A Three-branched Dna Template For Carbon Nanotube Self-assembly Into Nanodevice Configuration

摘要

We report here the first realization of an artificial branched DNA template where a single wall carbon nanotube is positioned with the necessary geometry of an individually gated field effect transistor.rnSingle wall carbon nanotubes (SWNTs) have emerged as an important material for nanofabrication of electronic devices and sensors. However, organizing, interconnecting and locating individual SWNTs remain important challenges toward large-scale integrated circuits. Today, major attention is given to SWNT functionalization with information-containing molecules to control SWNT self-assembly without the need for nanofabrication or mechanical manipulation. Because of its unique self-assembly capability and information content, DNA is a promising candidate molecule. Indeed, numerous studies have demonstrated that DNA can act as an error-free, programmable nanoscale template for manipulating nano-objects in a relatively simple process. Recently, such nanoscale templates have been positioned between electrodes. Moreover, the DNA itself can be transformed into conductive metallic nanowires, which can electrically contact SWNTs.