|
Cengiz S. Ozkan
Assistant Professor of Mechanical Engineering
Co-Faculty of Electrical Engineering
Co-Faculty of Chemical and Environmental Engineering
Director, Biomaterials and Nanotechnology Laboratory
Member, Center for Nanoscale Science and Engineering
University of California, Riverside, CA 92521
Heterostructures of Nanomaterials and
Organic-Inorganic Nanoassemblies
Abstract
Conventional nanofabrication strategies must be augmented by
new techniques including self assembly methods in order to truly take
advantage of the quantum nature of novel nanoscale devices and systems and
permit the use of these properties for “real” applications in a larger
system (> 10 nm and < 1 m). In this talk, I will describe a novel technique
for the fabrication of nano-assemblies of quantum dots (QD) and carbon
nanotubes (CNT) and -formation of CNT-QD conjugates-. CNT’s are primarily
functionalized with carboxylic end groups by oxidation in concentrated
sulfuric acid. Thiol stabilized QD’s in aqueous solution with amino end
groups were conjugated to carbon nanotubes using the ethylene carbodiimide
coupling reaction. Next, I will discuss the possibilities of using carbon
nanotubes for encapsulation and mass transport and present our experimental
observations in this area. Fourier transform infrared spectroscopy data for
the chemical modification of carbon nanotubes and scanning and high
resolution transmission electron microscopy images of the nanobuilding
blocks and the nanotube filling process will be presented. Potential
applications of our studies include the fabrication of novel electronic and
biophotonic devices, crystal displays and biosensors.
Biosketch
Ph.D. 1997, Stanford University. Appointments: Assistant
Professor of Mechanical Engineering, University of California, Riverside,
2001-current; Research Fellow, Max Planck Institute, Germany, Summer 2002;
Consulting Professor of Mechanical Engineering, Stanford University,
2000-2002; Senior Device Engineer, Applied Micro Circuits Corporation, San
Diego, 1997-2001. Dr. Ozkan’s research involves self assembly of
nanomaterials, nanoelectronics and biosensing systems. He organized several
symposia for the Materials Research Society and the American Society of
Mechanical Engineers. He holds several patents and patent disclosures in the
areas of nanoelectronics, self assembly and biosensing technologies.
Wednesday, November 19, 2003
Bourns Hall, Room A265
10:10 a.m.-11:00 p.m.
(Refreshments will be served at 10:00 a.m.) |
|
