Speaker: Abram L. Falk, Ph.D.
Nanoscale Science & Technology
IBM T.J. Watson Research Center
TITLE: Carbon nanotubes at the wafer scale
ABSTRACT: I will discuss efforts at IBM Research to develop high-performance electronic and optical devices with carbon nanotubes. Nanotubes have the potential to significantly outperform silicon, enabling an exciting array of 21st-century information technologies. To meet this challenge, we have purified semiconducting nanotubes to the 99.999% level, patterned them into narrow-pitch arrays, and demonstrated that they can support high-speed CMOS logic. Another one our new results is that carbon nanotubes support coherent plasmon resonances. These plasmons, which comprise charge oscillations in the nanotubes coupled to electromagnetic fields, can enhance light-matter interaction strengths by up to a factor of 107. They are a platform for electrically tunable optical elements, surface-enhanced absorption spectroscopy, and high-speed receivers at infrared and terahertz frequencies. In the long term, carbon nanotubes could be a foundation for unifying electrical and optical logic at the nanometer scale.