Super-durable ultralong carbon nanotubes

被引：127

作者：

Bai, Yunxiang ^{[1
,2
]}

Yue, Hongjie ^{[1
]}

Wang, Jin ^{[2
,3
]}

Shen, Boyuan ^{[1
]}

Sun, Silei ^{[1
]}

Wang, Shijun ^{[2
,3
]}

Wang, Haidong ^{[4
]}

Li, Xide ^{[2
,3
]}

Xu, Zhiping ^{[2
,3
]}

Zhang, Rufan ^{[1
]}

Wei, Fei ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab Green Chem React Engn & Technol, Dept Chem Engn, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Ctr Nano & Micro Mech, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China

[4] Tsinghua Univ, Key Lab Thermal Sci & Power Engn, Minist Educ, Sch Aerosp, Beijing 100084, Peoples R China

来源：

SCIENCE | 2020年 / 369卷 / 6507期

基金：

中国国家自然科学基金;

关键词：

FATIGUE BEHAVIOR; STRENGTH; TENSILE; FRACTURE; SUPERLUBRICITY; SPECTROSCOPY; GRAPHENE; GROWTH;

D O I：

10.1126/science.aay5220

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Fatigue resistance is a key property of the service lifetime of structural materials. Carbon nanotubes (CNTs) are one of the strongest materials ever discovered, but measuring their fatigue resistance is a challenge because of their size and the lack of effective measurement methods for such small samples. We developed a noncontact acoustic resonance test system for investigating the fatigue behavior of centimeter-long individual CNTs. We found that CNTs have excellent fatigue resistance, which is dependent on temperature, and that the time to fatigue fracture of CNTs is dominated by the time to creation of the first defect.

引用

页码：1104 / +

页数：39

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