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Crystals 2016, 6(8), 84; doi:10.3390/cryst6080084

A Novel Approach to Quantitatively Assess the Uniformity of Binary Colloidal Crystal Assemblies

1
Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Burwood Road, Hawthorn, Victoria 3122, Australia
2
Department of Telecommunications, Electrical, Robotics and Biomedical Engineering, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Burwood Road, Hawthorn, Victoria 3122, Australia
3
CSIRO Manufacturing, Bayview Avenue, Clayton, Victoria 3168, Australia
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Qingfeng Yan
Received: 1 June 2016 / Revised: 7 July 2016 / Accepted: 19 July 2016 / Published: 26 July 2016
(This article belongs to the Special Issue Colloidal Crystals)
View Full-Text   |   Download PDF [4327 KB, uploaded 26 July 2016]   |  

Abstract

Colloidal self-assembly into highly ordered binary systems represents a versatile and inexpensive approach to generate well defined surface topographical features with submicron resolution. In addition, the use of surface-functionalized particles where each particle bears a different surface functionality enables the generation of highly resolved surface chemical patterns. Such topographical, as well as chemical features, are of great interest in biomaterials science particularly in the context of investigating and controlling the cellular response. While colloidal crystals have been used to generate a wide range of surface patterns, it has not been possible until now to quantitatively describe the degree of uniformity within such systems. In the present work we describe a novel approach to quantitatively assess the uniformity within binary colloidal assemblies based on image processing methods, primarily the Circular Hough Transform and distance calculations. We believe that the methodology presented here will find broad application in the field of colloidal crystals to quantitatively describe the integrity and homogeneity of assemblies. View Full-Text
Keywords: colloidal crystal assembly; degree of uniformity/homogeneity; Circular Hough transformation colloidal crystal assembly; degree of uniformity/homogeneity; Circular Hough transformation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Koegler, P.; Dunn, M.; Wang, P.-Y.; Thissen, H.; Kingshott, P. A Novel Approach to Quantitatively Assess the Uniformity of Binary Colloidal Crystal Assemblies. Crystals 2016, 6, 84.

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