Single-electron force readout of nanoparticle electrometers attached to carbon nanotubes.
basic_science · Level V
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- Record sourced from PubMed, PMID 18578552.
- Also identified by DOI 10.1021/nl801295y.
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Abstract
We introduce a new technique of probing the local potential inside a nanostructure employing Au nanoparticles as electrometers and using single-electron force microscopy to sense the charge states of the Au electrometers, which are sensitive to local potential variations. The Au nanoelectrometers are weakly coupled to a carbon nanotube through high-impedance molecular junctions. We demonstrate the operation of the Au nanoelectrometer, determine the impedance of the molecular junctions, and measure the local potential profile in a looped nanotube.