Electron dynamics and surface plasmon resonance nonlinearities in metal nanoparticles

Fatti, Natalia Del; Vallée, Fabrice; Flytzanis, C.; Hamanaka, Yasushi; Nakamura, Arao

doi:10.1016/s0301-0104(99)00304-3

Cited by 140 publications

(177 citation statements)

References 36 publications

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“…The resonance was also slightly blue-shifted, indicating that the real part of the permittivity can also be affected for such a small particle size [34]. Similar results have been obtained for silver particles in the 3-13 nm range by another group [35]. For spherical particles in the 20 nm range investigated here, only the imaginary part of the permittivity seems to be affected by the particle size [8,33].…”

Section: 2supporting

confidence: 80%

Influence of the cross section and the permittivity on the plasmon-resonance spectrum of silver nanowires

Kottmann

Martin

2001

Applied Physics B: Lasers and Optics

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We investigate the plasmon resonances for silver nanowires with a non-regular cross section. To study the relationship between the cross section and the spectrum of the plasmon resonances, we consider cross sections evolving from a rectangular shape to a triangular one. In particular, we study the influence of the sharpness of a corner on the near-field enhancement at the vicinity of a particle and discuss its implications for surface-enhanced Raman scattering. We also investigate the influence of the absorption on the plasmon-resonance spectrum and on the near-field enhancement.

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Section: 2supporting

confidence: 80%

Influence of the cross section and the permittivity on the plasmon-resonance spectrum of silver nanowires

Kottmann

Martin

2001

Applied Physics B: Lasers and Optics

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“…The origin of the resonance is attributed to the collective oscillation of free conduction electrons induced by an interacting electromagnetic field and the surface plasmon exists at the surface of the nanoparticle faced on the matrix. The resonant condition is given by the following equation: 5,17) …”

Section: Resultsmentioning

confidence: 99%

Copper Nanoparticle Composites in Insulators by Negative Ion Implantation for Optical Application

et al. 2002

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Steady-state and laser-induced transient surface plasmon bands of copper nanoparticle composites, fabricated by ion implantation, were studied by optical measurements. Negative ion implantation has been applied to generate the Cu nanoparticles with a narrow distribution in amorphous SiO 2 , MgO2.4(Al 2 O 3 ) and LiNbO 3 with various refractive indices. The Cu nanoparticles were embedded within a depth of 100 nm by implantation of 60 keV Cu − . The surface plasmon band in steady-state absorption spectra resulted from formation of nanoparticles in the various substrates and shifted to red with increasing refractive index of the matrix. Transient absorption was measured with the technique of pump-probe femtosecond spectroscopy. The transient bleaching band also shifted in parallel with the steady-state plasmon resonance. The bleaching recovered in several picoseconds due to energy transfer from the excited electron system to the phonon system via the electron-phonon interaction. The electron-phonon coupling constant, g, of Cu nanoparticles in amorphous SiO 2 was obtained to be a value of 2.4×10 16 W/m 3 K.

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“…These particles also possess large surface to volume (S/V) ratios, tunable plasmon resonance, pinholes that act as hot spots to further intensify EM surface energy and, as hollow structures, are known to be more sensitive to the refractive index of their surroundings than their solid counterparts [15,66,[81][82][83][84]. Additionally, their scattering and absorption cross-sections can be adjusted through synthesis to maximize efficiency for specific applications, and since the first hyperpolarizabilities (ˇ) of hollow nanoparticles are much larger than those of solid NPs having the same size, HGNs are excellent candidates for any application involving non-linear optics [85,86]. This review will focus on the current understanding of the plasmonic properties of HGNs and their various emerging applications.…”

Section: Metal Nanostructuresmentioning

confidence: 99%

“…It has been reported that low aspect ratio nanoparticles have g values comparable to their solid counterparts while high aspect ratio ones have enhanced g values [14,85,140,152,182]. In this work, as the aspect ratio increased from 3.5 to 9.5, the g value increased from 1.67 × 10 16 ± 0.22 to 3.33 ± 0.45 × 10 16 W m −3 k −1 , while solid NPs maintained an average g of 1.90 ± 0.20 × 10 16 W m −3 k −1 over a range of diameters (20,40, and 80 nm) [149].…”

Section: The Influence Of Laser Mode and Powermentioning

confidence: 99%

Controllable Cobalt Oxide/Au Hierarchically Nanostructured Electrode for Nonenzymatic Glucose Sensing

2016

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By electrodeposition and galvanic replacement reaction, we developed a facile, time-saving, cost-effective, and environmentally friendly, two-step synthesis route to obtain a controllable cobalt oxide/Au hierarchically nanostructured electrode for glucose sensing. The nanomaterials were characterized by transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy, meanwhile, the sensing performance was investigated by cyclic voltammetry and amperometric response. The results revealed that this novel electrode exhibited excellent electrocatalytic performance toward glucose oxidation, with a wide double-linear range from 0.2 μM to 20 mM and a low detection limit of 0.1 μM based on a signal-to-noise ratio of 3, which was mainly attributed to the ability of loading a small amount of Au with good electron conductivity on the surface of cobalt oxide nanosheets with large active surface area and synergistic electrocatalytic activity of Au and cobalt oxide toward glucose electrooxidation. This facile, sensitive, and selective glucose sensor is also proven to be suitable for the detection of glucose in human serum.

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Electron dynamics and surface plasmon resonance nonlinearities in metal nanoparticles

Cited by 140 publications

References 36 publications

Influence of the cross section and the permittivity on the plasmon-resonance spectrum of silver nanowires

Influence of the cross section and the permittivity on the plasmon-resonance spectrum of silver nanowires

Copper Nanoparticle Composites in Insulators by Negative Ion Implantation for Optical Application

Controllable Cobalt Oxide/Au Hierarchically Nanostructured Electrode for Nonenzymatic Glucose Sensing

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