Optical properties of ultrafine gold particles

Granqvist, Claes G.; Hunderi, O.

doi:10.1103/physrevb.16.3513

Cited by 519 publications

(217 citation statements)

References 116 publications

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“…The optical properties of such a composite layer can be described with effective medium theory, assuming nanoparticle sizes that are much smaller than the wavelength. In the same manner as in earlier work, 4,72,73 we derive an effective dielectric function ε MG from Maxwell-Garnett theory 74 according to ,…”

Section: Nanothermochromics: Vo 2 Nanospheres Embedded In a Dielecmentioning

confidence: 99%

Thermochromic undoped and Mg-doped VO₂ thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Niklasson

Granqvist

2014

Journal of Applied Physics

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Undoped and Mg-doped thermochromic VO 2 films with atom ratios z ≡ Mg/(Mg + V) of 0 ≤ z < 0.21 were deposited by reactive DC magnetron sputtering onto heated glass and carbon substrates. Elemental compositions were found by Rutherford backscattering spectrometry. Optical constants were determined from transmittance and reflectance measurements and were used for modeling the optical properties of thin films and dilute nanoparticle composite layers below and above the critical temperature for thermochromic switching between a low-temperature infrared transparent state and a high-temperature infrared reflecting or absorbing state. Mgdoped films showed superior luminous transmittance T lum and solar transmittance modulation ΔT sol compared to undoped VO 2 films, and both of these parameters could be further enhanced by anti-reflection. VO 2 -containing nanocomposites had much larger values of T lum and ΔT sol than VO 2 -based films. Mg-doping was found to erode the properties of the nanocomposites. Approximate performance limits are given on T lum and ΔT sol for thermochromic VO 2 films, with and without Mg doping and antireflection coating, and also for VO 2 -containing dilute nanocomposites.--

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Section: Nanothermochromics: Vo 2 Nanospheres Embedded In a Dielecmentioning

confidence: 99%

Thermochromic undoped and Mg-doped VO₂ thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Niklasson

Granqvist

2014

Journal of Applied Physics

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“…-Special surface plasmon modes can be excited optically in small metallic particles [1][2][3][4][5][6][7][8]. Their investigation has become a widely accepted method in small particle physics 49] and has revealed information concerning the transition from the molecular state to the bulky solid.…”

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confidence: 99%

Anomalous Frequency and Temperature Dependence of the Optical Absorption of Small Gold Particles

Крейбиг

1977

J. Phys. Colloques

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“…1 can be described by effective medium theory, provided that the nanoparticles are much smaller than the wavelength of the incident radiation so that they are nonscattering. Following earlier work [40][41][42][43] we derive an effective dielectric function e MG by a)…”

Section: Theory and Input Parametersmentioning

confidence: 99%

Nanothermochromics with VO2-based core-shell structures: Calculated luminous and solar optical properties

Li¹,

Niklasson²,

Granqvist³

2011

Journal of Applied Physics

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105

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Composites including VO 2 -based thermochromic nanoparticles are able to combine high luminous transmittance T lum with a significant modulation of the solar energy transmittance DT sol at a "critical" temperature in the vicinity of room temperature. Thus nanothermochromics is of much interest for energy efficient fenestration and offers advantages over thermochromic VO 2 -based thin films. This paper presents calculations based on effective medium theory applied to dilute suspensions of core-shell nanoparticles and demonstrates that, in particular, moderately thin-walled hollow spherical VO 2 nanoshells can give significantly higher values of DT sol than solid nanoparticles at the expense of a somewhat lowered T lum . This paper is a sequel to a recent publication [S.-Y. Li, G. A. Niklasson, and C. G. Granqvist, J. Appl. Phys. 108, 063525 (2010)].

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Optical properties of ultrafine gold particles

Cited by 519 publications

References 116 publications

Thermochromic undoped and Mg-doped VO₂ thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Thermochromic undoped and Mg-doped VO₂ thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Anomalous Frequency and Temperature Dependence of the Optical Absorption of Small Gold Particles

Nanothermochromics with VO2-based core-shell structures: Calculated luminous and solar optical properties

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Optical properties of ultrafine gold particles

Cited by 519 publications

References 116 publications

Thermochromic undoped and Mg-doped VO2 thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Thermochromic undoped and Mg-doped VO2 thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Anomalous Frequency and Temperature Dependence of the Optical Absorption of Small Gold Particles

Nanothermochromics with VO2-based core-shell structures: Calculated luminous and solar optical properties

Contact Info

Product

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Thermochromic undoped and Mg-doped VO₂ thin films and nanoparticles: Optical properties and performance limits for energy efficient windows

Thermochromic undoped and Mg-doped VO₂ thin films and nanoparticles: Optical properties and performance limits for energy efficient windows