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SUNMONTUEWEDTHUFRISAT
Events for October 29, 2004
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Development of Nanostructured Microelectrode Arrays for an Implantable Retinal Prosthesis
Fri, Oct 29, 2004 @ 02:45 AM - 04:00 AM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
THE DEPARTMENT OF MATERIALS SCIENCE & ENGINEERING
PRESENTS A SEMINARbyDr. John J. WhalenBioelectronics Laboratory – Doheny Retina Institute
University of Southern CaliforniaSPEAKING ONDevelopment of Nanostructured Microelectrode Arrays for an Implantable Retinal ProsthesisABSTRACT The microelectrode array to be discussed uses a two-dimensional arrangement of microelectrode patches in contact with the surface of the retina to artificially stimulate vision via electrical depolarization of the retinal ganglion cells. Some of the materials-related issues include: 1) microelectrode and substrate biocompatibility, 2) prevention of biological fluid penetration into the device electronics, 3) microelectrode corrosion, and 4) safety issues related to tissue stimulation with electrical current. Materials science and engineering provides a solid platform for addressing these design issues. A method of fabricating microelectrode arrays based on platinum nanowires has been developed and is currently being studied for possible integration into the prosthesis.FRIDAY, OCTOBER 29, 2004
2:45P.M. - 3:30P.M.
(Refreshments will be served at 2:30p.m.)
VHE 217**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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The City of Riversides Experiences with Perchlorate Removal Treatment
Fri, Oct 29, 2004 @ 01:00 PM - 02:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Owen Lu, P.E.
Water Systems Operations Manager
Riverside Public Utilities
Riverside, CAAbstract:
Water is a resource basic to life itself – the quality of life would decline if this precious resource were limited in supply and quality. Although an occurrence is rare, the impact of contaminated water to the community is astronomical. Thus, the integrity of the infrastructure, competency of the staff, adequacy of the water supply, and wholesome of the potable water has always been the first priority of Federal and State regulators. Due to a recent movie "Erin Brockovich," the water quality gained increasing attentions from public. Consequently, countless lawsuits are filed and pending nationwide, and the industry has become regulation-driven, lawsuit-driven, and customer services-driven.Perchlorate is one of the emerging contaminants in the drinking water. As such, economically viable removal treatment technologies are limited. After a series of pilot-scale studies, environmental restriction reviews, and cost-benefit analyses, the City decided to operate a fixed-bed, toss-away, perchlorate-selective ion exchange technology. This presentation will briefly review the existing regulatory requirements, perchlorate removal treatment technologies and their restrictions, and issues with designing, constructing, and operating an ion exchange plant. A demonstration study was conducted to verify whether the resin would cause any impact to the downstream water quality.Like many other industries, the water industry is facing the challenges of demographic changes. This presentation also briefly discusses the trends of the industry, and provides a few recommendations to the young professional who may be interested in pursuing a career in this industry.Location: Seeley G. Mudd Bldg., Room 101
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
