Detection and enhancement of latent fingerprint by powder method using bio-synthesized spherical-shaped Bismuth Oxychloride nanoparticles

Detection and enhancement of latent fingerprint by powder method using bio-synthesized spherical-shaped Bismuth Oxychloride nanoparticles | 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 Detection and enhancement of latent fingerprint by powder method using bio-synthesized spherical-shaped Bismuth Oxychloride nanoparticles Nityanand Choudhary This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4685142/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 Green fluorescent nanoparticles Bi 0.95 Tb 3+ 0.5 Li 0.3 OCl were successfully synthesized through the solution combustion method using Mimosa pudica as a biofuel. The nanoparticles, annealed at 1000 0 C for three hours, were characterized by X-ray diffraction, revealing a Body Centered Cubic structure. When excited with a 980 nm diode laser, the phosphor emitted a green color. The energy gap of the nanophosphor was estimated to be 3.64eV using diffuse reflectance spectra. High contrast latent fingerprints were developed on porous and semi-porous surfaces by exciting the phosphors with a 980nm diode laser. These fingerprints were compared with a commercially available green luminescent fingerprint. The synthesized nano phosphor proved to be a viable alternative to traditional luminescent powders for forensic applications, offering a simple, fast, highly sensitive, and eco-friendly method for detecting and enhancing fingermarks related to forensic materials. Bio mediated synthesis latent fingerprint electron microscopy 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-4685142","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":331133030,"identity":"92081112-424d-4408-99cc-0cd0f0fe63d0","order_by":0,"name":"Nityanand Choudhary","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA9UlEQVRIiWNgGAWjYBACAyBiBtI8QJzAwFABpJiZG0jRcgakhZE4LRDA2AYm8WsxZ2/e9riwrU6Gv//A448/59VG87cDtfyo2IZTi2XPsXLjmW2HeSRuJKRJ8247njvjMGMDY8+Z27gddiPHTJq37QCPgQRDGjPjtmO5DUAtzIxtBLXU8RjwH0j++HPOsdz5RGph5jFgSEiQ4G2oyd1AUMsZoF94zkH9wnPsQO5GoJaDeP1yHBhiPGV19vz9Z5I//qipy513/vDBBz8qcGsBAjYGRjYQzZMAJA6DhQ7gUw/WwvAHRLODFNYRUDwKRsEoGAUjEQAAN89bI6u1uQcAAAAASUVORK5CYII=","orcid":"","institution":"JSS Academy of Technical Education, Bengaluru","correspondingAuthor":true,"prefix":"","firstName":"Nityanand","middleName":"","lastName":"Choudhary","suffix":""}],"badges":[],"createdAt":"2024-07-04 08:52:46","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4685142/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4685142/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":61340160,"identity":"965b42e3-ebc9-479c-b355-1099f82bfd9b","added_by":"auto","created_at":"2024-07-29 16:27:09","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1265819,"visible":true,"origin":"","legend":"","description":"","filename":"ManuscriptRevised2ndJuly.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4685142/v1_covered_8aca9547-f2f6-4587-b6da-6aeadac422a1.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Detection and enhancement of latent fingerprint by powder method using bio-synthesized spherical-shaped Bismuth Oxychloride nanoparticles","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":"Bio mediated synthesis, latent fingerprint, electron microscopy","lastPublishedDoi":"10.21203/rs.3.rs-4685142/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4685142/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eGreen fluorescent nanoparticles Bi\u003csub\u003e0.95\u003c/sub\u003eTb\u003csup\u003e3+\u003c/sup\u003e\u003csub\u003e0.5\u003c/sub\u003eLi\u003csub\u003e0.3\u003c/sub\u003eOCl were successfully synthesized through the solution combustion method using Mimosa pudica as a biofuel. The nanoparticles, annealed at 1000\u003csup\u003e0\u003c/sup\u003eC for three hours, were characterized by X-ray diffraction, revealing a Body Centered Cubic structure. When excited with a 980 nm diode laser, the phosphor emitted a green color. The energy gap of the nanophosphor was estimated to be 3.64eV using diffuse reflectance spectra. High contrast latent fingerprints were developed on porous and semi-porous surfaces by exciting the phosphors with a 980nm diode laser. These fingerprints were compared with a commercially available green luminescent fingerprint. 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