Four-point probe resistance measurements using PtIr-coated carbon nanotube tips.
basic_science · Level V
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- Record sourced from PubMed, PMID 17385933.
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Abstract
We performed four-terminal conductivity measurements on a CoSi2 nanowire (NW) at room temperature by using PtIr-coated carbon nanotube (CNT) tips in a four-tip scanning tunneling microscope. The physical stability and high aspect ratio of the CNT tips made it possible to reduce the probe spacing down to ca. 30 nm. The probe-spacing dependence of resistance showed diffusive transport even at 30 nm and no current leakage to the Si substrate.
Medical subject headings
- Electrochemistry
- Equipment Failure Analysis
- Iridium
- Materials Testing
- Microelectrodes
- Nanotubes, Carbon
- Platinum