Molecular dynamics simulations of carbon nanotube oscillators deformed by encapsulated copper nanowires

被引：26

作者：

Kang, Jeong Won ^{[2
]}

Choi, Young Gyu ^{[2
]}

Lee, Jun Ha ^{[3
]}

Kwon, Oh Kuen ^{[4
]}

Hwang, Ho Jung ^{[1
]}

机构：

[1] Chung Ang Univ, Sch Elect & Elect Engn, Seoul 156756, South Korea

[2] Chungju Natl Univ, Dept Comp Engn, Chungju, South Korea

[3] Sangmyung Univ, Dept Comp Syst Engn, Cheonan, South Korea

[4] Semyang Univ, Dept Elect Engn, Jecheon, South Korea

来源：

MOLECULAR SIMULATION | 2008年 / 34卷 / 09期

关键词：

nanotube oscillators; gigahertz oscillators; molecular dynamics;

D O I：

10.1080/08927020802301953

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pure carbon nanotube (CNT) oscillators are compared to the corresponding CNT oscillators encapsulating copper nanowires (Cu@CNTs) by molecular dynamics simulations. The classical oscillation theory provides a fairly good estimate of the mass dependence of the operating frequency when the CNT surface is not deformed by the Cu nanowire. The structural deformations of the CNT induced by the encapsulated copper nanowire have a greater effect on the oscillation frequency than the mass of the copper nanowire. The excess forces of the Cu@CNT oscillator are slightly higher than those of the CNT oscillator and the excess van der Waals forces induced by the inter-wall interactions are 17 times higher than the excess forces induced by the Cu nanowire-CNT interactions.

引用

页码：829 / 835

页数：7

共 39 条

[1] Predicting trends in rate parameters for self-diffusion on FCC metal surfaces [J].

Agrawal, PM ;

Rice, BM ;

Thompson, DL .

SURFACE SCIENCE, 2002, 515 (01) :21-35

[2] Interlayer sliding force of individual multiwall carbon nanotubes [J].

Akita, S ;

Nakayama, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2003, 42 (7B) :4830-4833

[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] Structures of ultrathin copper nanowires encapsulated in carbon nanotubes [J].

Choi, WY ;

Kang, JW ;

Hwang, HJ .

PHYSICAL REVIEW B, 2003, 68 (19)

[5] Chaotic signature in the motion of coupled carbon nanotube oscillators [J].

Coluci, VR ;

Legoas, SB ;

de Aguiar, MAM ;

Galvao, DS .

NANOTECHNOLOGY, 2005, 16 (04) :583-589

[6] Localization and nonlinear resistance in telescopically extended nanotubes [J].

Cumings, J ;

Zettl, A .

PHYSICAL REVIEW LETTERS, 2004, 93 (08) :086801-1

[7] Low-friction nanoscale linear bearing realized from multiwall carbon nanotubes [J].

Cumings, J ;

Zettl, A .

SCIENCE, 2000, 289 (5479) :602-604

[8] Atomistic study of interaction zone at copper-carbon interfaces [J].

Dorfman, S ;

Mundim, KC ;

Fuks, D ;

Berner, A ;

Ellis, DE ;

Van Humbeeck, J .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2001, 15 (1-2) :191-193

[9] Coupled defect-size effects on interlayer friction in multiwalled carbon nanotubes [J].

Guo, WL ;

Zhong, WY ;

Dai, YT ;

Li, SA .

PHYSICAL REVIEW B, 2005, 72 (07)

[10] Energy dissipation in gigahertz oscillators from multiwalled carbon nanotubes [J].

Guo, WL ;

Guo, YF ;

Gao, HJ ;

Zheng, QS ;

Zhong, WY .

PHYSICAL REVIEW LETTERS, 2003, 91 (12) :125501-125501

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