Physically unclonable surfaces via dewetting of polymer thin films

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buir.contributor.authorÖnses, Mustafa Serdar
buir.contributor.orcidÖnses, Mustafa Serdar|0000-0001-6898-7700
dc.citation.epage11259en_US
dc.citation.issueNumber9en_US
dc.citation.spage11247en_US
dc.citation.volumeNumber13en_US
dc.contributor.authorTorun, N.
dc.contributor.authorTorun, İ.
dc.contributor.authorŞakir, M.
dc.contributor.authorKalay, M.
dc.contributor.authorÖnses, Mustafa Serdar
dc.date.accessioned2022-01-27T12:00:40Z
dc.date.available2022-01-27T12:00:40Z
dc.date.issued2021-03-10
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractFrom anti-counterfeiting to biotechnology applications, there is a strong demand for encoded surfaces with multiple security layers that are prepared by stochastic processes and are adaptable to deterministic fabrication approaches. Here, we present dewetting instabilities in nanoscopic (thickness <100 nm) polymer films as a form of physically unclonable function (PUF). The inherent randomness involved in the dewetting process presents a highly suitable platform for fabricating unclonable surfaces. The thermal annealing-induced dewetting of poly(2-vinyl pyridine) (P2VP) on polystyrene-grafted substrates enables fabrication of randomly positioned functional features that are separated at a microscopic length scale, a requirement set by optical authentication systems. At a first level, PUFs can be simply and readily verified via reflection of visible light. Area-specific electrostatic interactions between P2VP and citrate-stabilized gold nanoparticles allow for fabrication of plasmonic PUFs. The strong surface-enhanced Raman scattering by plasmonic nanoparticles together with incorporation of taggants facilitates a molecular vibration-based security layer. The patterning of P2VP films presents opportunities for fabricating hybrid security labels, which can be resolved through both stochastic and deterministic pathways. The adaptability to a broad range of nanoscale materials, simplicity, versatility, compatibility with conventional fabrication approaches, and high levels of stability offer key opportunities in encoding applications.en_US
dc.description.provenanceSubmitted by Mustafa Er (mer@bilkent.edu.tr) on 2022-01-27T12:00:40Z No. of bitstreams: 1 Physically_unclonable_surfaces_via_dewetting_of_polymer_thin_films.pdf: 10715238 bytes, checksum: 144233ae512b0be90f9a37a49656bb6c (MD5)en
dc.description.provenanceMade available in DSpace on 2022-01-27T12:00:40Z (GMT). No. of bitstreams: 1 Physically_unclonable_surfaces_via_dewetting_of_polymer_thin_films.pdf: 10715238 bytes, checksum: 144233ae512b0be90f9a37a49656bb6c (MD5) Previous issue date: 2021-03-10en
dc.identifier.doi10.1021/acsami.0c16846en_US
dc.identifier.eissn1944-8252
dc.identifier.issn1944-8244
dc.identifier.urihttp://hdl.handle.net/11693/76839
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttps://doi.org/10.1021/acsami.0c16846en_US
dc.source.titleACS Applied Materials & Interfacesen_US
dc.subjectPhysically unclonable functionsen_US
dc.subjectDewettingen_US
dc.subjectPolymer filmsen_US
dc.subjectNanoparticlesen_US
dc.subjectPlasmonicsen_US
dc.subjectSERSen_US
dc.titlePhysically unclonable surfaces via dewetting of polymer thin filmsen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)