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Title: Bottom-up Design of Three-Dimensional Carbon-Honeycomb with Superb Specific Strength and High Thermal Conductivity
Author: Pang ZQ; Gu XK; Wei YJ(魏宇杰); Yang RG; Dresselhaue MS
Source: NANO LETTERS
Issued Date: 2017
Volume: 17, Issue:1, Pages:179-185
Abstract: Low-dimensional carbon allotropes, from fullerenes, carbon nanotubes, to graphene, have been broadly explored due to their outstanding and special properties. However, there exist significant challenges in retaining such properties of basic building blocks when scaling them up to three-dimensional materials and structures for many technological applications. Here we show theoretically the atomistic structure of a stable three-dimensional carbon honeycomb (C-honeycomb) structure with superb mechanical and thermal properties. A combination of sp(2) bonding in the wall and sp(3) bonding in the triple junction of C-honeycomb is the key to retain stability of C-honeycomb. The specific strength could be the best in structural carbon materials, and this strength remains at,a high level but tunable with different cell sizes. C-honeycomb is also found to have a very high thermal conductivity, for example, >100 W/mK along the axis of the hexagonal cell with a density only similar to 0.4 g/cm(3). Because of the low density and high thermal conductivity, the specific thermal conductivity of C-honeycoMbs is larger than most engineering materials, including metals and high thermal conductivity semiconductors, as well as lightweight CNT arrays and graphene-based nanocomposites. Such high specific strength, high thermal conductivity, and anomalous Poisson's effect in C-honeycomb render it appealing for the use in various engineering practices.
Keyword: Carbon honeycomb ; specific strength ; thermal conductivity ; sp(3)-bonding
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. ; Yang, RG (reprint author), Univ Colorado, Dept Mech Engn & Mat Sci, Boulder, CO 80309 USA. ; Yang, RG (reprint author), Univ Colorado, Engn Program, Boulder, CO 80309 USA. ; Dresselhaue, MS (reprint author), MIT, Dept Phys & EECS, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
Correspondent Email: yujie_wei@lnm.imech.ac.cn ; ronggui.yang@colorado.edu ; millie@mgm.mit.edu
DOI: 10.1021/acs.nanolett.6b03711
Related URLs: 查看原文
DOC Type: 期刊论文
WOS Subject: Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS Subject Extended: Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS Keyword Plus: Carbon honeycomb ; specific strength ; thermal conductivity ; sp(3)-bonding
WOS ID: WOS:000392036600026
ISSN: 1530-6984
Funder: National Natural Science Foundation of China (NSFC) [11425211] ; U.S. National Science Foundation [1512776, 1507806] ; Teets Family Endowed Doctoral Fellowship ; National Science Foundation [0821794]
Rank: [Pang, Zhenqian; Wei, Yujie] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Gu, Xiaokun; Yang, Ronggui] Univ Colorado, Dept Mech Engn & Mat Sci, Boulder, CO 80309 USA; [Gu, Xiaokun; Yang, Ronggui] Univ Colorado, Engn Program, Boulder, CO 80309 USA; [Dresselhaue, Mildred S.] MIT, Dept Phys & EECS, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Classification: 一类
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Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/59960
Appears in Collections:非线性力学国家重点实验室_期刊论文

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