Journal ArticleDOI
Dielectric function and plasma resonances of small metal particles
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Using the simple model of electrons in a box, a dielectric function is derived which should be appropriate for small metal particles as mentioned in this paper. But the model is not suitable for all metal particles.Abstract:
Using the simple model of electrons in a box, a dielectric function is derived which should be appropriate for small metal particles. This dielectric function is used to examine quantum size effects in the optical absorption spectra. For very small particles of uniform size and shape, the plasma resonance absorption should shift and broaden and should show fine structure corresponding to transitions between discrete conduction band energy levels. The size dependence of the shift and broadening was measured and found to be in quantitative agreement with theory.read more
Citations
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Chemistry and properties of nanocrystals of different shapes.
TL;DR: The interest in nanoscale materials stems from the fact that new properties are acquired at this length scale and, equally important, that these properties are equally important.
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Spectral properties and relaxation dynamics of surface plasmon electronic oscillations in gold and silver nanodots and nanorods
TL;DR: In this paper, the surface plasmon absorption of noble metal nanoparticles was studied and the effects of size, shape, and composition on the plasman absorption maximum and its bandwidth were discussed.
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Interparticle Coupling Effect on the Surface Plasmon Resonance of Gold Nanoparticles: From Theory to Applications
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Optical properties and ultrafast dynamics of metallic nanocrystals.
Stephan Link,Mostafa A. El-Sayed +1 more
TL;DR: In this review, some of the properties of individual and some assembled metallic nanoparticles with a focus on their interaction with cw and pulsed laser light of different energies are discussed.
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Plasmonic nanoantennas: fundamentals and their use in controlling the radiative properties of nanoemitters.
TL;DR: Plasmonic resonances in nanoantennas overcome constraints on the resolution to which an object can be imaged, as well as the size of the transverse cross section of efficient guiding structures to the wavelength dimension, allowing unprecedented control of light-matter interactions within subwavelength volumes.
References
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Journal ArticleDOI
Colours in Metal Glasses and in Metallic Films
TL;DR: In this paper, it was shown that the presence of many of these minute spheres to a wave-length of light in the glass will account for all the optical properties of "regular" gold ruby glass, and that the irregularities in colour and in polarisation effects sometimes exhibited by gold glass are due to excessive distance between consecutive gold particles or to excessive size of such particles.
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Electronic Properties of Metallic Fine Particles. I.
TL;DR: The level spacing of quantized electronic states becomes fairly large in very fine particles as mentioned in this paper, and the thermal properties may show considerable deviations from the normal bulk values for such fine particles.
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The limitation of electron mean free path in small silver particles
U. Kreibig,C. v. Fragstein +1 more
TL;DR: In this article, absorption measurements of spherical silver particles suspended as colloid in photosensitive glasses were performed and it was shown that the absorption coefficient at the wavelength of absorption peak (λ = 0.405 μ) remains constant, whereas the refractive index increases by about a factor of 5 when the particle size decreases.
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Electronic Properties of Fine Metallic Particles. II. Plasma Resonance Absorption
Arisato Kawabata,Ryogo Kubo +1 more
TL;DR: In this article, the linear response theory was used to describe the quantum-mechanical treatment of fine metallic particles with a peak optical absorption around the frequency of the plasma mode and the absorption is broadened by coupling of the plasmas oscillation with the individual electronic states which are quantized in discrete levels.