[CCoE Notice] Master's thesis defense on July 15 at 10 am in ChmeE Conf Room

[Khator, Suresh]

Dear Colleagues,

 

Julia Litvinov is defending her Master's thesis on July 15, 2010 at 10
am in Chemical Engineering Conference Room.  If any of your graduate
students are interested in her research topic, please encourage them to
attend.  Here are the details of her thesis:

 

Fabrication and Corrosion protection of magnetic particles for
biomedical applications

 

Ion-beam aperture-array lithography was used to fabricate
micro-particles with engineered magnetic properties.  In this top-down
fabrication method, a massive array of helium beamlets formed by a
commercial metal mesh stencil mask writes particle shapes into
polymethylmethacrylate resist.  A 5mm initial mesh size was shrunk as
necessary via conformal copper deposition.  Thermal  evaporation of
gold/permalloy/gold was use to form particles in the patterned resist.
Vibration sample magnetometry was used to characterize the particles'
magnetic properties.  A pinhole-free 25nm-thick alumina coating was
developed to protect the particles against corrosive environments, such
as phosphate buffered saline, to enable biomedical applications.
Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray
photoelectron spectroscopy, and X-ray diffraction were used to
characterize the alumina coating. Electrochemical deposition of copper
through the alumina film allowed monitoring for presence (or absence) of
any pinholes.

 

Major Professor: Richard C. Willson, Professor, Chemical & Bio-molecular
Engineering

Suresh Khator

_______________________________________________________

Suresh K. Khator, Ph.D., P.E.                         Phone:
713-743-4205         

Associate Dean, College of Engineering    Fax: 713-743-4214

University of Houston                                     Email:
skhator at uh.edu   

E421 Engineering Bldg 2                                www.egr.uh.edu/ie

Houston, TX 77204-4008

 

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