2019
DOI: 10.1002/adma.201904532
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The Quest for Zero Loss: Unconventional Materials for Plasmonics

Abstract: There has been an ongoing quest to optimize the materials used to build plasmonic devices: first the elements were investigated, then alloys and intermetallic compounds, later semiconductors were considered, and, most recently, there has been interest in using more exotic materials such as topological insulators and conducting oxides. The quality of the plasmon resonances in these materials is closely correlated with their structure and properties. In general gold and silver are the most commonly specified mat… Show more

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Cited by 26 publications
(15 citation statements)
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References 90 publications
(93 reference statements)
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“…A monotonic shift of the threshold wavelength for the interband transition, signified by the abrupt drop of ε 2 (see Figure a), is observed in the Ag–Au alloy with increasing Au content, resulting from the fact that these metals form a solid solution regardless of their concentration. [ 62 ] This monotonic shift has also been observed by Kadkhodazadeh et al. in an independent study.…”
Section: Optical Properties Of Metal Alloyssupporting
confidence: 79%
See 1 more Smart Citation
“…A monotonic shift of the threshold wavelength for the interband transition, signified by the abrupt drop of ε 2 (see Figure a), is observed in the Ag–Au alloy with increasing Au content, resulting from the fact that these metals form a solid solution regardless of their concentration. [ 62 ] This monotonic shift has also been observed by Kadkhodazadeh et al. in an independent study.…”
Section: Optical Properties Of Metal Alloyssupporting
confidence: 79%
“…A monotonic shift of the threshold wavelength for the interband transition, signified by the abrupt drop of ε 2 (see Figure 3a), is observed in the Ag-Au alloy with increasing Au content, resulting from the fact that these metals form a solid solution regardless of their concentration. [62] This mono tonic shift has also been observed by Kadkhodazadeh et al in an independent study. [43] By contrast, Au-Cu alloys present a nonmonotonic variation in ε 2 (see Figure 3b) due to the pres ence of nonuniform small grains that enhance light scattering and absorption.…”
Section: Experimental Determination Of Dielectric Functionssupporting
confidence: 77%
“…Linear-optical transmission and reflection experiments, 2 however, revealed no spectral features for the different arrays that significantly deviate from the bare silicon substrate. This may be due to the low optical conductivity [50] of permalloy [51,52] and thus, high damping factors for any type of plasmonic resonance. In addition, silicon as substrate material exhibits a high refractive index that significantly red-shifts, damps and broadens electromagnetic resonances [53,54].…”
Section: Summary and Perspectivementioning
confidence: 99%
“…Plasmonics is based on studying the surface plasmon resonance (SPR) phenomenon as the quality of the plasmon resonance is closely related to the structure and properties of the materials [1]. Its implementation in analytical technologies, as surface-enhanced Raman spectroscopy (SERS), plasmonenhanced fluorescence (PEF) and surface-enhanced infrared spectroscopy (SEIRA), for detection of chemicals and biological species, is important for various fields of life sciences, such as medical diagnostics, food control and security [2].…”
Section: Introductionmentioning
confidence: 99%