Nanoscale science and technology: Building a big future from small things

The following article is an edited transcript based on the MRS Medalist presentation given by Charles M. Lieber of Havard University on December 4, 2002 at the Materials Research Society Fall Meeting in Boston. Lieber received the Medal ''for controlled synthesis of nanowire and nanotube materials. ''This presentation begins with an introduction to the bottom-up paradigm of nanoscience and nanotechnology. The key concepts of this paradigm are explored through studies outlining progress toward meeting the challenge of nanocomputing through the assembly of functional nanowire elements. The richness of the bottom-up paradigm and nanowire building blocks is then illustrated with the development of chemical and biological nanosensors. Finally, the uniqueness of nanowires is exemplified through discussion of the assembly of nanoscale light-emitted diodes, nanowire injection lasers, and assembled arrays of these nanophotonic sources. Challenges and goals for realizing nanotechnologies in the future are discussed in the conclusion.