scholarly journals The impact of doping rates on the morphologies of silver and gold nanowires grown in helium nanodroplets

2016 ◽  
Vol 18 (3) ◽  
pp. 1451-1459 ◽  
Author(s):  
Alexander Volk ◽  
Philipp Thaler ◽  
Daniel Knez ◽  
Andreas W. Hauser ◽  
Johannes Steurer ◽  
...  
Keyword(s):  
Metal Atom ◽  
Silver Nanowires ◽  
Gold Nanowires ◽  
Helium Nanodroplets ◽  
The Impact

The morphologies of HeN-grown gold and silver nanowires depend on the metal atom doping rates in the pickup process.

scholarly journals Correction: The impact of doping rates on the morphologies of silver and gold nanowires grown in helium nanodroplets

2016 ◽  
Vol 18 (4) ◽  
pp. 3359-3359 ◽  
Author(s):  
Alexander Volk ◽  
Philipp Thaler ◽  
Daniel Knez ◽  
Andreas W. Hauser ◽  
Johannes Steurer ◽  
...  
Keyword(s):  
Chem Phys ◽  
Gold Nanowires ◽  
Helium Nanodroplets ◽  
The Impact ◽  
Phys Chem Chem Phys

Correction for ‘The impact of doping rates on the morphologies of silver and gold nanowires grown in helium nanodroplets’ by Alexander Volk et al., Phys. Chem. Chem. Phys., 2016, DOI: 10.1039/c5cp06248a.

scholarly journals Copercolating Networks: An Approach for Realizing High-Performance Transparent Conductors using Multicomponent Nanostructured Networks

Nanophotonics ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 180-195 ◽  
Author(s):  
Suprem R. Das ◽  
Sajia Sadeque ◽  
Changwook Jeong ◽  
Ruiyi Chen ◽  
Muhammad A. Alam ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Indium Tin Oxide ◽  
High Performance ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Single Component ◽  
Transparent Conductors ◽  
Hybrid Networks ◽  
Gold Nanowires ◽  
Metallic Nanowire Networks

Abstract Although transparent conductive oxides such as indium tin oxide (ITO) are widely employed as transparent conducting electrodes (TCEs) for applications such as touch screens and displays, new nanostructured TCEs are of interest for future applications, including emerging transparent and flexible electronics. A number of twodimensional networks of nanostructured elements have been reported, including metallic nanowire networks consisting of silver nanowires, metallic carbon nanotubes (m-CNTs), copper nanowires or gold nanowires, and metallic mesh structures. In these single-component systems, it has generally been difficult to achieve sheet resistances that are comparable to ITO at a given broadband optical transparency. A relatively new third category of TCEs consisting of networks of 1D-1D and 1D-2D nanocomposites (such as silver nanowires and CNTs, silver nanowires and polycrystalline graphene, silver nanowires and reduced graphene oxide) have demonstrated TCE performance comparable to, or better than, ITO. In such hybrid networks, copercolation between the two components can lead to relatively low sheet resistances at nanowire densities corresponding to high optical transmittance. This review provides an overview of reported hybrid networks, including a comparison of the performance regimes achievable with those of ITO and single-component nanostructured networks. The performance is compared to that expected from bulk thin films and analyzed in terms of the copercolation model. In addition, performance characteristics relevant for flexible and transparent applications are discussed. The new TCEs are promising, but significant work must be done to ensure earth abundance, stability, and reliability so that they can eventually replace traditional ITO-based transparent conductors.

