CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Size Effects on the Mechanical Properties of Nanoporous Graphene Networks
Tang, DM; Ren, CL; Zhang, L; Tao, Y; Zhang, P; Lv, W; Jia, XL; Jiang, XJ; Zhou, GM; Ohmura, T; Huai, P; Li, F; Bando, Y; Golberg, D; Yang, QH
2019
Source PublicationADVANCED FUNCTIONAL MATERIALS
ISSN1616-301X
Volume29Issue:19Pages:
Subtype期刊论文
AbstractIt is essential to understand the size scaling effects on the mechanical properties of graphene networks to realize the potential mechanical applications of graphene assemblies. Here, a highly dense-yet-nanoporous graphene monolith (HPGM) is used as a model material of graphene networks to investigate the dependence of mechanical properties on the intrinsic interplanar interactions and the extrinsic specimen size effects. The interactions between graphene sheets could be enhanced by heat treatment and the plastic HPGM is transformed into a highly elastic network. A strong size effect is revealed by in situ compression of micro- and nanopillars inside electron microscopes. Both the modulus and strength are drastically increased as the specimen size reduces to approximate to 100 nm, because of the reduced weak links in a small volume. Molecular dynamics simulations reveal the deformation mechanism involving slip-stick sliding, bending, buckling of graphene sheets, collapsing, and densification of graphene cells. In addition, a size-dependent brittle-to-ductile transition of the HPGM nanopillars is discovered and understood by the competition between volumetric deformation energy and critical dilation energy.
KeywordMULTIWALLED CARBON NANOTUBES MICROPILLAR COMPRESSION VOLUMETRIC CAPACITANCE BRITTLE TRANSITION LIQUID-CRYSTALS STRENGTH OXIDE DEFORMATION FIBERS DUCTILITY
DOI10.1002/adfm.201900311
Indexed BySCI
Language英语
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31819
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.NIMS, Namiki 1-1 & Sengen 1-2-1, Tsukuba, Ibaraki 3050044, Japan;
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;
3.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China;
4.Chongqing Univ, Coll Mat Sci & Engn, Electron Microscopy Ctr, Shazhengjie 174, Chongqing 400044, Peoples R China;
5.Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Nanoyang Grp, Tianjin 300072, Peoples R China;
6.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China;
7.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China;
8.Tsinghua Univ, Grad Sch Shenzhen, Engn Lab Functionalized Carbon Mat, Shenzhen Key Lab Graphene Based Mat, Shenzhen 518055, Peoples R China;
9.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China;
10.Univ Wollongong, Australian Inst Innovat Mat, Squires Way, North Wollongong, NSW 2500, Australia;
11.Tianjin Univ, Inst Mol Plus, 92 Weijin Rd, Tianjin 300072, Peoples R China;
12.QUT, Sch Chem Phys & Mech Engn, 2 George St, Brisbane, Qld 4000, Australia
Recommended Citation
GB/T 7714
Tang, DM,Ren, CL,Zhang, L,et al. Size Effects on the Mechanical Properties of Nanoporous Graphene Networks[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(19):—.
APA Tang, DM.,Ren, CL.,Zhang, L.,Tao, Y.,Zhang, P.,...&Yang, QH.(2019).Size Effects on the Mechanical Properties of Nanoporous Graphene Networks.ADVANCED FUNCTIONAL MATERIALS,29(19),—.
MLA Tang, DM,et al."Size Effects on the Mechanical Properties of Nanoporous Graphene Networks".ADVANCED FUNCTIONAL MATERIALS 29.19(2019):—.
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