Sun Y, Sun B, He J, Yang G, Wang C. Millimeters long super flexible Mn
5Si
3@SiO
2 electrical nanocables applicable in harsh environments.
Nat Commun 2020;
11:647. [PMID:
32005830 PMCID:
PMC6994472 DOI:
10.1038/s41467-019-14244-5]
[Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 12/18/2019] [Indexed: 12/22/2022] Open
Abstract
Providing high performance electrical nano-interconnects for micro-nano electronics that are robust in harsh environments is highly demanded. Today, electrical nano-interconnects based on metallic nanowires, e.g. Ag and Cu, are limited by their positive physicochemical reactivity and ductility under large strain (i.e. irreversible dislocations and local necking-down elongation) at high temperatures or in strong oxidizing and acidic environments. Herein, to overcome these limitations, high-quality millimetre-sized soft manganese-based silicide (Mn5Si3@SiO2) nanowire nanocables are designed via a glassy Si–Mn–O matrix assisted growth. The proposed nanocables exhibit good electrical performance (resistivity of 1.28 to 3.84×10-6 Ωm and maximum current density 1.22 to 3.54×107 A cm−2) at temperatures higher than 317°C in air atmosphere, strongly acidic (HCl, PH=1.0) and oxidizing (H2O2, 10%) ambient, and under complex electric field. The proposed Mn5Si3@SiO2 nanocables, which withstand a strain of 16.7% free of failure, could be exploited for diverse applications in flexible electronics and complex wiring configurations.
Though high performance electrical interconnects are required for micro/nano electronics, existing metallic nanowires lack structural and electrical stability. Here, the authors report soft manganese-based silicide nanowires with high electrical and structural performance in harsh environments.
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