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Permanent link (DOI): https://doi.org/10.7939/R31M8D

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Fabrication, modeling and experimental study of bending deformation of micro-ferrogel fibers in a non-uniform magnetic field Open Access

Descriptions

Other title
Subject/Keyword
micro-ferrogel
magnetic-field
fabrication
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Khaleque, Tasnuva
Supervisor and department
Moussa, Walied (Mechanical Engineering)
Examining committee member and department
Adeeb, Samer (Civil and Environmental Engineering)
Ma, Yongsheng (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2009-10-20T22:58:28Z
Graduation date
2009-11
Degree
Master of Science
Degree level
Master's
Abstract
Hydrogel smart polymers have achieved a great attention in the research area of drug delivery, MEMS/NEMS, microfluidics and sensor design because of their responsiveness to various environmental stimuli- pH, temperature, light, electric field, enzyme etc. This thesis presents the modeling, fabrication and study of the bending deformation of magnetic field sensitive hydrogel micro fibers called ferrogels. The objective is to externally actuate the ferrogel fibers by applying magnetic field, for the application of targeted drug delivery inside the alveoli of a human lung. Prediction of the bending deformation of the ferrogel fibers is done by the Multiphysics Finite Element Modeling in an Arbitrary Lagrangian Eulerian (ALE) framework. Ferrogel micro fibers are fabricated and the bending deforma-tion is studied experimentally by varying the aspect ratio of the fibers, volume fraction of the magnetic particle content of the fibers and the magnetic field strength. The numerical and experimental results are compared. This is the first attempt to numerically predict the bending deformation of ferrogel micro-fibers.
Language
English
DOI
doi:10.7939/R31M8D
Rights
License granted by Tasnuva Khaleque (khaleque@ualberta.ca) on 2009-10-20T21:24:31Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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