigate a hydrogen sensor based on a one-dimensional core-shell nanoparticle chain. The nanoparticles are composed of silver cores coated with palladium (Pd) shells. The distance between adjacent particles is larger than three times the unit radius. This configuration allows for the analysis of the optical response of the designed structure using both coupled dipole theory (CD) and the finite-difference time-domain (FDTD) method. Leveraging the change in the dielectric constant of Pd before and after hydrogen absorption, combined with the collective effects of surface plasmons, the presence of H 2 is detected through differences in the absorption cross-sections. Results show that by constructing nanoparticle chain models with varying periods or particle sizes, Wood’s anomaly and ultra-narrow absorption cross-sections are observed both before and after H 2 absorption. Furthermore, the difference in the absorption cross-sections still exhibits Wood's anomaly and ultra-narrow absorption cross-sections. These effects are attributed to the long-range interactions between individual and collective interactions within the unit structures, which can be directly predicted by CD theory. The maximum of the difference absorption cross-sections would be reach to 16.7% when the concentrate of H 2 changes 4%. The occurrence of Wood's anomaly and ultra-narrow absorption peaks in the absorption spectral difference can effectively indicate the presence of hydrogen in the structure, thereby reflecting the characteristics of hydrogen sensing from another perspective. Palladium Hydrogen gas sensor Surface plasmon Full Text Additional Declarations No competing interests reported. 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-8213558","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":556445467,"identity":"aafaa21c-270f-44e5-8f48-bbd68830ea0c","order_by":0,"name":"Dawei Ruan","email":"","orcid":"","institution":"Beijing University of Posts and Telecommunications (BUPT)","correspondingAuthor":false,"prefix":"","firstName":"Dawei","middleName":"","lastName":"Ruan","suffix":""},{"id":556445468,"identity":"67b7d644-895a-4728-ac15-b056ceecde9b","order_by":1,"name":"Xuguang Wang","email":"","orcid":"","institution":"Beijing University of Posts and 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chain","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Palladium, Hydrogen gas sensor, Surface plasmon","lastPublishedDoi":"10.21203/rs.3.rs-8213558/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8213558/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eWe investigate a hydrogen sensor based on a one-dimensional core-shell nanoparticle chain. The nanoparticles are composed of silver cores coated with palladium (Pd) shells. The distance between adjacent particles is larger than three times the unit radius. This configuration allows for the analysis of the optical response of the designed structure using both coupled dipole theory (CD) and the finite-difference time-domain (FDTD) method. Leveraging the change in the dielectric constant of Pd before and after hydrogen absorption, combined with the collective effects of surface plasmons, the presence of H\u003csub\u003e2\u003c/sub\u003e is detected through differences in the absorption cross-sections. Results show that by constructing nanoparticle chain models with varying periods or particle sizes, Wood\u0026rsquo;s anomaly and ultra-narrow absorption cross-sections are observed both before and after H\u003csub\u003e2\u003c/sub\u003e absorption. Furthermore, the difference in the absorption cross-sections still exhibits Wood's anomaly and ultra-narrow absorption cross-sections. These effects are attributed to the long-range interactions between individual and collective interactions within the unit structures, which can be directly predicted by CD theory. The maximum of the difference absorption cross-sections would be reach to 16.7% when the concentrate of H\u003csub\u003e2\u003c/sub\u003e changes 4%. The occurrence of Wood's anomaly and ultra-narrow absorption peaks in the absorption spectral difference can effectively indicate the presence of hydrogen in the structure, thereby reflecting the characteristics of hydrogen sensing from another perspective.\u003c/p\u003e","manuscriptTitle":"Hydrogen sensor based on one-dimension Pd@Ag nanoparticle chain","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-12-08 11:10:17","doi":"10.21203/rs.3.rs-8213558/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"e911e7a8-9290-4a04-9b68-c5df31bc3fae","owner":[],"postedDate":"December 8th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-12-21T06:53:20+00:00","versionOfRecord":[],"versionCreatedAt":"2025-12-08 11:10:17","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8213558","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8213558","identity":"rs-8213558","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}