Absorption spectrum of clusters of spheres from the general solution of Maxwell's equations. III. Heterogeneous spheres

Gerardy, J; Ausloos, Marcel

doi:10.1103/physrevb.30.2167

Cited by 22 publications

(14 citation statements)

References 35 publications

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“…The scattering coefficients for each of the N spheres is solved by considering a system of linear equations. 60 The electric fields and optical cross-sections presented here were calculated via the GMT using input parameters from the geometry of the Au NP chains provided by SEM. The geometry of each assembly was reproduced by an image analysis algorithm based on the Hough transform, allowing the user to determine both the diameter and location of individual constituent NPs.…”

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confidence: 99%

Plasmonic polymers unraveled through single particle spectroscopy

et al. 2014

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Plasmonic polymers are quasi one-dimensional assemblies of nanoparticles whose optical responses are governed by near-field coupling of localized surface plasmons. Through single particle extinction spectroscopy correlated with electron microscopy, we reveal the effect of the composition of the repeat unit, the chain length, and extent of disorder on the energies, intensities, and line shapes of the collective resonances of individual plasmonic polymers constructed from three different sizes of gold nanoparticles. Our combined experiment and theoretical analysis focuses on the superradiant plasmon mode, which results from the most attractive interactions along the nanoparticle chain and yields the lowest energy resonance in the spectrum. This superradiant mode redshifts with increasing chain length until an infinite chain limit, where additional increases in chain length cause negligible change in the energy of the superradiant mode. We find that, among plasmonic polymers of equal width comprising nanoparticles with different sizes, the onset of the infinite chain limit and its associated energy are dictated by the number of repeat units and not the overall length, of the polymer. The intensities and linewidths of the superradiant mode relative to higher energy resonances, however, differ as the size and number of nanoparticles are varied in the plasmonic polymers studied here. These findings provide general guidelines for engineering the energies, intensities, and line shapes of the collective optical response of plasmonic polymers constructed from nanoparticles with sizes ranging from a few tens to one hundred nanometers.

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confidence: 99%

Plasmonic polymers unraveled through single particle spectroscopy

et al. 2014

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“…It is known 1,6 that (i) the Bizen clay contains iron, the most important coloring element, at a relatively high content of ∼3 wt% as Fe 2 O 3 1,7 and that (ii) the stoneware sensitively changes its color with the oxygen partial pressure in a kiln because the iron changes its chemical state 6 . Further, the color tone also depends on the size and packing density of iron‐containing particles also 8,9 . Here we report the unexpected discovery that metallic iron, and also its phosphide, form under the conditions commonly used to fire the stoneware under relatively low oxygen partial pressures.…”

Section: Introductionmentioning

confidence: 78%

“…6 Further, the color tone also depends on the size and packing density of iron-containing R. French-contributing editor particles also. 8,9 Here we report the unexpected discovery that metallic iron, and also its phosphide, form under the conditions commonly used to fire the stoneware under relatively low oxygen partial pressures.…”

Section: Introductionmentioning

confidence: 91%

Effects of Rice Straw on the Color and Microstructure of Bizen, a Traditional Japanese Stoneware, as a Function of Oxygen Partial Pressure

Kusano¹,

Doi²,

Fukuhara³

et al. 2009

Journal of the American Ceramic Society

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The effects of oxygen partial pressure during thermal treatment on the color and microstructure of Bizen, a traditional Japanese stoneware, were studied through model experiments using clay pellets covered lightly with rice straw as a coloring assistant. When heated in flowing nitrogen, the model pellet turned blackish owing to the formation of α‐Fe particles coated with graphite. However, schreibersite (Fe3P), which is also blackish, was formed specifically on the pellet surface in direct contact with the straw. The rice straw seems to have generated a strongly reducing atmosphere, strong enough for the metallization to α‐Fe, and also to have provided phosphorus through contact. When oxygen content in the surrounding gas atmosphere was raised to N2/O2=99/1, the pellet surface turned yellowish brown because the main coloring material was Fe3+‐containing mullite. At oxygen contents of N2/O2=98/2 or more, the formation of hematite (α‐Fe2O3) pushed the color to deep red.

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“…However, if the particles of the cluster and the object to be trapped are spherical, the solution can be found in a in a semi-analytical way using the generalized Mie theory [9]. Briefly, the incident, scattered and internal fields are expanded in vector spherical harmonics, that are combination of spherical harmonics and Bessel functions.…”

Section: Electromagnetic Response Of Particlesmentioning

confidence: 99%

“…Therefore, the higher accuracy is required, the larger the size of the system of equations and thus, the computational load. The expansion coefficients for an incident plane wave are well known [9]. Generally speaking, for an arbitrary field distribution is always possible to find the expansion coefficients numerically [10].…”

Section: Electromagnetic Response Of Particlesmentioning

confidence: 99%

Optical forces induced by metal nanoparticle clusters

Sancho‐Parramon

Bosch

2013

Appl. Phys. A

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The strong field localization generated between closely placed metal particles excited by electromagnetic radiation induces intense forces on small polarizable objects. In this study we investigate the optical forces that can be generated in the vicinity of metal nanoparticle clusters using fully electrodynamic numerical simulations. The influence of the cluster configuration as well as of the excitation parameters is analyzed.

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Absorption spectrum of clusters of spheres from the general solution of Maxwell's equations. III. Heterogeneous spheres

Cited by 22 publications

References 35 publications

Plasmonic polymers unraveled through single particle spectroscopy

Plasmonic polymers unraveled through single particle spectroscopy

Effects of Rice Straw on the Color and Microstructure of Bizen, a Traditional Japanese Stoneware, as a Function of Oxygen Partial Pressure

Optical forces induced by metal nanoparticle clusters

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