Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate.

IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Beilstein Journal of Nanotechnology Pub Date : 2024-04-22 eCollection Date: 2024-01-01 DOI:10.3762/bjnano.15.39
Elyad Damerchi, Sven Oras, Edgars Butanovs, Allar Liivlaid, Mikk Antsov, Boris Polyakov, Annamarija Trausa, Veronika Zadin, Andreas Kyritsakis, Loïc Vidal, Karine Mougin, Siim Pikker, Sergei Vlassov
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Abstract

Metallic nanowires (NWs) are sensitive to heat treatment and can split into shorter fragments within minutes at temperatures far below the melting point. This process can hinder the functioning of NW-based devices that are subject to relatively mild temperatures. Commonly, heat-induced fragmentation of NWs is attributed to the interplay between heat-enhanced diffusion and Rayleigh instability. In this work, we demonstrated that contact with the substrate plays an important role in the fragmentation process and can strongly affect the outcome of the heat treatment. We deposited silver NWs onto specially patterned silicon wafers so that some NWs were partially suspended over the holes in the substrate. Then, we performed a series of heat-treatment experiments and found that adhered and suspended parts of NWs behave differently under the heat treatment. Moreover, depending on the heat-treatment process, fragmentation in either adhered or suspended parts can dominate. Experiments were supported by finite element method and molecular dynamics simulations.

沉积在图案化硅衬底上的银纳米线受热引起的形态变化。
金属纳米线(NWs)对热处理非常敏感,在远低于熔点的温度下,可在几分钟内分裂成较短的碎片。这一过程会妨碍温度相对较低的基于纳米线的设备的运行。通常,NWs 的热诱导碎裂归因于热增强扩散和瑞利不稳定性之间的相互作用。在这项工作中,我们证明了与基底的接触在碎裂过程中起着重要作用,并能强烈影响热处理的结果。我们将银纳米线沉积在特殊图案的硅晶片上,使一些纳米线部分悬浮在基底的孔上。然后,我们进行了一系列热处理实验,发现在热处理过程中,NWs 的粘附部分和悬浮部分表现不同。此外,根据热处理工艺的不同,粘附部分或悬浮部分的碎裂可能占主导地位。实验得到了有限元法和分子动力学模拟的支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Beilstein Journal of Nanotechnology
Beilstein Journal of Nanotechnology NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
5.70
自引率
3.20%
发文量
109
审稿时长
2 months
期刊介绍: The Beilstein Journal of Nanotechnology is an international, peer-reviewed, Open Access journal. It provides a unique platform for rapid publication without any charges (free for author and reader) – Platinum Open Access. The content is freely accessible 365 days a year to any user worldwide. Articles are available online immediately upon publication and are publicly archived in all major repositories. In addition, it provides a platform for publishing thematic issues (theme-based collections of articles) on topical issues in nanoscience and nanotechnology. The journal is published and completely funded by the Beilstein-Institut, a non-profit foundation located in Frankfurt am Main, Germany. The editor-in-chief is Professor Thomas Schimmel – Karlsruhe Institute of Technology. He is supported by more than 20 associate editors who are responsible for a particular subject area within the scope of the journal.
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