Mechanical Properties of Gold Nanocontacts Studied by Monte Carlo Simulation

Tanimori, Souichirou; Shimamura, S.

doi:10.1143/jpsj.71.797

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…Although Young's modulus of nanowires with diameters less than 100 nm shows a dependency on the diameter due to the nonlinear behavior of surface atoms, 26,27) the Al wire in this work was sufficiently thick compared with such nanowires. Therefore, it is reasonable that the value of Young's modulus of these Al wires is close to that of bulk Al.…”

Section: Resultsmentioning

confidence: 75%

Mechanical Properties of Thin Al Wires Prepared by Electromigration

2012

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Thin Al wires with diameters of 1 to 2 m were fabricated by electromigration by applying a current in high density to a polycrystalline Al line containing a gap and a small hole in the oxide layer used to coat the line. The fabricated Al wires were subjected to small-span bending tests under observation with a microscope, and Young's modulus and yield stress of the wire were successfully determined. The value of Young's modulus of the thin Al wire was close to that of bulk Al. On the other hand, the yield stress of the Al wire was 20 times larger than that of bulk Al. The results of structural and elemental analyses of the wire showed that pure, single-crystalline Al was obtained by electromigration. Recrystallization during wire growth might be the mechanism through which this unique crystalline structure was obtained.

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Section: Resultsmentioning

confidence: 75%

Mechanical Properties of Thin Al Wires Prepared by Electromigration

2012

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“…Another essential function of MC simulation is when the Morse potential [292] with the function of temperature variation, number of atoms involves and the type of force exerts on the nanowires are included in the interatomic interaction analysis. The Morse potential parameters [293] governed the reproducibility of experimental lattice constant, bulk modulus and the cohesive energy of bulk metal nanowires. For example, force relaxation occurs at each of yielding step takes place at smaller strains at 600 K, and the elongation is at 300 K describes the breakage of Au nanowires [294].…”

Section: Simulationmentioning

confidence: 99%

Synthesis and modelling of the mechanical properties of Ag, Au and Cu nanowires

Lah

Trigueros

2019

Science and Technology of Advanced Materials

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The recent interest to nanotechnology aims not only at device miniaturisation, but also at understanding the effects of quantised structure in materials of reduced dimensions, which exhibit different properties from their bulk counterparts. In particular, quantised metal nanowires made of silver, gold or copper have attracted much attention owing to their unique intrinsic and extrinsic length-dependent mechanical properties. Here we review the current state of art and developments in these nanowires from synthesis to mechanical properties, which make them leading contenders for next-generation nanoelectromechanical systems. We also present theories of interatomic interaction in metallic nanowires, as well as challenges in their synthesis and simulation.

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“…Generally, Young's modulus is not very sensitive to the crystalline structure except in the case of nanowires with diameters of less than 100 nm. 5,25) On the other hand, because yielding of the material is very much related to dislocations, the yield stress of the material greatly depends on its crystalline structure.…”

mentioning

confidence: 99%

Local Modification of Cu Microwires by Joule Heating

Tohmyoh¹,

Ishihara²

2013

Appl. Phys. Express

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A technique for modifying the crystalline structure of a metallic microwire is introduced. The technique involves passing current through the wire via two electrical probes causing local Joule heating. We used this technique to heat a 25-µm-diameter Cu wire for 1 h at 573 K. The yield stress of the wire after modification was evaluated by a mechanical bending test and it was confirmed that the wire had softened after the process. We also performed heat treatment of a wire in a furnace and the properties of the wires modified by the two different methods were compared.

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Mechanical Properties of Gold Nanocontacts Studied by Monte Carlo Simulation

Cited by 6 publications

References 18 publications

Mechanical Properties of Thin Al Wires Prepared by Electromigration

Mechanical Properties of Thin Al Wires Prepared by Electromigration

Synthesis and modelling of the mechanical properties of Ag, Au and Cu nanowires

Local Modification of Cu Microwires by Joule Heating

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