Size Effects on the Mechanical Properties of Nanoporous Graphene Networks
文献类型：期刊论文
| 作者 | Tang, DM; Ren, CL; Zhang, L; Tao, Y; Zhang, P; Lv, W; Jia, XL; Jiang, XJ; Zhou, GM; Ohmura, T |
| 刊名 | ADVANCED FUNCTIONAL MATERIALS
 |
| 出版日期 | 2019 |
| 卷号 | 29期号:19页码:— |
| ISSN号 | 1616-301X |
| 关键词 | MULTIWALLED CARBON NANOTUBES MICROPILLAR COMPRESSION VOLUMETRIC CAPACITANCE BRITTLE TRANSITION LIQUID-CRYSTALS STRENGTH OXIDE DEFORMATION FIBERS DUCTILITY |
| DOI | 10.1002/adfm.201900311 |
| 文献子类 | 期刊论文 |
| 英文摘要 | It 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. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31819]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China; 2.NIMS, Namiki 1-1 & Sengen 1-2-1, Tsukuba, Ibaraki 3050044, Japan; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 4.Chongqing Univ, Coll Mat Sci & Engn, Electron Microscopy Ctr, Shazhengjie 174, Chongqing 400044, Peoples R China; 5.Tsinghua Univ, Grad Sch Shenzhen, Engn Lab Functionalized Carbon Mat, Shenzhen Key Lab Graphene Based Mat, Shenzhen 518055, Peoples R China; 6.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China; 7.Univ Wollongong, Australian Inst Innovat Mat, Squires Way, North Wollongong, NSW 2500, Australia; 8.Tianjin Univ, Inst Mol Plus, 92 Weijin Rd, Tianjin 300072, Peoples R China; 9.QUT, Sch Chem Phys & Mech Engn, 2 George St, Brisbane, Qld 4000, Australia 10.Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Nanoyang Grp, Tianjin 300072, Peoples R China; |
| 推荐引用方式 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):—. |
入库方式： OAI收割
来源：上海应用物理研究所
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