Development of Nanostructured Microelectrode Arrays for an Implantable Retinal Prosthesis

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