中国科学院力学研究所机构知识库
Advanced  
IMECH-IR  > 非线性力学国家重点实验室  > 期刊论文
Title:
Grain misorientation and grain-boundary rotation dependent mechanical properties in polycrystalline graphene
Author: Wu JT(吴江涛); Wei YJ(魏宇杰)
Source: JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
Issued Date: 2013-06
Volume: 61, Issue:6, Pages:1421-1432
Abstract: In two-dimensional polycrystalline graphene, two angular degrees of freedom (DOF) are needed to define a general grain boundary (GB): the misorientation of two grains and the rotation of the boundary line. Via both molecular dynamics simulations and theoretical analysis, we see that the density of GB defects strongly depends on grain misorientation but is insensitive to GB rotation. And reveal the dependence of mechanical properties on grain misorientation and GB rotation in polycrystalline graphene. We find that the dependence of GB normal strength on grain misorientation and GB rotation in graphene stems from the superposition of the stress field induced by a pentagon-heptagon pair itself to that from the interaction between the other defects and the one under consideration. Based on MD simulations and ab initio calculations, we show that failure starts from the bond shared by hexagon-heptagon rings. We then apply continuum mechanics to explain the dependence of GB normal strength on the two angular DOF in graphene with pentagon-heptagon rings. The investigation showed here supplies valuable guidance to develop multiscale and multiphysics models for graphene.
Keyword: Polycrystalline graphene ; Grain misorientation ; Grain boundary rotation ; Disclination ; Density functional theory calculation
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
Correspondent Email: yujie_wei@Inm.imech.ac.cn
Related URLs: 查看原文
WOS ID: WOS:000318579500010
ISSN: 0022-5096
Rank: [Wu, Jiangtao; Wei, Yujie] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
Subject: 固体力学
Department: LNM微结构计算力学(筹)
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/46986
Appears in Collections:非线性力学国家重点实验室_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
IMCAS-J2013-125.pdf(3103KB)----开放获取View Download

Recommended Citation:
Wu JT,Wei YJ. Grain misorientation and grain-boundary rotation dependent mechanical properties in polycrystalline graphene[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2013-06-01,61(6):1421-1432.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wu JT(吴江涛)]'s Articles
[Wei YJ(魏宇杰)]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wu JT(吴江涛)]‘s Articles
[Wei YJ(魏宇杰)]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: IMCAS-J2013-125.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院力学研究所 - Feedback
Powered by CSpace