Bourns Hall

Colloquium

 

Meyya Meyyappan LDirector, Center for Nanotechnology NASA Ames Research Center Moffett Field, CA 94035 Ph: 650 604 2616 email: meyya@orbit.arc.nasa.gov http://www.ipt.arc.nasa.gov Novel One Dimensional Nanostructures Abstract Carbon nanotubes (CNTs) are elongated fullerenes with diameter as small as 0.7nm and several microns long. They exhibit a combination of remarkable mechanical properties and unique electronic properties and thus offer significant potential for revolutionary applications in electronics devices, computing and data storage technology, sensors, composites, storage of hydrogen or lithium for battery development, nanoelectromechanical systems (NEMS), and as tip in scanning probe microscopy (SPM) for imaging and nanolithography. Thus the CNT synthesis, characterization and applications touch upon all disciplines of science and engineering and this talk will provide an overview of the CNT field. It is possible now to grow vertically oriented, well-aligned nanowires of semiconducting materials such as silicon, GaAS, GaN and high temperature oxides such as ZnO, InO etc. These inorganic nanowires exhibit very interesting electronic and optical properties compared to their two dimensional thin film cousins and are being investigated for device, laser and sensor applications. An overview of growth, characterization and applications of these nanowires will also be covered. Biosketch Meyya Meyyappan is Director of the Center for Nanotechnology as well as Senior Scientist at NASA Ames Research Center in Moffett Field, CA. He is a founding member of the Interagency Working Group on Nanotechnology (IWGN) established by the Office of Science and Technology Policy(OSTP). The IWGN is responsible for putting together the National Nanotechnology Initiative. Dr. Meyyappan's group, consisting of 65 scientists, has been engaged in carbon nanotube(CNT) based nanotechnology, inorganic nanowires, protein nanotubes, biosensor development, chemical sensors, molecular electronics, nanotechnology in genomics, quantum computing, computational electronics, computational optoelctronics, and computational nanotechnology. For further information on his group, see http://www.ipt.arc.nasa.gov . He is a member of IEEE, AIChE, AVS, ECS, ASME, and MRS. He is a Fellow of IEEE. He is the IEEE Distinguished Lecturer on Nanotechnology and ASME's Distinguished Lecturer on Nanotechnology. He has been awarded NASA's Outstanding Leadership Medal for his work on nanotechnology. Wednesday, December 10, 2003 Bourns A265 10:10 a.m.-11:00 p.m. (Refreshments will be served at 10:00 a.m.)