Optical properties of discontinuous gold films

Norrman, S.; Andersson, T. G.; Granqvist, Claes‐Göran; Hunderi, O.

doi:10.1103/physrevb.18.674

Cited by 259 publications

(109 citation statements)

References 109 publications

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“…10 The estimated sizes in the present study are somewhat large compared with that reported. This difference is probably due to the differences in the film deposition conditions.…”

Section: Resultscontrasting

confidence: 50%

Ultraviolet Photoelectron Yield Spectra of Thin Gold Films Measured in Air

1991

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Ultraviolet photoelectron yield (UPY) spectra of gold evaporated on glass substrates were obtained in air. Photoelectron emission threshold energies E of the gold films were determined from the UPY spectra. The Et values were greater for thinner films, indicating that the size of the deposited Au island is larger for thicker film. The size could be estimated from the Et value. This method allows us to determine the Au film thickness of a few nanometers and the size of the small Au island without the need of high vacuum technology.

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“…10 The estimated sizes in the present study are somewhat large compared with that reported. This difference is probably due to the differences in the film deposition conditions.…”

Section: Resultscontrasting

confidence: 50%

Ultraviolet Photoelectron Yield Spectra of Thin Gold Films Measured in Air

1991

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“…The gold films were non-uniform, as expected from their small mass thickness. [124][125][126][127] The substrates were maintained at 450 ± 10 or 550 ± 10 °C during the depositions, as estimated from thermocouple-based recordings, and were rotated at 30 to 60 rpm. The substrate-target separation was 13 cm, and the angle between the normals to the substrate and target was 50°.…”

Section: Sample Preparationmentioning

confidence: 99%

Thermochromic VO2 nanorods made by sputter deposition: Growth conditions and optical modeling

Namura

Suzuki

et al. 2013

Journal of Applied Physics

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Thermochromic VO 2 nanorods made by sputter deposition: Growth conditions and optical modeling. Reactive dc magnetron sputtering onto glass-based substrates yielded deposits of thermochromic VO 2 with well-developed nanorods and nanowires. Their formation was promoted by high substrate temperature (above ~500 °C), sufficient film thickness, proper inlet of the reactive gas, dispersed gold "seeds" and pronounced substrate roughness. Rutherford back scattering ascertained mass thicknesses, scanning electron microscopy depicted the nanostructures, and glancing incidence Xray diffraction proved that single-phase VO 2 was normally formed. Journal of Applied PhysicsSpectrophotometric measurements of total and diffuse transmittance and reflectance on VO 2 thin films, at room temperature and ~100 °C, allowed us to determine complex dielectric functions below and above the "critical" temperature for thermochromic switching (~68 °C). These data were then used in computations based on the Bruggeman effective medium theory applied to randomly oriented prolate spheroidal structural units to derive the optical properties of the deposits.Experimental and computed data on spectral absorptance were found to be in good qualitative agreement.

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“…For light transmission through gold films, it has been shown that there is a linear relationship between the position of the maximum in the UV-vis transmittance and the thickness of the gold film. 35 For supported catalysts, we found that, when preparing gold catalysts at different pH values, the average gold particle size (from TEM) and the position of the absorbance maximum were connected: as the average particle size decreased, the absorbance maximum shifted to a lower wavelength. The UV-vis absorbance can therefore be used as a nice method to determine sintering of the gold particles.…”

Section: Catalyst Preparation and Characterizationmentioning

confidence: 90%

Mechanistic Study into the Direct Epoxidation of Propene over Gold/Titania Catalysts

2005

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The epoxidation of propene over gold/titania based catalysts was investigated using different techniques. Infrared spectroscopic information showed that one key step in the reaction mechanism is a reaction catalyzed by gold between titania surface groups and propene. In this reaction step, a bidentate propoxy species is formed on titania. This species adsorbs strongly on the catalyst, and it is the same species which is formed when propene oxide adsorbs on titania. Gravimetrical adsorption experiments and catalytic tests show that product adsorption and desorption are important factors determining the catalytic activity and the catalyst stability. By combining the information from different techniques, a kinetic mechanism is proposed.

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Optical properties of discontinuous gold films

Cited by 259 publications

References 109 publications

Ultraviolet Photoelectron Yield Spectra of Thin Gold Films Measured in Air

Ultraviolet Photoelectron Yield Spectra of Thin Gold Films Measured in Air

Thermochromic VO2 nanorods made by sputter deposition: Growth conditions and optical modeling

Mechanistic Study into the Direct Epoxidation of Propene over Gold/Titania Catalysts

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