University of California, Riverside

Department of Electrical and Computer Engineering



EE research featured on cover of Physica Status Solidi A


EE research featured on cover of Physica Status Solidi A
 
Postdoctoral researcher Rajeev R. Pandey and graduate students Nicolas Bruque and Khairul Alamin, members of EE professor Roger Lake's LATTE group, have authored the cover article of the February 2006 issue of Physica Status Solidi A, "Carbon nanotube – molecular resonant tunneling diode". The article presents a novel idea to build a resonant tunnel diode (RTD) using two carbon nanotubes (CNTs) assembled together by a molecule.

Silicon transistors have been getting smaller and faster for over 40 years following the prediction of Moore’s Law. Around the year 2020 they are expected to reach their ultimate limits with gate lengths equal to the size of just 40 atoms. At this point many decades of exponential progress will end unless alternative materials and devices are invented to supplement or supplant silicon. Although CNTs show a superb electrical performance, there are huge problems to overcome. The mainstream effort has focused on transistors built with CNTs. One approach to circuit integration uses chemical and biological assembly borrowing technology from biology, biosensing, and nano electrical mechanical systems. CNT-molecular RTDs that compliment transistors allow for faster, denser circuits – bringing us one step closer to the practical realization of integrated molecular electronics.
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