Invisible thin-film patterns with strong infrared emission as an optical security feature

Simple item page
buir.contributor.authorElbuken, Çağlar
dc.citation.issueNumber21en_US
dc.citation.spage1800613en_US
dc.citation.volumeNumber6en_US
dc.contributor.authorBakan, G.en_US
dc.contributor.authorAyas S.en_US
dc.contributor.authorSerhatlioglu, M.en_US
dc.contributor.authorElbuken, Çağlaren_US
dc.contributor.authorDana, A.en_US
dc.date.accessioned2019-02-21T16:03:58Z
dc.date.available2019-02-21T16:03:58Z
dc.date.issued2018en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractSpectrally selective thermal emission is in high demand for thermophotovoltaics, radiative cooling, and infrared sensing applications. Spectral control of the emissivity is historically achieved by choosing the material with suitable infrared properties. The recent advancements in nanofabrication techniques that lead to enhanced light-matter interactions enable optical properties like infrared emissivity that are not naturally available. In this study, thermal emitters based on nanometer-thick dielectrics on field-enhancement surfaces as optical security features are proposed. Such a function is achieved by generating patterns by ultrathin dielectrics that are transparent in the visible and exhibit strong infrared absorption in the spectral range of thermal cameras. The invisible patterns are then revealed by thermal imaging. The field-enhancement surfaces enhance the emissivity of the patterns, in turn reduce the minimum temperature to detect the thermal emission down to ≈30 °C from >150 °C to exploit ubiquitous heat sources like the human body. The study provides a framework for the use of thermal emitters as optical security features and demonstrates applications on rigid and flexible substrates.
dc.description.provenanceMade available in DSpace on 2019-02-21T16:03:58Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 222869 bytes, checksum: 842af2b9bd649e7f548593affdbafbb3 (MD5) Previous issue date: 2018en
dc.embargo.release2019-11-05en_US
dc.identifier.doi10.1002/adom.201800613
dc.identifier.issn2195-1071en_US
dc.identifier.urihttp://hdl.handle.net/11693/50150
dc.language.isoEnglishen_US
dc.publisherWiley-VCH Verlagen_US
dc.relation.isversionofhttps://doi.org/10.1002/adom.201800613
dc.source.titleAdvanced Optical Materialsen_US
dc.subjectenhanced infrared absorptionen_US
dc.subjectOptical securityen_US
dc.subjectSalisbury screenen_US
dc.subjectThermal emissionen_US
dc.subjectThermal emittersen_US
dc.titleInvisible thin-film patterns with strong infrared emission as an optical security featureen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Invisible_thin_film_patterns_with_strong_infrared_emission_as_an_optical_security_feature.pdf
Size:
1.52 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Scholarly Publications - UNAM