Ordering Control of Self-Assembled Colloidal Crystals
Name
AMMNS005.pdf
Size
876.9 KB
Format
Adobe PDF
Checksum (MD5)
b5dfa03733f1a9da863a01b533ddf3c8
Author(s)
Koh, Yaw Koon
Chiang, Yet-Ming
Wong, Chee Cheong
Date Issued
January 2007
Series/Report no.
Advanced Materials for Micro- and Nano-Systems (AMMNS)
Abstract
Colloidal crystals are 3D nanostructures formed by self assembly of nanoparticles in suspension. The interaction forces between the colloid particles are expected to affect the ordering and the defect density in the resultant crystal. Based on this insight, the effect of ionic strength on the quality of the colloidal crystal is examined. It is found that at intermediate ionic strength, it is possible to get the best ordering of the colloidal crystal. The reason for this is explained based on previous work on the structural changes in an assembling colloidal crystal. A method for reducing the defect density in colloidal crystal will also be proposed.
Subjects
Colloid
Self Assembly
Persistent DSpace Link
