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2005 Nuggets

Carbon Nanotubes Grown in Nanoporous Alumina for Vertical Transistors
(P. M. Campbell, Naval Research Laboratory, Visitor to CNS)

Carbon nanotubes are capable of conducting extraordinarily large current densities (~109 amp/cm2). Furthermore, the current in semiconducting carbon nanotubes can be modulated by the field effect. The Naval Research Laboratory has initiated an exploratory research program to investigate the possible use of massively parallel arrays of vertical carbon nanotubes grown in a nanoporous alumina matrix to form a new class of high-frequency high-current field-effect transistor. The formation of the nanoporous alumina arrays and the integration of these pores with a suitable carbon nanotube growth catalyst were developed during a week-long visit by Dr. P. M. Campbell of NRL with Dr. Mingliang Tian of the Pennsylvania State University Physics Department and other members of the Center for Nanoscale Science MRSEC Team.