Ion beam shaping and downsizing of nanostructures

Zgirski, M.; Riikonen, Kari-Pekka; Tuboltsev, Vladimir; Jalkanen, Pasi; Hongisto, T. T.; Arutyunov, K. Yu.

doi:10.1088/0957-4484/19/05/055301

Cited by 31 publications

(33 citation statements)

References 10 publications

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“…1). In this work the method [21], [25] was applied to lithographically fabricated 99.999 % pure Al nanowires with initial cross-section of about 100 nm x 100 nm. During measurements the structures were immersed into a directly pumped 4 He bath with base temperature of about 0.95 K. Contrary to Refs.…”

Section: Methodsmentioning

confidence: 99%

Quantum fluctuations in ultranarrow superconducting aluminum nanowires

et al. 2008

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Progressive reduction of the effective diameter of a nanowire is applied to trace evolution of the shape of superconducting transition R(T ) in quasi-one-dimensional aluminum structures. In nanowires with effective diameter ≤ 15 nm the R(T ) dependences are much wider than predicted by the model of thermally activated phase slips. The effect can be explained by quantum fluctuations of the order parameter.

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Section: Methodsmentioning

confidence: 99%

Quantum fluctuations in ultranarrow superconducting aluminum nanowires

et al. 2008

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“…Fabrication of metal NWs as narrow as 10 nm has been demonstrated to be possible using this approach. [561][562][563] These NWs are narrow enough that quantum fluctuations of the superconducting transition can directly be observed in them. 564 Moreover, the nature of the irradiating ion was shown to be significant in the thinning process.…”

Section: Ion Beam Synthesis Of Nwsmentioning

confidence: 99%

Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

936

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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“…HighOhmic resistors (up to 10 M) or/and chains of Josephson junctions were used as on-chip high impedance elements (marked 'Z' in Fig.1) enabling current bias mode. Low energy directional ion milling was used to reduce the critical dimensions of the lift-off fabricated nanostructures down to sub-20 nm scales [17]. The capacitively coupled central Tshaped electrode was used as an electrostatic gate.…”

Section: Introductionmentioning

confidence: 99%