Student Hosted Colloquium

Thursday, November 8th
Professor Charles Lieber
"Nanowires, Nanoscience & Emerging Nanotechnologies"

4:15pm - 5:15pm
Braun Lecture Hall
S.G.Mudd Chemistry Building
Stanford University




This seminar is free and open to the public. All Stanford University Chemistry students are encouraged to attend this special event.

About the seminar:
Nanoscience offers the promise of producing revolutionary advances in many areas of technology, ranging from electronics and computing to biology and medicine, yet the realization of this promise will depend critically on addressing fundamental scientific issues, including the growth of nanoscale materials or building blocks, their device properties and scaling, and the development of integrated functional cicuits and systems. This presentation will provide an overview of key results addressing fundamental issues and hurdles along pathways to integrated nanoelectronics based on nanowires. First, the reproducible growth and transport properties of nanowires with controlled electrical properties will be discussed, with a particular emphasis on unique advantages of heterostructures for enhancing function without the need for lithography [1]. Second, flexible strategies for the fabrication of highly integrated structures on both traditional and flexible substrates will be described, including the development of three-dimensional structures [2,3]. Third, examples of state-of-the-art integrated nanowire circuits will be
Figure 1. Schematic of layer-by-layer assembly of active nanowire elements, and electrical properties for transistors fabricated in layers 1, 5 and 10. described including the development of nanowire nanoelectronic arrays for ultra-sensitive, label-free, real-time detection of diseases [4], and the design, fabrication, and properties of PMOS and CMOS integrated three-dimensional circuits. Scientific challenges that must be addressed to push these and other integrated nano-enabled systems to true commercial technologies in the future will be summarized.

[1] J. Xiang, W. Lu, Y. Hu, Y. Wu, H. Yan and C.M. Lieber, “Ge/Si nanowire heterostructures as highperformance field-effect transistors,” Nature 441, 489-493 (2006).
[2] A. Javey, S. Nam, R.S. Friedman, H. Yan and C.M. Lieber, “Layer-by-Layer Assembly of Nanowires for Three-Dimensional, Multifunctional Electronics,” Nano Lett. 7, 773-777 (2007).
[3] G. Yu, A. Cao and C.M. Lieber, “Large-area blown bubble films of aligned nanowires and carbon nanotubes,” Nature Nanotech. 2, 372-377 (2007)
[4] F. Patolsky, G. Zheng and C.M. Lieber, “Nanowire Sensors for Medicine and the Life Sciences,” Nanomedicine 1, 51-65 (2006).

About Lieber:
Charles M. Lieber was born in Philadelphia, Pennsylvania in 1959. He attended Franklin and Marshall College for his undergraduate education and graduated with honors in Chemistry. After doctoral studies at Stanford University and postdoctoral research at the California Institute of Technology, he moved to the East Coast in 1987 to assume an Assistant Professor position at Columbia University. Here Lieber embarked upon a new research program addressing the synthesis and properties of low-dimensional materials. Lieber moved to Harvard University in 1991 and now holds a joint appointment in the Department of Chemistry and Chemical Biology, as the Mark Hyman Professor of Chemistry, and the School of Engineering and Applied Sciences. At Harvard Lieber has pioneered the synthesis of a broad range of nanoscale materials, the characterization of the unique physical properties of these materials and the development of methods of hierarchical assembly of nanoscale wires, together with the demonstration of applications of these materials in nanoelectronics, nanocomputing, biological and chemical sensing, neurobiology, and nanophotonics. Lieber has also developed and applied a new chemically sensitive microscopy for probing organic and biological materials at nanometer to molecular scales. This work has been recognized by a number of awards, including the NBIC Research Excellence Award, University of Pennsylvania (2007), Nanotech Briefs Nano 50 Award (2005), ACS Award in the Chemistry of Materials (2004), World Technology Award in Materials (2004 and 2003), Scientific American Award in Nanotechnology and Molecular Electronics (2003), New York Intellectual Property Law Association Inventor of the Year (2003), APS McGroddy Prize for New Materials (2003), Harrison Howe Award (2002), MRS Medal (2002), Feynman Prize in Nanotechnology (2001), NSF Creativity Award (1996) and ACS Pure Chemistry Award (1992). Lieber is an elected member of the National Academy of Sciences and the American Academy of Arts and Sciences, Fellow of the American Physical Society, the Institute of Physics and the American Association for the Advancement of Science. Lieber is Co-Editor of Nano Letters, and also serves on the Editorial and Advisory Boards of a large number of science and technology journals. Lieber also serves on the Technical Advisory Board of Samsung Electronics. Lieber has published more than 290 papers in peer-reviewed journals and is the principal inventor on more than 30 patents. In his spare time, Lieber has been active in commercializing nanotechnology, and has founded the nanotechnology companies, Nanosys, Inc. in 2001 and the new nanosensor company Vista Therapeutics in 2007.

Questions
Please contact Patricia Dwyer at 650-723-4770.