Conferences, Lectures, & Seminars
Events for September
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Electrode Materials for Neural Implants: Progresses and Challenges
Fri, Sep 10, 2004 @ 02:30 PM - 04:00 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
By David Zhou, Ph.D
Second Sight Medical Products, Inc
Sylmar, California This talk concentrates on recent developments in electrode materials for neural prostheses, especially Retinal prosthetic devices. Some common electrode materials and promising advanced electrode materials will be reviewed. Electrochemical Techniques for characterizing stimulation electrodes will be presented. The challenges in the development of chronic implantable electrode systems, especially using MEMS technology for the medical implants, will be discussed.
Location: Vivian Hall of Engineering (VHE) - 217
Audiences: Everyone Is Invited
Contact: Petra Pearce
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Interfacial Reactivity in Geochemical Systems
Fri, Sep 17, 2004 @ 02:30 PM - 04:00 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
THE DEPARTMENT OF MATERIALS SCIENCE & ENGINEERING PRESENTS A SEMINARbyProfessor James R. Rustad W.M. Keck Center for Active Visualization in the Earth Sciences University of California - DavisSPEAKING ONInterfacial Reactivity in Geochemical Systems ABSTRACT Acid base reactions occurring on mineral surfaces govern the fate and transport of contaminants in geochemical environments through their influence on sorption, redox, and ligand exchange reactions. During the last decade, geochemists have attempted to understand these reactions using site binding models incorporating crystallographic influences on site heterogeneity. We have used computational methods to explore the influence of site heterogeneity on chemical reactivity at multiple scales.
We find important influences persist up to length scales of 10's of
nanometers, making it almost impossible to predict the behavior of an interfacial system through knowledge of, for example, its crystal structure and crystal habit alone. Examples are drawn from experiment and theory on ligand exchange, redox and acid base reactions.**ALL FIRST-YEAR MATERIALS SCIENCE GRADUATE STUDENTS ARE REQUIRED TO ATTEND**
Location: Vivian Hall of Engineering (VHE) - 217
Audiences: Everyone Is Invited
Contact: Petra Pearce
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Tailoring the Properties of Carbon Nanotubes by Filling and Irradiation
Fri, Sep 24, 2004 @ 02:45 PM - 04:00 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Presented by:Professor Susan Sinnott, University of FloridaAbstract:Classical molecular dynamics simulations with many-body empirical potentials are used to study the chemical modification of carbon nanotube based materials. Chemical modification of nanotubes is important for tailoring their properties and ultimately controlling their adhesion to polymers in composites. The simulations focus on the effects of filling nanotubes with gases and clusters on their mechanical and thermal properties. Additionally, they show that irradiation of carbon nanotube structures, bundles, and composites with electron or polyatomic ion beams can substantially modify the properties of the systems without destroying their fundamental structure. Thus the simulations show how the inherently desirable properties of carbon nanotubes can be tailored through filling and/or irradiation.Refreshments will be served at 2:30p.m.**ALL FIRST-YEAR MATERIALS SCIENCE GRADUATE STUDENTS ARE REQUIRED TO ATTEND**
Location: Vivian Hall of Engineering (VHE) - 217
Audiences: Everyone Is Invited
Contact: Petra Pearce