metallic nanowire networks
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2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alessandro Cultrera ◽  
Gianluca Milano ◽  
Natascia De Leo ◽  
Carlo Ricciardi ◽  
Luca Boarino ◽  
...  

AbstractThe knowledge of the spatial distribution of the electrical conductivity of metallic nanowire networks (NWN) is important for tailoring the performance in applications. This work focuses on Electrical Resistance Tomography (ERT), a technique that maps the electrical conductivity of a sample from several resistance measurements performed on its border. We show that ERT can be successfully employed for NWN characterisation if a dedicated measurement protocol is employed. When applied to other materials, ERT measurements are typically performed with a constant current excitation; we show that, because of the peculiar microscopic structure and behaviour of metallic NWN, a constant voltage excitation protocols is preferable. This protocol maximises the signal to noise ratio in the resistance measurements—and thus the accuracy of ERT maps—while preventing the onset of sample alterations.


2021 ◽  
Author(s):  
Nicolas Charvin ◽  
Joao Resende ◽  
Dorina T. Papanastasiou ◽  
David Muñoz-Rojas ◽  
Carmen Jiménez ◽  
...  

We describe the degradation mechanism in a metallic nanowire network subjected to electrical stress. The nanowire network degradation is ascribed, at a very local scale, to hot-spot formation and the subsequent propagation of a spatially correlated disruptive crack.


2020 ◽  
Vol 3 (12) ◽  
pp. 11987-11997 ◽  
Author(s):  
Gianluca Milano ◽  
Alessandro Cultrera ◽  
Katarzyna Bejtka ◽  
Natascia De Leo ◽  
Luca Callegaro ◽  
...  

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40740-40747 ◽  
Author(s):  
Jun Wang ◽  
Shuye Zhang ◽  
Zhiyuan Shi ◽  
Jinting Jiu ◽  
Chunhui Wu ◽  
...  

A simple photocopying method based on selective polymer photodegradation is proposed for fabricating topographical nanopatterns. Nanoridges are structured on a polyethylene terephthalate film due to ultraviolet shielding of silver nanowire networks.


2016 ◽  
Vol 5 (5) ◽  
pp. 1600580 ◽  
Author(s):  
Henning Galinski ◽  
Andrea Fratalocchi ◽  
Max Döbeli ◽  
Federico Capasso

Nanophotonics ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 180-195 ◽  
Author(s):  
Suprem R. Das ◽  
Sajia Sadeque ◽  
Changwook Jeong ◽  
Ruiyi Chen ◽  
Muhammad A. Alam ◽  
...  

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.


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