First Principles Study of Structural and Electronic Properties of Pentagonal and Hexagonal Noble Metal Nanowires

NANO ◽  
2016 ◽  
Vol 11 (06) ◽  
pp. 1650069
Author(s):  
Zhi-Jian Fu ◽  
Li-Jun Jia ◽  
Ji-Hong Xia ◽  
Hai-Bo Ruan ◽  
Ke Tang ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Noble Metal ◽  
First Principles ◽  
Density Functional ◽  
Silver Nanowires ◽  
Metal Nanowires ◽  
Gold Nanowires ◽  
Free Standing ◽  
Electronic Band ◽  
Atom Chain

The equilibrium structure and electronic properties of four ultrathin free-standing pentagonal and hexagonal noble metal nanowires, that is, copper nanowires (CuNWs), silver nanowires (AgNWs), gold nanowires (AuNWs) and platinum nanowires (PtNWs), have been studied comprehensively by adopting a first-principles simulation based on the density-functional theory. The staggered topologies are more stable than the eclipsed ones by analyzing the bonding energy. The staggered ones with a linear atom chain in the center of the pentagonal or hexagons topologies are the preferred structures for CuNWs and AgNWs, but the staggered ones without a linear atom chain in the center of the pentagon or hexagon are the preferred structures for AuNWs and PtNWs due to the increasing core–core repulsions. The calculated electronic band structures and density of states present that all the noble metal nanowires are metallic. The projected densities of states (PDOS) of dominant d-states and the charge density show that the narrower d-state moved to the Fermi energy and metallic bonding character for all the noble metal nanowires.

scholarly journals Thermal instabilities and Rayleigh breakup of ultrathin silver nanowires grown in helium nanodroplets

2015 ◽  
Vol 17 (38) ◽  
pp. 24570-24575 ◽  
Author(s):  
Alexander Volk ◽  
Daniel Knez ◽  
Philipp Thaler ◽  
Andreas W. Hauser ◽  
Werner Grogger ◽  
...  
Keyword(s):  
Computational Model ◽  
Silver Nanowires ◽  
Helium Nanodroplets

The degradation of ultrathin silver nanowires grown in helium nanodroplets is tracked experimentally and identified as Rayleigh breakup by application of a computational model.

scholarly journals Synergetic Effects of Silver Nanowires and Graphene Oxide on Thermal Conductivity of Epoxy Composites

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1264 ◽  
Author(s):  
Li Zhang ◽  
Wenfeng Zhu ◽  
Ying Huang ◽  
Shuhua Qi
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Impact Strength ◽  
Epoxy Resin ◽  
Silver Nanowires ◽  
Phonon Transport ◽  
Epoxy Composites ◽  
Hybrid Fillers ◽  
Interfacial Contact ◽  
The Impact

One-dimensional silver nanowires (AgNWs) and two-dimensional graphene oxide (GO) were combined to construct a three-dimensional network structure. The AgNWs can effectively inhibit stacking of adjacent GO sheets by occupying regions between layers of GO. Moreover, the GO sheets embedded in the gaps of the AgNWs network increase the interfacial contact area between the AgNWs and the epoxy matrix, resulting in the formation of more efficient phonon transport channels. To prepare an epoxy-based thermal conductive composite, hybrid networks were fabricated and added to epoxy resin using a solution mixing method. Significant synergistic effects were observed between the AgNWs and GO sheets. The thermal conductivity of epoxy composites filled with 10 wt.% AgNW/GO hybrids was found to be 1.2 W/mK and the impact strength was 28.85 KJ/m2, which are higher than the corresponding values of composites containing AgNWs or GO sheets alone. Thus, the thermal conductivity and impact strength of the epoxy composites were improved. The additive effects are mainly owing to the improved interfacial contact between the hybrid fillers and the epoxy resin, resulting in a more efficient phonon transport network. The use of hybrid fillers with different structures is a simple and scalable strategy for manufacturing high-performance thermally conductive materials for electronic packaging.

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

The Geosciences Applied to Lunar Exploration

1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green
Keyword(s):  
Lunar Surface ◽  
Probable Mechanism ◽  
Point Of View ◽  
Lunar Exploration ◽  
Geological Model ◽  
Apply Geophysics ◽  
Surface Features ◽  
The Impact

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.

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