2003
DOI: 10.1103/physrevb.68.113406
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Cutting of multiwalled carbon nanotubes by a negative voltage tip of an atomic force microscope: A possible mechanism

Abstract: Multiwalled carbon nanotubes ͑MWNT's͒ on Si͑5 5 12͒ surfaces are demonstrated to be cut only by a negatively biased conducting tip of an atomic force microscope ͑AFM͒. By scanning with the AFM tip across a 30-nm-diam MWNT in contact mode, we could cut the MWNT only at a negative tip voltage below a threshold. As the tip-moving speed increased, the magnitude of the threshold voltage was increased. A graphite surface was etched in comparison by the same method. It was also etched only at a negative tip voltage b… Show more

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Cited by 55 publications
(31 citation statements)
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“…Therefore, to cut or sweep away the nanotubes, we applied a bias to the AFM tip. A negative bias of -10 V was shown to cut the SWNTs (not shown), consistent with recent experimental reports of cutting CNTs with a negatively biased tip (Hyon et al 2005;Kim et al 2003;Park et al 2002). Multiple scans over the area marked with a white rectangular box in Fig.…”
Section: Resultssupporting
confidence: 87%
See 1 more Smart Citation
“…Therefore, to cut or sweep away the nanotubes, we applied a bias to the AFM tip. A negative bias of -10 V was shown to cut the SWNTs (not shown), consistent with recent experimental reports of cutting CNTs with a negatively biased tip (Hyon et al 2005;Kim et al 2003;Park et al 2002). Multiple scans over the area marked with a white rectangular box in Fig.…”
Section: Resultssupporting
confidence: 87%
“…Atomic force microscopy (AFM) has been a widely used tool to perform various kinds of CNT manipulation. Both contact mode and non-contact mode could be used to translate, bend, roll, split or cut the nanotubes (Hyon et al 2005;Kim et al 2003;Kumar et al 2012;Postma et al 2000;Ziyong et al 2003), either by applying the tip bias (Hyon et al 2005;Kim et al 2003;Park et al 2002) or by exerting mechanical forces (Hertel et al 1998). Devices based on SWNTs were also fabricated through AFM manipulation such as single-electron transistors (Postma et al 2001), field-effect transistors (Avouris et al 1999), diodes (Jiao et al 2008), and so on.…”
Section: Introductionmentioning
confidence: 99%
“…The formation mechanism of nanostructures on the HOPG surface subjected to bias voltage has been widely discussed [17][18][19]. In air, the water vapour can condense into liquid phase between the tip and the substrate (Figure 4(a)).…”
Section: Resultsmentioning
confidence: 99%
“…In 2002 Park et al [17] realized oxidative cutting of CNT with diameter of 3 nm by AFM. With the same method, a thick CNT with diameter of 30 nm was cut by Kim et al [18] in 2003, and the possible mechanism of cutting was discussed. To study the cutting mechanism furthermore, we performed CNT cutting experiments on Si(100) substrate and analyzed the electrochemical reactions during the cutting.…”
Section: Oxidative Cutting Of Carbon Nanotubementioning
confidence: 99%