Sedimentation and diffusion in an experimental hard-sphere-plus-dipolar colloidal system

Newman, Hugh D. (2013) Sedimentation and diffusion in an experimental hard-sphere-plus-dipolar colloidal system. Masters thesis, Memorial University of Newfoundland.

[img] [English] PDF - Accepted Version
Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.

Download (10Mb)

Abstract

Laser scanning confocal microscopy was used to image a thin sediment of a Brownian colloidal suspension of PMMA spheres in a decalin/TCE solvent. The sediment is imaged in its entirety in 3-dimensions, as well as with 2-dimensional time-series captured incrementally throughout the sediment. The structure and dynamics are analysed and compared to a hard-sphere system. AC electric fields are applied parallel to gravity to attempt to induce a dipolar interaction in the colloidal spheres. If the system is confirmed to be hard-sphere like, then this allows comparison of the system with applied fields to a hard-sphere-plus-dipolar system.

Item Type: Thesis (Masters)
URI: http://research.library.mun.ca/id/eprint/11136
Item ID: 11136
Additional Information: Includes bibliographical references (leaves 105-109).
Department(s): Science, Faculty of > Physics and Physical Oceanography
Date: 2013
Date Type: Submission
Library of Congress Subject Heading: Colloids--Properties; Colloids--Diffusion rate; Brownian movements; Confocal microscopy; Scanning systems.

Actions (login required)

View Item View Item

Downloads

Downloads per month over the past year

View more statistics