Abstract : Carbon nanotubes have been developed as probes for molecular resolution atomic force microscopy imaging. Reproducible methods for the preparation of carbon nanotube probe tips by chemical vapor deposition were demonstrated, and moreover, approaches for the preparation of controlled diameter carbon nanotubes were defined. The utility of nanotubes probes was demonstrated with development of new method of nanofabrication, and with development of novel method for DNA sequence analysis. In addition, semiconductor nanowires have been developed as building blocks for nanophotonics. A new concept for a nanoscale photonic source using crossed nanowires was demonstrated, and the novel photonic properties of modulated nanowire heterostructures were shown for the first time.
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