Japanese Journal of Applied Physics · 2005 · 15 citations · 10 references
Natural SciencesMaterials EngineeringMaterials ScienceNanotechnologySpectroscopySurface ScienceCarbon NanomaterialsCarbon NanotubesNanoelectronicsNanotubesScanning Probe MicroscopySurface PhysicsAtomic-resolution ImagingAtomic-scale Surface ImagingCharge Transport MeasurementsElectronic TransportFlexibilityNanometer-scale ImagingScanning Tunneling SpectroscopyTip - Sample Interactions
By exploiting the metal coating of carbon nanotube (CNT) tips for a scanning tunneling microscope (STM), we demonstrated atomic imaging/spectroscopy and showed their potential for electrical nanoprobes. A CNT glued to a W tip was uniformly coated with a thin W layer 3–6 nm thick. Using this tip, stable atomic imaging and spectroscopy were carried out on clean Si(111)-7×7 and Si(100)-2×1 surfaces. The mechanical flexibility of the coated CNT was maintained by virtue of the thin-layer coating, enabling repeated direct contact to the sample surface. Two W-coated CNT tips were brought together within a distance of approximately 50 nm. These results indicate that the tips are useful for electronic transport measurements on a nanometer scale after installation into a multiprobe STM.
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Direct Observation of Localized Defect States in Semiconductor Nanotube Junctions
Ha Jin Kim, Jhinhwan Lee, Se‐Jong Kahng et al. · Physical Review Letters · 2003 · 115 citations