Ultimate strength of carbon nanotubes: A theoretical study

被引：232

作者：

Zhao, QZ ^{[1
]}

Nardelli, MB ^{[1
]}

Bernholc, J ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.65.144105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ultimate strength of carbon nanotubes is investigated by large-scale quantum calculations. While the formation energy of strain-induced topological defects determines the thermodynamic limits of the elastic response and of mechanical resistance to applied tension, it is found that the activation barriers for the formation of such defects are much larger than estimated previously. The theoretical results indicate a substantially greater resilience and strength, and show that the ultimate strength limit of carbon nanotubes has yet to be reached experimentally. Nanotubes are indeed the strongest material known.

引用

页码：1 / 6

页数：6

共 40 条

[1] PSEUDOPOTENTIALS THAT WORK - FROM H TO PU [J].

BACHELET, GB ;

HAMANN, DR ;

SCHLUTER, M .

PHYSICAL REVIEW B, 1982, 26 (08) :4199-4228

[2] Nanotubes [J].

Bernholc, J ;

Roland, C ;

Yakobson, BI .

CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 1997, 2 (06) :706-715

[3] EMPIRICAL POTENTIAL FOR HYDROCARBONS FOR USE IN SIMULATING THE CHEMICAL VAPOR-DEPOSITION OF DIAMOND FILMS [J].

BRENNER, DW .

PHYSICAL REVIEW B, 1990, 42 (15) :9458-9471

[4] LARGE-SCALE ELECTRONIC-STRUCTURE CALCULATIONS WITH MULTIGRID ACCELERATION [J].

BRIGGS, EL ;

SULLIVAN, DJ ;

BERNHOLC, J .

PHYSICAL REVIEW B, 1995, 52 (08) :R5471-R5474

[5] Real-space multigrid-based approach to large-scale electronic structure calculations [J].

Briggs, EL ;

Sullivan, DJ ;

Bernholc, J .

PHYSICAL REVIEW B, 1996, 54 (20) :14362-14375

[6] GROUND-STATE OF THE ELECTRON-GAS BY A STOCHASTIC METHOD [J].

CEPERLEY, DM ;

ALDER, BJ .

PHYSICAL REVIEW LETTERS, 1980, 45 (07) :566-569

[7] Pure carbon nanoscale devices: Nanotube heterojunctions [J].

Chico, L ;

Crespi, VH ;

Benedict, LX ;

Louie, SG ;

Cohen, ML .

PHYSICAL REVIEW LETTERS, 1996, 76 (06) :971-974

[8] FULLY COLLAPSED CARBON NANOTUBES [J].

CHOPRA, NG ;

BENEDICT, LX ;

CRESPI, VH ;

COHEN, ML ;

LOUIE, SG ;

ZETTL, A .

NATURE, 1995, 377 (6545) :135-138

[9] FLEXIBILITY OF GRAPHENE LAYERS IN CARBON NANOTUBES [J].

DESPRES, JF ;

DAGUERRE, E ;

LAFDI, K .

CARBON, 1995, 33 (01) :87-89

[10]

Dresselhaus M. S., 1996, SCI FULLERENES CARBO

← 1 2 3 4 →