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다차원 탄소재료 연구단
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Mechanically Assisted Self-Healing of Ultrathin Gold Nanowires

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Title
Mechanically Assisted Self-Healing of Ultrathin Gold Nanowires
Author(s)
Binjun Wang; Ying Han; Shang Xu; Lu Qiu; Feng Ding; Jun Lou; Yang Lu
Publication Date
2018-05
Journal
SMALL, v.14, no.20, pp.1704085 -
Publisher
WILEY-V C H VERLAG GMBH
Abstract
As the critical feature sizes of integrated circuits approaching sub-10 nm, ultrathin gold nanowires (diameter < 10 nm) have emerged as one of the most promising candidates for next-generation interconnects in nanoelectronics. Also due to their ultrasmall dimensions, however, the structures and morphologies of ultrathin gold nanowires are more prone to be damaged during practical services, for example, Rayleigh instability can significantly alter their morphologies upon Joule heating, hindering their applications as interconnects. Here, it is shown that upon mechanical perturbations, predamaged, nonuniform ultrathin gold nanowires can quickly recover into uniform diameters and restore their smooth surfaces, via a simple mechanically assisted self-healing process. By examining the local self-healing process through in situ high-resolution transmission electron microscopy, the underlying mechanism is believed to be associated with surface atomic diffusion as evidenced by molecular dynamics simulations. In addition, mechanical manipulation can assist the atoms to overcome the diffusion barriers, as suggested by ab initio calculations, to activate more surface adatoms to diffuse and consequently speed up the self-healing process. This result can provide a facile method to repair ultrathin metallic nanowires directly in functional devices, and quickly restore their microstructures and morphologies by simple global mechanical perturbations © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
https://pr.ibs.re.kr/handle/8788114/4529
ISSN
1613-6810
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Files in This Item:
5. Wang_et_al-2018-Small.pdfDownload

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