Journal ArticleDOI
Optical Properties of Aggregated Silver Films
TLDR
In this paper, a modification of Schopper's model is proposed, based on the assumption that an aggregated film consists of particles in the shape of rotational ellipsoids.Abstract:
For interpreting the optical properties of aggregated metal films, a modification of Schopper’s model is proposed, based on the assumption that an aggregated film consists of particles in the shape of rotational ellipsoids. Instead of the distribution of the depolarizing factor f in gaussian fashion, which is assumed in Schopper’s model, the logarithmic normal distribution of the axial ratio γ of the ellipsoidal particles was assumed and the parameter σ (standard deviation of the distribution function) was introduced. Besides, the contributions of the dipole interaction between particles and the size-dependent optical constants of the particles were taken into account. Using this modified model, the observed values of silver films continuously measured by ellipsometry during deposition were analyzed and the two parameters, the mean axial ratio γ¯ and the standard deviation σ, were obtained as functions of film thickness. The results showed that as film grows, both γ¯ and σ increase monotonically. Good coincidence of the observed and the calculated absorption spectra from our model seems to show the validity of our modification.read more
Citations
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Journal ArticleDOI
Metasurfaces: From microwaves to visible
Stanislav Glybovski,Sergei A. Tretyakov,Pavel A. Belov,Yuri S. Kivshar,Yuri S. Kivshar,Constantin Simovski,Constantin Simovski +6 more
TL;DR: In this article, the basic physics and applications of planar metamaterials, often called metasurfaces, which are composed of optically thin and densely packed planar arrays of resonant or nearly resonant subwavelength elements, are reviewed.
Book
Surface enhanced vibrational spectroscopy
TL;DR: In this paper, the nature and properties of surface-enhanced vibrational spectra of molecules adsorbed on surfaces that can enhance the absorption and the emission of electromagnetic radiation are discussed.
Journal ArticleDOI
Theory of the linear and nonlinear optical properties of semiconductor microcrystallites
TL;DR: In this article, the optical properties of ideal semiconductor crystallites so small that they show quantum confinement in all three dimensions [quantum dots (QD's)] were analyzed theoretically, and the phonon broadening of these lines was considered.
Journal ArticleDOI
Optical properties of ultrafine gold particles
Claes-Göran Granqvist,O. Hunderi +1 more
Book ChapterDOI
Surface-Enhanced Infrared Absorption
TL;DR: In this article, surface-enhanced infrared absorption (SEIRA) was introduced to emphasize the similarities with surfaceenhanced Raman scattering (SERS), and the electromagnetic interactions of the incident photon field with the metal and molecules played predominant roles in this effect.
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.
Journal ArticleDOI
Optical Properties of Ag and Cu
H. Ehrenreich,H. R. Philipp +1 more
TL;DR: In this paper, experimental data for the optical constants of Ag and Cu extending to 25 eV are discussed in terms of three fundamental physical processes: (1) free-electron effects, (2) interband transitions, and (3) collective oscillations.
Journal ArticleDOI
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.
Journal ArticleDOI
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.