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

Interface Effects on the Raman Spectra of Si/3C-SiC Superlattices

2000 ◽  
Vol 640 ◽  
Author(s):  
E. F. Bezerra ◽  
A. G. Souza Filho ◽  
J. Mendes Filho ◽  
V. Lemos ◽  
V. N. Freire ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Theoretical Calculations ◽  
Linear Chain ◽  
Dispersion Relations ◽  
Chain Model ◽  
Virtual Crystal Approximation ◽  
Smooth Interface ◽  
Bond Polarizability ◽  
Interface Effects

ABSTRACTTheoretical calculations are performed on the role of smooth interfaces in the Raman spectra of Si/3C-SiC superlattices. The dispersion relations were obtained using a linear chain model with the alloyed interface δ-(3C-SiC)0.5(Si)0.5 described in the virtual crystal approximation. A modified bond-polarizability model was used to calculate the Raman spectra. The main results are the enhancement of the Raman spectra and the appearance of new peaks in between those related to the Si quasi confined and the 3C-SiC-confined modes with increasing number δ?of interfacial monolayers (3C-SiC)0.5(Si)0.5. Some of the smooth interface related Raman peaks have intensity comparable with those of an abrupt Si/3C-SiC superlattice.

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

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 Influence of Quenching and Subsequent Annealing on the Conductivity and Electromechanical Properties of Na1/2Bi1/2TiO3-BaTiO3

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2149
Author(s):  
Lalitha Kodumudi Venkataraman
Keyword(s):  
Quality Factor ◽  
Piezoelectric Properties ◽  
Temperature Limit ◽  
Defect Chemistry ◽  
Mechanical Quality Factor ◽  
Subsequent Annealing ◽  
Minor Role ◽  
Bulk Conductivity ◽  
Mechanical Quality

Na1/2Bi1/2TiO3-based materials have gained considerable attention for their potential to exhibit giant strain, very-high ionic conductivity comparable to yttria stabilized zirconia or high mechanical quality factor for use in high power ultrasonics. In recent times, quenching Na1/2Bi1/2TiO3-based compositions have been demonstrated to enhance the thermal depolarization temperature, thus increasing the operational temperature limit of these materials in application. This work investigates the role of quenching-induced changes in the defect chemistry on the dielectric, ferroelectric and piezoelectric properties of quenched Na1/2Bi1/2TiO3-BaTiO3. The quenched samples indeed demonstrate an increase in the bulk conductivity. Nevertheless, while subsequent annealing of the quenched samples in air/oxygen atmosphere reverts back the depolarization behaviour to that of a furnace cooled specimen, the bulk conductivity remains majorly unaltered. This implies a weak correlation between the defect chemistry and enhanced thermal stability of the piezoelectric properties and hints towards other mechanisms at play. The minor role of oxygen vacancies is further reinforced by the negligible (10–15%) changes in the mechanical quality factor and hysteresis loss.

Role of interlaminar interface on bulk conductivity and electrical anisotropy of CFRP laminates measured by eddy current method

2014 ◽  
Vol 68 ◽  
pp. 1-12 ◽  
Author(s):  
Jun Cheng ◽  
Hongli Ji ◽  
Jinhao Qiu ◽  
Toshiyuki Takagi ◽  
Tetsuya Uchimoto ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Method ◽  
Electrical Anisotropy ◽  
Bulk Conductivity ◽  
Eddy Current Method ◽  
Cfrp Laminates

scholarly journals Controlling Bulk Conductivity in Topological Insulators: Key Role of Anti-Site Defects

2012 ◽  
Vol 24 (16) ◽  
pp. 2154-2158 ◽  
Author(s):  
D. O. Scanlon ◽  
P. D. C. King ◽  
R. P. Singh ◽  
A. de la Torre ◽  
S. McKeown Walker ◽  
...  
Keyword(s):  
Topological Insulators ◽  
Bulk Conductivity
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