Tailoring structure and electrical properties of carbon nanotubes using kilo-electron-volt ions

Wei, Bingqing; D’Arcy-Gall, J.; Ajayan, Pulickel M.; Ramanath, Ganapathiraman

doi:10.1063/1.1622781

Cited by 106 publications

(53 citation statements)

References 22 publications

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“…Irradiation of arc-evaporated MWNTs with 30 and 50 keV Ga ions resulted in very interesting structural transformations in the nanotubes. 22 For 50 keV ions with doses of ϳ10 13 ions/ cm 2 , the outer shells of the MWNTs remained intact, while the inner layers reorganized into highly ordered pillboxlike nanocompartments with diameters of about 5 nm and of varying lengths between 2 and 20 nm, see Fig. 44 34 as well.…”

Section: Experiments On Heavy Ion Irradiation Of Carbon Nanotubesmentioning

confidence: 98%

“…[6][7][8][9][10][11][12][13][14][15][16] Besides, it was demonstrated that nanotubes can be interconnected or merged 9,12,17,18 and that irradiation can give rise to many interesting phenomena, such as extreme pressure inside nanotubes 19 or fullerenelike "onions," 6,20 so that these systems can be used as nanolaboratories for studying pressure-induced transformations at the nanoscale. Furthermore, recent experiments indicate that ion, [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] electron, 6,39-52 and high energy photon [53][54][55][56] irradiation can be used to tailor the mechanical, 8,10 electronic, 11,[21][22][23] and even magnetic …”

Section: Introductionmentioning

confidence: 99%

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Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

946

591

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A common misconception is that the irradiation of solids with energetic electrons and ions has exclusively detrimental effects on the properties of target materials. In addition to the well-known cases of doping of bulk semiconductors and ion beam nitriding of steels, recent experiments show that irradiation can also have beneficial effects on nanostructured systems. Electron or ion beams may serve as tools to synthesize nanoclusters and nanowires, change their morphology in a controllable manner, and tailor their mechanical, electronic, and even magnetic properties. Harnessing irradiation as a tool for modifying material properties at the nanoscale requires having the full microscopic picture of defect production and annealing in nanotargets. In this article, we review recent progress in the understanding of effects of irradiation on various zero-dimensional and one-dimensional nanoscale systems, such as semiconductor and metal nanoclusters and nanowires, nanotubes, and fullerenes. We also consider the two-dimensional nanosystem graphene due to its similarity with carbon nanotubes. We dwell on both theoretical and experimental results and discuss at length not only the physics behind irradiation effects in nanostructures but also the technical applicability of irradiation for the engineering of nanosystems.

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Section: Experiments On Heavy Ion Irradiation Of Carbon Nanotubesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

946

591

View full text Add to dashboard Cite

show abstract

“…Band gap tailoring and carbon nanotube interconnects have been achieved using charged particle beams as well. [4][5][6][7] Furthermore, it appears that it is possible to modify their physical properties by changing their structure locally only along a short section of the tube. 8 Most of the works devoted to study the effects of electron or ion-beam irradiation have involved single-walled and multiwalled carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

Resonance Raman spectroscopy in Si and C ion-implanted double-wall carbon nanotubes

et al. 2009

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The effect of 170 keV Si and 100 keV C ion bombardment on the structure and properties of highly pure, double-wall carbon nanotubes has been investigated using resonance Raman spectroscopy. The implantations were performed at room temperature with ion doses ranging between 1 ϫ 10 13 ions/ cm 2 and 1 ϫ 10 15 ions/ cm 2 . As expected, the Si irradiation created more disorder than the C irradiation for the same ion fluence. For both species, as the ion-implantation fluence increased, the D-band intensity increased, while the G-band intensity decreased, indicating increased lattice disorder, in analogous form to other forms of graphite and other nanotube types. The frequency of the G band decreased with increasing dose, reflecting a softening of the phonon mode due to lattice defects. With increasing ion fluence, the radial breathing modes ͑RBMs͒ of the outer tubes ͑either semiconducting or metallic͒ disappeared before the respective RBM bands from the inner tubes, suggesting that the outer nanotubes are more affected than the inner nanotubes by the ion irradiation. After Si ion bombardment to a dose of 1 ϫ 10 15 ions/ cm 2 , the Raman spectrum resembled that of highly disordered graphite, indicating that the lattice structures of the inner and outer nanotubes were almost completely destroyed. However, laser annealing partially restored the crystalline structure of the nanotubes, as evidenced by the re-emergence of the G and RBM bands and the significant attenuation of the D band in the Raman spectrum.

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“…Ion or electron beam irradiation may also be a possible way [30]. For example, after Ga + ion irradiation, the housing tube becomes positively charged [31].…”

Section: Nano Researchmentioning

confidence: 99%

Simulation studies of a “nanogun” based on carbon nanotubes

2008

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Quantum mechanical molecular dynamics simulations show that electrically neutral carbon nanotubes or fullerene balls housed in an outer carbon nanotube can be driven into motion by charging the outer tube uniformly. Positively and negatively charged outer tube are found to have quite different actions on the initially neutral nanotubes or fullerene balls. A positively charged tube can drive out the molecule inside it out at speeds over 1 km/s, just like a "nanogun", while a negatively charged tube can drive the molecule into oscillation inside it and can absorb inwards a neutral molecule in the vicinity of its open end, like a "nanomanipulator". The results demonstrate that changing the charge environment in specifi c ways may open the door to conceptually new nano/molecular electromechanical devices.

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Tailoring structure and electrical properties of carbon nanotubes using kilo-electron-volt ions

Cited by 106 publications

References 22 publications

Ion and electron irradiation-induced effects in nanostructured materials

Ion and electron irradiation-induced effects in nanostructured materials

Resonance Raman spectroscopy in Si and C ion-implanted double-wall carbon nanotubes

Simulation studies of a “nanogun” based on carbon nanotubes

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