Defects in Self Assembled Colloidal Crystals
Name
AMMNS003.pdf
Size
472.17 KB
Format
Adobe PDF
Checksum (MD5)
6ae46c22be339774f1597b4fd7fae52b
Author(s)
Koh, Yaw Koon
Teh, L. K.
Wong, Chee Cheong
Date Issued
January 2005
Series/Report no.
Advanced Materials for Micro- and Nano-Systems (AMMNS);
Abstract
Colloidal self assembly is an efficient method for making 3-D ordered nanostructures suitable for materials such as photonic crystals and macroscopic solids for catalysis and sensor applications. Colloidal crystals grown by convective methods exhibit defects on two different scales. Macro defects such as cracks and void bands originate from the dynamics of meniscus motion during colloidal crystal growth while micro defects like vacancies, dislocation and stacking faults are indigenous to the colloidal crystalline structure. This paper analyses the crystallography and energetics of the microscopic defects from the point of view of classical thermodynamics and discusses the strategy for the control of the macroscopic defects through optimization of the liquid-vapor interface.
Subjects
Colloidal self assembly
macroporous solids
photonic crystal
defects
Persistent DSpace Link
