The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Magnetic iron oxide nanoparticles: synthesis, characteristics, magnetic behavior, and biomedical applications
Author:	Fu, Chengyin
View Online:	njit-etd2012-083 (x, 54 pages ~ 3.3 MB pdf)
Department:	Committee for the Interdisciplinary Program in Materials Science and Engineering
Degree:	Master of Science
Program:	Materials Science and Engineering
Document Type:	Thesis
Advisory Committee:	Ravindra, N. M. (Committee chair) Ahn, Ken Keunhyuk (Committee member) Jaffe, Michael (Committee member)
Date:	2012-05
Keywords:	Magnetic iron oxide nanoparticles Biomedical applications Magnetite Maghemite
Availability:	Unrestricted
Abstract:	Magnetic iron oxide nanoparticles are attracting increasing attention due to their interesting properties that can be applied in a great number of applications such as catalysis and biomedicine. This thesis focuses on the synthesis, characteristics, and biomedical applications of iron oxide nanoparticles. The two most common iron oxides, including magnetite and maghemite, are discussed in this thesis. For most of their applications, the magnetic behavior of iron oxide nanoparticles in a fluid is very important, especially, the high gradient magnetic separation of the particles from a nonmagnetic liquid medium, such as blood in the human body. A 2D model, which represents a slice through the center of a spherical particle in a fluid, is created in this thesis, and only the magnetic force and the drag force are taken into consideration. The magnetization of the particle is calculated by using the Langevin function, and the fluid drag force is calculated by using the Navier-Stokes equation. The trajectory function for this model is calculated, and the trajectories are drawn for specific cases.