Elastic modulus of β-Ga2O3 nanowires measured by resonance and three-point bending techniques.

IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Beilstein Journal of Nanotechnology Pub Date : 2024-06-18 eCollection Date: 2024-01-01 DOI:10.3762/bjnano.15.58
Annamarija Trausa, Sven Oras, Sergei Vlassov, Mikk Antsov, Tauno Tiirats, Andreas Kyritsakis, Boris Polyakov, Edgars Butanovs
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Abstract

Due to the recent interest in ultrawide bandgap β-Ga2O3 thin films and nanostructures for various electronics and UV device applications, it is important to understand the mechanical properties of Ga2O3 nanowires (NWs). In this work, we investigated the elastic modulus of individual β-Ga2O3 NWs using two distinct techniques - in-situ scanning electron microscopy resonance and three-point bending in atomic force microscopy. The structural and morphological properties of the synthesised NWs were investigated using X-ray diffraction, transmission and scanning electron microscopies. The resonance tests yielded the mean elastic modulus of 34.5 GPa, while 75.8 GPa mean value was obtained via three-point bending. The measured elastic moduli values indicate the need for finely controllable β-Ga2O3 NW synthesis methods and detailed post-examination of their mechanical properties before considering their application in future nanoscale devices.

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通过共振和三点弯曲技术测量的β-Ga2O3 纳米线的弹性模量。
由于近年来人们对超宽带隙 β-Ga2O3 薄膜和纳米结构在各种电子和紫外器件中的应用产生了浓厚的兴趣,因此了解 Ga2O3 纳米线 (NW) 的机械特性非常重要。在这项工作中,我们使用两种不同的技术--原位扫描电子显微镜共振和原子力显微镜三点弯曲--研究了单个 β-Ga2O3 纳米线的弹性模量。利用 X 射线衍射、透射电子显微镜和扫描电子显微镜研究了合成 NW 的结构和形态特性。共振测试得到的平均弹性模量为 34.5 GPa,而通过三点弯曲得到的平均值为 75.8 GPa。测得的弹性模量值表明,在考虑将β-Ga2O3 NW应用于未来的纳米级器件之前,需要采用精细可控的β-Ga2O3 NW合成方法,并对其机械性能进行详细的后期检查。
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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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