Large range localized surface plasmon resonance of Ag nanoparticles films dependent of surface morphology

2016 ◽  
Vol 367 ◽  
pp. 563-568 ◽  
Author(s):  
Lijuan Yan ◽  
Yaning Yan ◽  
Leilei Xu ◽  
Rongrong Ma ◽  
Fengxian Jiang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Morphology ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Ag Nanoparticles ◽  
Localized Surface Plasmon Resonance ◽  
Large Range ◽  
Localized Surface Plasmon

An improvement in the coloration properties of Ag deposition-based plasmonic EC devices by precise control of shape and density of deposited Ag nanoparticles

Nanoscale ◽  
2020 ◽  
Vol 12 (47) ◽  
pp. 23975-23983
Author(s):  
Shunsuke Kimura ◽  
Tomoko Sugita ◽  
Kazuki Nakamura ◽  
Norihisa Kobayashi
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Ag Nanoparticles ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Green Color ◽  
Precise Control ◽  
Ag Deposition

Ag deposition-based EC device represents various colors by localized surface plasmon resonance. Four vivid chromatic colors of magenta, cyan, yellow, and green color was represented by precise control of electrodeposition proces of Ag nanoparticles.

scholarly journals Strongly confined localized surface plasmon resonance (LSPR) bands of Pt, AgPt, AgAuPt nanoparticles

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Mao Sui ◽  
Sundar Kunwar ◽  
Puran Pandey ◽  
Jihoon Lee
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Morphology ◽  
Elemental Composition ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Growth Conditions ◽  
Localized Surface Plasmon ◽  
Resonance Modes ◽  
Tunable Range

Abstract Multi-metallic alloy nanoparticles (NPs) can enable the advanced applications in the energy, biology, electronics, optics and catalysis due to their multi-functionality, wide tunable range and electronic heterogeneity. In this work, various mono-, bi- and tri-metallic nanostructures composed of Ag, Au and Pt are demonstrated on transparent c-plane sapphire (0001) substrates and the corresponding morphological and optical characteristics are thoroughly investigated. The resulting Pt and AuPt NPs in this study demonstrate much enhanced LSPR responses as compared to the pure Pt NPs from the previous studies, which was contributed by the synergistic effect of Au and Pt and improved surface morphology. These results are sharply distinct in terms of surface morphology and elemental variability from those obtained by the dewetting of monometallic Ag, Au and Pt films under the similar growth conditions, which is due to the distinct dewetting kinetics of the bi-layer and tri-layer films. These NPs exhibit strongly enhanced localized surface plasmon resonance (LSPR) bands in the UV-VIS wavelengths such as dipolar, quadrupolar, multipolar and higher order resonance modes depending upon the size and elemental composition of NPs. The LSPR bands are much stronger with the high Ag content and gradually attenuated with the Ag sublimation. Furthermore, the VIS region LSPR bands are readily blue shifted along with the reduction of NP size. The Ag/Pt bi-layers and Ag/Au/Pt tri-layers are systematically dewetted and transformed into various AgPt and AgAuPt nanostructures such as networked, elongated and semispherical configurations by means of enhanced surface diffusion, intermixing and energy minimization along with the temperature control. The sublimation of Ag atoms plays a significant role in the structural and elemental composition of NPs such that more isolated and semispherical Pt and AuPt NPs are evolved from the AgPt and AgAuPt NPs respectively.

Localized surface plasmon resonance sensing properties of photocatalytically prepared Ag/TiO2 films

2010 ◽  
Vol 25 (1) ◽  
pp. 117-123 ◽  
Author(s):  
Gang Chang ◽  
Ichiro Tanahashi ◽  
Munetaka Oyama
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Indium Tin Oxide ◽  
Ag Nanoparticles ◽  
Localized Surface Plasmon Resonance ◽  
Uv Light ◽  
Localized Surface Plasmon ◽  
Mixed Aqueous Solution ◽  
Coated Glass Slide

Photocatalytic deposition of Ag nanoparticles from a mixed aqueous solution of AgNO3 and polyvinylpyrrolidone (PVP) onto TiO2 film supported on indium-tin oxide-coated glass slide (Ag/TiO2 film) was carried out by using UV light irradiation. The size and shape of the Ag nanoparticles were controlled by the addition of PVP during the photodeposition. In the optical absorption spectra of the Ag/TiO2 film, the localized surface plasmon resonance (LSPR) absorption of the Ag nanoparticles was observed. When the film was immersed in various kinds of alcohols with the refractive index at 20°C (), ranging between 1.3292 and 1.4103, the peak LSPR absorption was shifted to longer wavelengths and the peak absorbance increased with increasing . The spectral change of the Ag/TiO2 film with larger spherical Ag nanoparticles was more prominent than that with smaller ones.

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