Optical spectroscopy of arrays of Ag–Au nanoparticles obtained by vacuum-thermal evaporation

Громов, Д. Г.; Mel’nikov, Igor V.; Savitskii, A. I.; Trifonov, A. Yu.; Redichev, E. N.; Astapenko, V. A.

doi:10.1134/s1063785017030087

Cited by 6 publications

(3 citation statements)

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“…Arrays of Ag, Au and Ag-Au alloy NPs were formed by vacuum-thermal evaporation of small portions of matter and subsequent low-temperature vacuum annealing. This technique is described in more detail in [5][6][7]. The ratio of the weight portions of Ag and Au was established in such a way that the composition of the alloy particles corresponded to ~ Ag 0.5 Au 0.5 .…”

Section: Methodsmentioning

confidence: 99%

“…Formation of Ag-Au alloy nanostructures can be a potential solution to these problems. In addition, a change in the ratio of components in the alloy will allow us to control the position of localized surface plasmon resonance (LSPR) [4,5]. It is expected that this will allow expanding the nomenclature of substances identified using SERS-structures.…”

Section: Introductionmentioning

confidence: 99%

“…We have recently shown that arrays of pure Ag, Au and Ag-Au alloy nanoparticles with a Gaussian distribution in size and a given average size and distances between the particles can be controlled and reproducibly obtained by a vacuum-thermal evaporation method [5]. In this paper we have attempted to use the obtained arrays of Ag-Au alloy nanoparticles as the SERS-active layer.…”

Section: Introductionmentioning

confidence: 99%

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SERS of a-C Thin Film on Ag, Au, Ag0.52-Au0.48 Alloy Nanoparticle Arrays with Normal Particles Size Distribution Formed by Vacuum Thermal Evaporation

Dubkov

Trifonov²,

Shaman³

et al. 2018

DDF

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This paper presents the results of experimental studies of arrays of Ag0.52Au0.48 alloy nanoparticles. Arrays were formed by vacuum-thermal evaporation on an unheated substrate and subsequent low-temperature vacuum annealing. The TEM images of the obtained nanoparticle arrays and corresponding histograms of particle size distribution are shown. The transmission spectra of these arrays showing the displacement of the plasma frequency as a function of the mean particle size are obtained. Spectra of Raman scattering from a thin film of amorphous carbon in presence of AgAu particles are obtained, and a comparative analysis of Raman scattering amplification factors for pure Ag, pure Au and Ag0.52Au0.48 alloy nanoparticles is presented.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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