Direct observation of autonomous self-healing in silver

IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Matter Pub Date : 2024-11-06 DOI:10.1016/j.matt.2024.07.009
Jianlin Wang , Qiuhao Xu , Muhua Sun , Jiyu Xu , Pan Chen , Bohan Yu , Zhongqi Wu , Zitao Chen , Xudan Huang , Huacong Sun , Lei Liao , Chen Cai , Xiaomin Li , Lifen Wang , Xuezeng Tian , Zhi Xu , Sheng Meng , Wenlong Wang , Xuedong Bai
{"title":"Direct observation of autonomous self-healing in silver","authors":"Jianlin Wang ,&nbsp;Qiuhao Xu ,&nbsp;Muhua Sun ,&nbsp;Jiyu Xu ,&nbsp;Pan Chen ,&nbsp;Bohan Yu ,&nbsp;Zhongqi Wu ,&nbsp;Zitao Chen ,&nbsp;Xudan Huang ,&nbsp;Huacong Sun ,&nbsp;Lei Liao ,&nbsp;Chen Cai ,&nbsp;Xiaomin Li ,&nbsp;Lifen Wang ,&nbsp;Xuezeng Tian ,&nbsp;Zhi Xu ,&nbsp;Sheng Meng ,&nbsp;Wenlong Wang ,&nbsp;Xuedong Bai","doi":"10.1016/j.matt.2024.07.009","DOIUrl":null,"url":null,"abstract":"<div><div>Although the concept of self-healing has undergone a recent resurgence of interest in polymers and other soft materials, it is extremely rare for metal solids to autonomously self-repair structural damage without any external trigger. Here, we report on the direct <em>in situ</em> observation of such an autonomous solid-state self-healing behavior in nanoscale silver (Ag) by utilizing atomic-resolution transmission electron microscopy (TEM). Two representative kinds of structural damage—both nanopores and nanocracks—are observed to undergo automatic self-repair at room temperature and well below (down to 173 K) without any external intervention. Importantly, such an autonomous self-healing phenomenon does not occur in gold (Au) at room temperature, as it is hindered by the stronger Au-Au bonding resulting from the known relativistic effect. A combination of atomistic imaging and molecular dynamics simulation unravels that the self-healing process is accomplished through surface-mediated diffusion of Ag atoms as driven by chemical potential imbalance due to the Gibbs-Thomson effect.</div></div>","PeriodicalId":388,"journal":{"name":"Matter","volume":"7 11","pages":"Pages 3932-3948"},"PeriodicalIF":17.3000,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Matter","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2590238524004028","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Although the concept of self-healing has undergone a recent resurgence of interest in polymers and other soft materials, it is extremely rare for metal solids to autonomously self-repair structural damage without any external trigger. Here, we report on the direct in situ observation of such an autonomous solid-state self-healing behavior in nanoscale silver (Ag) by utilizing atomic-resolution transmission electron microscopy (TEM). Two representative kinds of structural damage—both nanopores and nanocracks—are observed to undergo automatic self-repair at room temperature and well below (down to 173 K) without any external intervention. Importantly, such an autonomous self-healing phenomenon does not occur in gold (Au) at room temperature, as it is hindered by the stronger Au-Au bonding resulting from the known relativistic effect. A combination of atomistic imaging and molecular dynamics simulation unravels that the self-healing process is accomplished through surface-mediated diffusion of Ag atoms as driven by chemical potential imbalance due to the Gibbs-Thomson effect.

Abstract Image

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
直接观察银的自主自愈
虽然自愈合的概念最近在聚合物和其他软材料中再次引起人们的关注,但金属固体在没有任何外部触发的情况下自主自我修复结构损伤的情况却极为罕见。在此,我们报告了利用原子分辨率透射电子显微镜(TEM)在纳米级银(Ag)中直接原位观察到的这种自主固态自愈合行为。观察到两种具有代表性的结构损伤--纳米孔和纳米裂缝--在室温和远低于室温(低至 173 K)的条件下进行自动自我修复,无需任何外部干预。重要的是,金(Au)在室温下不会出现这种自主自修复现象,因为它受到已知相对论效应产生的更强金-金键的阻碍。原子成像和分子动力学模拟的结合揭示了自愈合过程是通过表面介导的银原子扩散完成的,而扩散是由吉布斯-汤姆森效应导致的化学势不平衡驱动的。
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 去求助
来源期刊
Matter
Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
26.30
自引率
2.60%
发文量
367
期刊介绍: Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.
期刊最新文献
Biomimetic artificial neuromuscular fiber bundles with built-in adaptive feedback Massively multiplexed optical recording with polychromatic DNA frameworks Polyfunctional eutectogels with multiple hydrogen-bond-shielded amorphous networks for soft ionotronics Brilliant colorful daytime radiative cooling coating mimicking scarab beetle Soft bio-metamaterials with high acoustic transparency and gradient refractive index for tunable acoustic beamformer
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1