GSTDTAP  > 资源环境科学
DOI10.1038/s41467-018-07814-6
Spatially heterogeneous dynamics in a metallic glass forming liquid imaged by electron correlation microscopy
Zhang, Pei1; Maldonis, Jason J.1; Liu, Ze2; Schroers, Jan2; Voyles, Paul M.1
2018-03-19
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
出版年2018
卷号9
文章类型Article
语种英语
国家USA
英文摘要

Supercooled liquids exhibit spatial heterogeneity in the dynamics of their fluctuating atomic arrangements. The length and time scales of the heterogeneous dynamics are central to the glass transition and influence nucleation and growth of crystals from the liquid. Here, we report direct experimental visualization of the spatially heterogeneous dynamics as a function of temperature in the supercooled liquid state of a Pt-based metallic glass, using electron correlation microscopy with sub-nanometer resolution. An experimental four-point space-time correlation function demonstrates a growing dynamic correlation length upon cooling of the liquid toward the glass transition temperature.. as a function of the relaxation time tau are in good agreement with Adam-Gibbs theory, inhomogeneous mode-coupling theory and random first-order transition theory of the glass transition. The same experiments demonstrate the existence of a nanometer thickness near-surface layer with order of magnitude shorter relaxation time than inside the bulk.


领域资源环境
收录类别SCI-E
WOS记录号WOS:000427698200004
WOS关键词FAST SURFACE-DIFFUSION ; CORRELATION SPECTROSCOPY ; STRUCTURAL RELAXATION ; SUPERCOOLED LIQUIDS ; CRYSTAL NUCLEATION ; GROWING LENGTH ; TIME SCALES ; TRANSITION ; FLUCTUATIONS ; GROWTH
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
URL查看原文
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/204138
专题资源环境科学
作者单位1.Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA;
2.Yale Univ, Dept Mech Engn & Mat Sci, New Haven, CT 06511 USA
推荐引用方式
GB/T 7714
Zhang, Pei,Maldonis, Jason J.,Liu, Ze,et al. Spatially heterogeneous dynamics in a metallic glass forming liquid imaged by electron correlation microscopy[J]. NATURE COMMUNICATIONS,2018,9.
APA Zhang, Pei,Maldonis, Jason J.,Liu, Ze,Schroers, Jan,&Voyles, Paul M..(2018).Spatially heterogeneous dynamics in a metallic glass forming liquid imaged by electron correlation microscopy.NATURE COMMUNICATIONS,9.
MLA Zhang, Pei,et al."Spatially heterogeneous dynamics in a metallic glass forming liquid imaged by electron correlation microscopy".NATURE COMMUNICATIONS 9(2018).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhang, Pei]的文章
[Maldonis, Jason J.]的文章
[Liu, Ze]的文章
百度学术
百度学术中相似的文章
[Zhang, Pei]的文章
[Maldonis, Jason J.]的文章
[Liu, Ze]的文章
必应学术
必应学术中相似的文章
[Zhang, Pei]的文章
[Maldonis, Jason J.]的文章
[Liu, Ze]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。