| 查看: 302 | 回复: 1 | |||
| 【奖励】 本帖被评价1次，作者meto增加金币 0.5 个 | |||
| 当前主题已经存档。 | |||
[资源]
SCIENCE上一篇重要的有关碳管力学性能的文章
|
|||
|
SCIENCE上一篇重要的有关碳管力学性能的文章 SCIENCE VOL. 277 26， 1997，1971-5. REPORTS Nanobeam Mechanics: Elasticity, Strength, and Toughness of Nanorods and Nanotubes Eric W. Wong,* Paul E. Sheehan,* Charles M. Lieber E. W. Wong and P. E. Sheehan, Department of Chemistry, Harvard University, Cambridge, MA 02138, USA. C. M. Lieber, Department of Chemistry and Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA. ABSTRACT: The Young’s modulus, strength, and toughness of nanostructures are important to proposed applications ranging from nanocomposites to probe microscopy, yet there is little direct knowledge of these key mechanical properties. Atomic force microscopy was used to determine the mechanical properties of individual, structurally isolated silicon carbide (SiC) nanorods (NRs) and multiwall carbon nanotubes (MWNTs) that were pinned at one end to molybdenum disulfide surfaces. The bending force was measured versus displacement along the unpinned lengths. The MWNTs were about two times as stiff as the SiC NRs. Continued bending of the SiC NRs ultimately led to fracture, whereas the MWNTs exhibited an interesting elastic buckling process. The strengths of the SiC NRs were substantially greater than those found previously for larger SiC structures, and they approach theoretical values. Because of buckling, the ultimate strengths of the stiffer MWNTs were less than those of the SiC NRs, although the MWNTs represent a uniquely tough, energy-absorbing material |
回复此楼» 收录本帖的淘帖专辑推荐
 感兴趣 |
» 猜你喜欢
二审4个多月了还是Awaiting Reviewer Scores
已经有4人回复
-
OpenAI又攻克数学难题了，离AI做有机合成还有多远？
已经有13人回复
-
申请科研项目纯靠实力能成功吗？
已经有7人回复
-
极限拉扯，如何抉择
已经有14人回复
-
课题组会帮你通过考核么？
已经有7人回复
-
入职后第一次管课题组的专利缴费，对账才发现官费比别人多掏了一倍
已经有6人回复
-
售一区SCI文章T0P，我:8O.551.O54,科目全,可十急
已经有9人回复
-
售SCI一区文章，我:8O5.5.1.O5.4,科目全,可伽急
已经有10人回复
-
售SCI一区T0P文章，我:8.O55.1.O.54,科目全,可十急
已经有8人回复
-
售SCI一区T0P文章，我:8.O55.1.O.54,科目全,可十急
已经有9人回复
10
