Strong modulations of optical reflectance in tapered core-shell nanowires

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dc.contributor.authorFloris, Francesco
dc.contributor.authorLucia, Fornasari
dc.contributor.authorVittorio, Bellani
dc.contributor.authorMarini, Andrea
dc.contributor.authorBanfi, Francesco
dc.contributor.authorMarabelli, Franco
dc.contributor.authorBeltram, Fabio
dc.contributor.authorErcolani, Daniele
dc.contributor.authorBattiato, Sergio
dc.contributor.authorSorba, Lucia
dc.contributor.authorRossella, Francesco
dc.contributor.funderUniversité de Lyonen
dc.contributor.funderUniversité Claude Bernard Lyon 1en
dc.contributor.funderMinisterio de Economía, Industria y Competitividad, Gobierno de Españaen
dc.contributor.funderItalian Ministry for University and Researchen
dc.date.accessioned2019-12-05T12:17:11Z
dc.date.available2019-12-05T12:17:11Z
dc.date.issued2019-10-31
dc.description.abstractRandom assemblies of vertically aligned core–shell GaAs–AlGaAs nanowires displayed an optical response dominated by strong oscillations of the reflected light as a function of the incident angle. In particular, angle-resolved specular reflectance measurements showed the occurrence of periodic modulations in the polarization-resolved spectra of reflected light for a surprisingly wide range of incident angles. Numerical simulations allowed for identifying the geometrical features of the core–shell nanowires leading to the observed oscillatory effects in terms of core and shell thickness as well as the tapering of the nanostructure. The present results indicate that randomly displaced ensembles of nanoscale heterostructures made of III–V semiconductors can operate as optical metamirrors, with potential for sensing applications.en
dc.description.sponsorshipUniversité de Lyon (ANR-16-IDEX-0005); Spanish Ministry of Economy and Competitiveness (MAT2016-75955-C2-2-R); Italian Ministry for University and Research (Grant No. RBFR13NEA4)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid3572en
dc.identifier.citationFloris, F., Fornasari, L., Bellani, V., Marini, A., Banfi, F., Marabelli, F., Beltram, F., Ercolani, D., Battiato, S., Sorba, L. and Rossella, F. (2019) 'Strong Modulations of Optical Reflectance in Tapered Core–Shell Nanowires', Materials, 12(21), 3572. (11pp.) doi: 10.3390/ma12213572en
dc.identifier.doi10.3390/ma12213572en
dc.identifier.eissn1996-1944
dc.identifier.endpage11en
dc.identifier.issued21en
dc.identifier.journaltitleMaterialsen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/9343
dc.identifier.volume12en
dc.language.isoenen
dc.publisherMDPI AGen
dc.rights© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectCore-shellen
dc.subjectNanowiresen
dc.subjectSemiconductorsen
dc.subjectOptical reflectanceen
dc.subjectNumerical simulationsen
dc.titleStrong modulations of optical reflectance in tapered core-shell nanowiresen
dc.typeArticle (peer-reviewed)en
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