Tunable plasmonic resonances in Si-Au slanted columnar heterostructure thin films
dc.bibliographicCitation.firstPage | 71 | |
dc.bibliographicCitation.journalTitle | Scientific Reports | eng |
dc.bibliographicCitation.volume | 9 | |
dc.contributor.author | Kılıç, Ufuk | |
dc.contributor.author | Mock, Alyssa | |
dc.contributor.author | Feder, René | |
dc.contributor.author | Sekora, Derek | |
dc.contributor.author | Hilfiker, Matthew | |
dc.contributor.author | Korlacki, Rafał | |
dc.contributor.author | Schubert, Eva | |
dc.contributor.author | Argyropoulos, Christos | |
dc.contributor.author | Schubert, Mathias | |
dc.date.accessioned | 2022-10-21T08:17:46Z | |
dc.date.available | 2022-10-21T08:17:46Z | |
dc.date.issued | 2019 | |
dc.description.abstract | We report on fabrication of spatially-coherent columnar plasmonic nanostructure superlattice-type thin films with high porosity and strong optical anisotropy using glancing angle deposition. Subsequent and repeated depositions of silicon and gold lead to nanometer-dimension subcolumns with controlled lengths. We perform generalized spectroscopic ellipsometry measurements and finite element method computations to elucidate the strongly anisotropic optical properties of the highly-porous Si-Au slanted columnar heterostructures. The occurrence of a strongly localized plasmonic mode with displacement pattern reminiscent of a dark quadrupole mode is observed in the vicinity of the gold subcolumns. We demonstrate tuning of this quadrupole-like mode frequency within the near-infrared spectral range by varying the geometry of Si-Au slanted columnar heterostructures. In addition, coupled-plasmon-like and inter-band transition-like modes occur in the visible and ultra-violet spectral regions, respectively. We elucidate an example for the potential use of Si-Au slanted columnar heterostructures as a highly porous plasmonic sensor with optical read out sensitivity to few parts-per-million solvent levels in water. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/10295 | |
dc.identifier.uri | http://dx.doi.org/10.34657/9331 | |
dc.language.iso | eng | |
dc.publisher | [London] : Macmillan Publishers Limited, part of Springer Nature | |
dc.relation.doi | https://doi.org/10.1038/s41598-018-37153-x | |
dc.relation.essn | 2045-2322 | |
dc.rights.license | CC BY 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject.ddc | 500 | eng |
dc.subject.ddc | 600 | eng |
dc.subject.other | Metamaterials | eng |
dc.subject.other | Nanophotonics and plasmonics | eng |
dc.subject.other | Surfaces, interfaces and thin films | eng |
dc.title | Tunable plasmonic resonances in Si-Au slanted columnar heterostructure thin films | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | |
wgl.contributor | IPF | |
wgl.subject | Chemie | |
wgl.type | Zeitschriftenartikel |
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