Invisible Thin-Film Patterns With Strong Infrared Emission as an Optical Security Feature

dc.authorid Serhatlioglu, Murat/0000-0003-2083-6756
dc.authorid Bakan, Gokhan/0000-0001-8335-2439
dc.authorid Elbuken, Caglar/0000-0001-8359-6871
dc.authorscopusid 26031284100
dc.authorscopusid 37664398200
dc.authorscopusid 57189002904
dc.authorscopusid 15765269200
dc.authorscopusid 10339761000
dc.authorwosid Serhatlioglu, Murat/AAB-9523-2019
dc.authorwosid Elbuken, Caglar/V-2614-2019
dc.contributor.author Bakan, Gokhan
dc.contributor.author Ayas, Sencer
dc.contributor.author Serhatlioglu, Murat
dc.contributor.author Elbuken, Caglar
dc.contributor.author Dana, Aykutlu
dc.contributor.other Department of Electrical & Electronics Engineering
dc.date.accessioned 2024-07-05T15:27:52Z
dc.date.available 2024-07-05T15:27:52Z
dc.date.issued 2018
dc.department Atılım University en_US
dc.department-temp [Bakan, Gokhan; Ayas, Sencer; Serhatlioglu, Murat; Elbuken, Caglar; Dana, Aykutlu] Bilkent Univ, UNAM Inst Mat Sci & Nanotechnol, TR-06800 Ankara, Turkey; [Bakan, Gokhan] Atilim Univ, Dept Elect & Elect Engn, TR-06830 Ankara, Turkey; [Ayas, Sencer] Stanford Sch Med, Dept Radiol, Canary Ctr Stanford Canc Early Detect, Palo Alto, CA 94304 USA; [Dana, Aykutlu] Stanford Univ, EL Ginzton Lab, Stanford, CA 94305 USA en_US
dc.description Serhatlioglu, Murat/0000-0003-2083-6756; Bakan, Gokhan/0000-0001-8335-2439; Elbuken, Caglar/0000-0001-8359-6871 en_US
dc.description.abstract Spectrally 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 approximate to 30 degrees C from >150 degrees 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. en_US
dc.description.sponsorship TUBITAK [114E960] en_US
dc.description.sponsorship G.B. acknowledges TUBITAK grant # 114E960. en_US
dc.identifier.citationcount 28
dc.identifier.doi 10.1002/adom.201800613
dc.identifier.issn 2195-1071
dc.identifier.issue 21 en_US
dc.identifier.scopus 2-s2.0-85052824236
dc.identifier.uri https://doi.org/10.1002/adom.201800613
dc.identifier.uri https://hdl.handle.net/20.500.14411/2733
dc.identifier.volume 6 en_US
dc.identifier.wos WOS:000449767800021
dc.identifier.wosquality Q1
dc.institutionauthor Bakan, Gökhan
dc.language.iso en en_US
dc.publisher Wiley-v C H verlag Gmbh en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/closedAccess en_US
dc.scopus.citedbyCount 34
dc.subject enhanced infrared absorption en_US
dc.subject optical security en_US
dc.subject Salisbury screen en_US
dc.subject thermal emission en_US
dc.subject thermal emitters en_US
dc.title Invisible Thin-Film Patterns With Strong Infrared Emission as an Optical Security Feature en_US
dc.type Article en_US
dc.wos.citedbyCount 34
dspace.entity.type Publication
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