Mechanical characterization of nanomaterials revealed by Microscopic Nanomechanical Measurement method.

Yoshifumi Oshima, Jiaqi Zhang, Chunmeng Liu, Jiaming Liu, Keisuke Ishizuka, Toyoko Arai, Masahiko Tomitori
{"title":"Mechanical characterization of nanomaterials revealed by Microscopic Nanomechanical Measurement method.","authors":"Yoshifumi Oshima, Jiaqi Zhang, Chunmeng Liu, Jiaming Liu, Keisuke Ishizuka, Toyoko Arai, Masahiko Tomitori","doi":"10.1093/jmicro/dfaf019","DOIUrl":null,"url":null,"abstract":"<p><p>Mechanical properties of nanomaterials (approximately 10 nm or less in size) has been attracted much attention for their application in nanoelectromechanical and advanced sensors. Recently, an in-situ transmission electron microscope (TEM) holder with a length extension resonator (LER) of quartz crystal as a force sensor, called Microscopic nanomechanical measurement (MNM) method, has been developed. It enables us to estimate not only Young's modulus but also critical shear stress for nanomaterials precisely. In this review, the principle of this novel method is introduced and the mechanical characterization of nanomaterials revealed by this method are presented. (1) The size dependence of Young's modulus of gold nanocontacts when stretched in the [111] direction was measured, which could be explained by summing the bulk and surface Young's moduli weighted according to the ratio of internal to surface atoms. Bulk and surface Young's modulus was estimated to be 119 and 22 GPa, respectively. (2) Young's modulus of MoS2 nanoribbons with armchair edge increased with decreasing the width, which indicated that the armchair edge bonds were stiffer than those inside the nanoribbon. (3) By measuring stiffness of Pt atomic chains consisting of two to five atoms, bond stiffnesses at the middle of the chain and at the connection to the base were estimated to be 25 and 23 N/m, respectively, which were higher than the bulk bond stiffness. (4) Critical shear stress of Au nanocontacts was estimated to be 0.94 GPa by measuring the LER amplitude dependence of dissipative energy.</p>","PeriodicalId":74193,"journal":{"name":"Microscopy (Oxford, England)","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microscopy (Oxford, England)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/jmicro/dfaf019","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Mechanical properties of nanomaterials (approximately 10 nm or less in size) has been attracted much attention for their application in nanoelectromechanical and advanced sensors. Recently, an in-situ transmission electron microscope (TEM) holder with a length extension resonator (LER) of quartz crystal as a force sensor, called Microscopic nanomechanical measurement (MNM) method, has been developed. It enables us to estimate not only Young's modulus but also critical shear stress for nanomaterials precisely. In this review, the principle of this novel method is introduced and the mechanical characterization of nanomaterials revealed by this method are presented. (1) The size dependence of Young's modulus of gold nanocontacts when stretched in the [111] direction was measured, which could be explained by summing the bulk and surface Young's moduli weighted according to the ratio of internal to surface atoms. Bulk and surface Young's modulus was estimated to be 119 and 22 GPa, respectively. (2) Young's modulus of MoS2 nanoribbons with armchair edge increased with decreasing the width, which indicated that the armchair edge bonds were stiffer than those inside the nanoribbon. (3) By measuring stiffness of Pt atomic chains consisting of two to five atoms, bond stiffnesses at the middle of the chain and at the connection to the base were estimated to be 25 and 23 N/m, respectively, which were higher than the bulk bond stiffness. (4) Critical shear stress of Au nanocontacts was estimated to be 0.94 GPa by measuring the LER amplitude dependence of dissipative energy.

微观纳米力学测量方法揭示纳米材料的力学特性。
纳米材料(尺寸小于等于10nm)的力学性能由于其在纳米机电传感器和先进传感器中的应用而受到广泛关注。近年来,研究了一种以石英晶体长度扩展谐振器(LER)作为力传感器的原位透射电子显微镜(TEM)支架,称为微观纳米机械测量(MNM)方法。它使我们不仅可以精确地估计杨氏模量,而且可以精确地估计纳米材料的临界剪切应力。本文介绍了这种新方法的原理,并介绍了该方法所揭示的纳米材料的力学特性。(1)测量了金纳米触点在[111]方向拉伸时杨氏模量的尺寸依赖性,这可以用根据内表面原子的比例加权的体积和表面杨氏模量的总和来解释。体积和表面杨氏模量分别为119和22 GPa。(2)扶手椅边MoS2纳米带的杨氏模量随着宽度的减小而增大,扶手椅边的化学键比纳米带内部的化学键更硬。(3)通过测量2 ~ 5个原子组成的Pt原子链的刚度,估计链中部和与碱连接处的键刚度分别为25 N/m和23 N/m,高于体键刚度。(4)通过测量耗散能的LER幅值依赖性,估计金纳米触点的临界剪切应力为0.94 GPa。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信