scholarly journals Role of Polytetrahedral Structures in the Elongation and Rupture of Gold Nanowires

ACS Nano ◽  
2011 ◽  
Vol 5 (12) ◽  
pp. 10065-10073 ◽  
Author(s):  
Christopher R. Iacovella ◽  
William R. French ◽  
Brandon G. Cook ◽  
Paul R. C. Kent ◽  
Peter T. Cummings
Keyword(s):  
Gold Nanowires

scholarly journals Near-Bulk Conductivity of Gold Nanowires as Nanoscale Interconnects and the Role of Atomically Smooth Interface

2010 ◽  
Vol 22 (21) ◽  
pp. 2338-2342 ◽  
Author(s):  
Kevin Critchley ◽  
Bishnu P. Khanal ◽  
Marcin Ł. Górzny ◽  
Leonid Vigderman ◽  
Stephen D. Evans ◽  
...  
Keyword(s):  
Gold Nanowires ◽  
Bulk Conductivity ◽  
Smooth Interface

The Role of Carbon Contamination in Suspended Gold Nanowires

2002 ◽  
Vol 738 ◽  
Author(s):  
Sergio B. Legoas ◽  
Douglas S. Galvão ◽  
Varlei Rodrigues ◽  
Daniel Ugarte
Keyword(s):  
Electron Microscopy ◽  
Experimental Data ◽  
Density Functional ◽  
Gold Nanowires ◽  
Interatomic Distances ◽  
Carbon Contamination ◽  
Linear Chains ◽  
Transmission Electron ◽  
New Phenomena

ABSTRACTMetallic nanowires represent very interesting systems due to new phenomena such as quantum conductance and unexpected long interatomic distances attaining 0.3–0.5 nm. These large distances represent a challenge for physical interpretation. In this work we present experimental data from transmission electron microscopy and results from ab initio density functional calculations for suspended gold chains. We show that large distances as 0.5 nm can be easily explained by the presence of carbon atoms as contaminants, while distances ranging from 0.29 up to 0.36 nm might be explained as resulting of a mixture of clean stressed and contaminated linear chains.

scholarly journals Carrier Dynamics in Ultrathin Gold Nanowires: Role of Auger Processes

Plasmonics ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 1151-1158 ◽  
Author(s):  
Gyan Prakash ◽  
Subhajit Kundu ◽  
Ahin Roy ◽  
Abhishek K. Singh ◽  
N. Ravishankar ◽  
...  
Keyword(s):  
Carrier Dynamics ◽  
Gold Nanowires

scholarly journals The role of OH− in the formation of highly selective gold nanowires at extreme pH: multi-fold enhancement in the rate of the catalytic reduction reaction by gold nanowires

2017 ◽  
Vol 19 (7) ◽  
pp. 5077-5090 ◽  
Author(s):  
Riham El Kurdi ◽  
Digambara Patra
Keyword(s):  
Gold Nanoparticles ◽  
Growth Mechanism ◽  
Catalytic Reduction ◽  
Reduction Reaction ◽  
Gold Nanowires ◽  
Au Nps

Illustration (not to scale) of the growth mechanism of gold nanoparticles (Au NPs) at pH 4 to 11 (left) and gold nanowires (Au NWs) at pH 13 (right), by reducing Au3+ to Au0 using curcumin in CTAB media in the presence of Ag+.

scholarly journals Multivalent bonds in self-assembled bundles of ultrathin gold nanowires

2016 ◽  
Vol 18 (39) ◽  
pp. 27165-27169 ◽  
Author(s):  
B. Reiser ◽  
D. Gerstner ◽  
L. Gonzalez-Garcia ◽  
J. H. M. Maurer ◽  
I. Kanelidis ◽  
...  
Keyword(s):  
Solvent Effects ◽  
Self Assembly ◽  
The Self ◽  
Gold Nanowires ◽  
Solvent Interactions ◽  
Self Assembled

We describe solvent effects in the self-assembly of ultrathin gold nanowires and highlight the role of intermolecular ligand–solvent interactions.

The Role of Carbon Contamination in Suspended Gold Nanowires

2002 ◽  
Vol 761 ◽  
Author(s):  
Sergio B. Legoas ◽  
Douglas S. Galvão ◽  
Varlei Rodrigues ◽  
Daniel Ugarte
Keyword(s):  
Electron Microscopy ◽  
Experimental Data ◽  
Density Functional ◽  
Gold Nanowires ◽  
Interatomic Distances ◽  
Carbon Contamination ◽  
Linear Chains ◽  
Transmission Electron ◽  
New Phenomena

ABSTRACTMetallic nanowires represent very interesting systems due to new phenomena such as quantum conductance and unexpected long interatomic distances attaining 0.3–0.5 nm. These large distances represent a challenge for physical interpretation. In this work we present experimental data from transmission electron microscopy and results from ab initio density functional calculations for suspended gold chains. We show that large distances as 0.5 nm can be easily explained by the presence of carbon atoms as contaminants, while distances ranging from 0.29 up to 0.36 nm might be explained as resulting of a mixture of clean stressed and contaminated linear chains.

The Role of Simulations in Nanoscience, a Case Study: Gold Nanowires

2007 ◽  
Vol 121-123 ◽  
pp. 1007-1010
Author(s):  
Edison Z. da Silva
Keyword(s):  
Density Functional ◽  
Dynamics Simulation ◽  
Gold Nanowires ◽  
Functional Theory ◽  
Mechanisms Of Formation ◽  
Effect Of Impurities ◽  
Au Nanowires ◽  
Electronic And Structural Properties

Suspended gold nanowires can be made atomically thin with as many as five atoms, showing extremely large Au-Au bond distances. Using tools derived from Density Functional Theory (DFT) we study many questions posed by the experiments. First we use realistic molecular dynamics simulation to study the mechanisms of formation, evolution and breaking of these atomically thin Au nanowires under stress. We show how defects induce the formation one-atom chains that can grow as long as five-atoms before breaking. Results are in excellent agreement with experiments, except for the resulting shorter bond distances. In order to address this question, we use ab initio electronic structure calculations to show that the exceedingly large Au-Au interatomic distances experimentally obtained could be the effect of impurities. We studied the effect of single impurities H, B, C, N, O, S and small molecules as H2 on the nanowire's electronic and structural properties, in particular how they affect the maximum Au-Au bond length.

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