Effect of particle shape on the effective dielectric response of nanocomposite close to the percolation threshold

Xu, Peng; Li, Zhen‐Ya

doi:10.1016/j.physb.2003.11.077

Cited by 7 publications

(3 citation statements)

References 26 publications

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“…Therefore, the thickness values below the linear growth increase are indicative rather than absolute. Optical phenomena due to the initial island growth of the metal can arise and make the interpretation of the data very challenging, such as capacitive behavior of the islands, scattering due to size effects or phonon emission to name a few [67,[74][75][76].…”

Section: B-spline Fit Reproducibility and Goodness Of The Fit For Pt Ru And Pdmentioning

confidence: 99%

In situspectroscopic ellipsometry during atomic layer deposition of Pt, Ru and Pd

Leick

Weber

Mackus

et al. 2016

J. Phys. D: Appl. Phys.

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The preparation of ultra-thin platinum-group metal films, such as Pt, Ru and Pd, by atomic layer deposition (ALD) was monitored in situ using spectroscopic ellipsometry in the photon energy range of 0.75-5 eV. The metals' dielectric function was parametrized using a 'flexible' Kramers-Kronig consistent dielectric function because it was able to provide accurate curve shape control over the optical response of the metals. From this dielectric function, it was possible to extract the film thickness values during the ALD process. The important ALD process parameters, such as the nucleation period and growth per cycle of Pt, Ru and Pd could be determined from the thickness evolution. In addition to process parameters, the film resistivity in particular could be extracted from the modeled dielectric function. Spectroscopic ellipsometry thereby revealed itself as a feasible and valuable technique to be used in research and development applications, as well as for process monitoring during ALD.

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Section: B-spline Fit Reproducibility and Goodness Of The Fit For Pt Ru And Pdmentioning

confidence: 99%

In situspectroscopic ellipsometry during atomic layer deposition of Pt, Ru and Pd

Leick

Weber

Mackus

et al. 2016

J. Phys. D: Appl. Phys.

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“…The CTE of epoxy can be greatly reduced with the incorporation of high thermal conductive fillers, such as metal powder, carbon black, and other fillers, but generally required high filler loading, which leads to another obstacle, viscosity increment on the polymer matrix, which resulted in difficulties during processing. Gathering from previous studies, the filler loading required to give tuneable effect on the electrical and thermal conductivity of epoxy resin will require 10-20 vol.% of filler loading [13,14], depending on several 2 International Journal of Polymer Science factors, including processing methodology, particle size of filler [15][16][17][18], particle distribution [19], and particle aspect ratio [20,21]. Nanofillers, such as graphene nanoplatelets, are one of the promising steps to greatly reduce the filler loading, down to 0.01-1 vol.%, as reported previously, due to its 2D geometry and particle size, hence greatly reducing the percolation threshold [6,22] and thermal conductivity [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Assisted Bath Sonication on the Mechanical and Thermal Deformation Behaviours of Graphene Nanoplatelets Filled Epoxy Polymer Composites

Phua

Teh

Ghani

et al. 2016

International Journal of Polymer Science

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Graphene nanoplatelets (GNP) filled epoxy composites ranged from 0.2 to 5 vol.% were prepared in this study using simple heat assisted bath sonication for better GNP dispersion and exfoliation. The effects of GNP filler loading via heat assisted bath sonication on the mechanical properties and thermal deformation behaviour were investigated. Improvements on flexural strength and fracture toughness up to 0.4 vol.% filler loading were recorded. Further addition of GNP filler loading shows a deteriorating behaviour on the mechanical properties on the composites. The bulk electrical conductivity of the epoxy composites is greatly improved with the addition of GNP filler loading up to 1 vol.%. The thermal expansion of epoxy composites is reduced with the addition of GNP; however poor thermal stability of the composites is observed.

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“…Although the composites employing conductive fillers have made promising progress in the dielectric property [1][2][3][4][5], ceramic/polymer composites are still attractive to researchers because of simple and convenient process, cheap cost and excellent property, such as low dielectric loss, low conductivity and leakage current. In these studies [6][7][8][9][10][11], different systems have been demonstrated in order to obtain the desirable dielectric materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of BaTiO3 size on dielectric property of BaTiO3/PVDF composites

et al. 2007

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The BaTiO 3 /polyvinylidene fluoride (BaTiO 3 / PVDF) polymer-based composites with different size and concentration of BaTiO 3 particles were fabricated via a simple physical mixing and subsequently hot-press processing. Effect of the filler size and frequency on the dielectric properties of the BaTiO 3 /PVDF binary composites was discussed. The result shows that the BaTiO 3 size has an effect on the morphology of the BaTiO 3 /PVDF composites. The composites with 0.2 and 0.3 μm BaTiO 3 exhibit high dielectric permittivity than those with 0.4 and 0.5 μm BaTiO 3 . The composite with 0.4 μm BaTiO 3 has a minimum dielectric permittivity except one with 0.1 μm BaTiO 3 . Dielectric loss of the BaTiO 3 /PVDF binary composites changes slightly with the BaTiO 3 sizes. The ternary BaTiO 3 /PVDF composites with 0.1 and 0.7 μm BaTiO 3 in coexistence exhibit good dielectric properties. As a result, the BaTiO 3 /PVDF ternary composites in this study may have a promising application as dielectric material in embedded capacitor.

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Effect of particle shape on the effective dielectric response of nanocomposite close to the percolation threshold

Cited by 7 publications

References 26 publications

In situspectroscopic ellipsometry during atomic layer deposition of Pt, Ru and Pd

In situspectroscopic ellipsometry during atomic layer deposition of Pt, Ru and Pd

Effect of Heat Assisted Bath Sonication on the Mechanical and Thermal Deformation Behaviours of Graphene Nanoplatelets Filled Epoxy Polymer Composites

Effect of BaTiO3 size on dielectric property of BaTiO3/PVDF composites

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