Impact of polydispersity on light propagation in colloidal photonic crystals

Mathieu Allard; Edward H. Sargent

doi:10.1063/1.1835533

Impact of polydispersity on light propagation in colloidal photonic crystals

Mathieu Allard^*, Edward H. Sargent

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

The influence of polydispersity, or variations in the size of particles, on the transmittance of slabs of colloidal photonic crystals is analyzed. A model based on simulated annealing simulates the assembly of particles with a given size distribution into a dense array. The model reveals the existence of a transition between ordered and random packing at a polydispersity between 3% and 4%; this transition is associated with large changes in optical properties, in the form of greatly increased scattering and reduced contrast associated with the transmittance in and out of the stop band. The predictions of the model correspond closely to experimental measurements.

Original language	English (US)
Pages (from-to)	5887-5889
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	24
DOIs	https://doi.org/10.1063/1.1835533
State	Published - Dec 13 2004

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1835533

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abstract = "The influence of polydispersity, or variations in the size of particles, on the transmittance of slabs of colloidal photonic crystals is analyzed. A model based on simulated annealing simulates the assembly of particles with a given size distribution into a dense array. The model reveals the existence of a transition between ordered and random packing at a polydispersity between 3% and 4%; this transition is associated with large changes in optical properties, in the form of greatly increased scattering and reduced contrast associated with the transmittance in and out of the stop band. The predictions of the model correspond closely to experimental measurements.",

author = "Mathieu Allard and Sargent, {Edward H.}",

note = "Funding Information: This work was supported by Nortel Networks, the Natural Sciences and Engineering Research Council of Canada through the Collaborative Research and Development Program, the Canada Foundation for Innovation, and the Canada Research Chairs Program. ",

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AU - Sargent, Edward H.

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Y1 - 2004/12/13

N2 - The influence of polydispersity, or variations in the size of particles, on the transmittance of slabs of colloidal photonic crystals is analyzed. A model based on simulated annealing simulates the assembly of particles with a given size distribution into a dense array. The model reveals the existence of a transition between ordered and random packing at a polydispersity between 3% and 4%; this transition is associated with large changes in optical properties, in the form of greatly increased scattering and reduced contrast associated with the transmittance in and out of the stop band. The predictions of the model correspond closely to experimental measurements.

AB - The influence of polydispersity, or variations in the size of particles, on the transmittance of slabs of colloidal photonic crystals is analyzed. A model based on simulated annealing simulates the assembly of particles with a given size distribution into a dense array. The model reveals the existence of a transition between ordered and random packing at a polydispersity between 3% and 4%; this transition is associated with large changes in optical properties, in the form of greatly increased scattering and reduced contrast associated with the transmittance in and out of the stop band. The predictions of the model correspond closely to experimental measurements.

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Impact of polydispersity on light propagation in colloidal photonic crystals

Abstract

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