欢迎登录材料期刊网

材料期刊网

高级检索

通过分子动力学模拟,对单壁碳纳米管中稳态机械波的激发条件进行了详细的研究.利用所施加的周期性机械外力,使单壁碳纳米管产生局部径向形变,该形变将以单壁碳纳米管的管壁为弹性媒质传播开去,从而在单壁碳纳米管中形成机械波;机械波产生的条件依赖于单壁碳纳米管波动系统能量的维持和受迫振动区域形变方向的控制;稳定机械波形成的最佳条件是碳纳米管的形变度和受迫振动频率之间的最优匹配,以及由此形成的单壁碳纳米管在周期性外力作用下产生的共振.

参考文献

[1] Li CY.;Chou TW. .Single-walled carbon nanotubes as ultrahigh frequency nanomechanical resonators - art. no. 073405[J].Physical review, B. Condensed matter and materials physics,2003(7):3405-0.
[2] A. M. Fennimore;T. D. Yuzvinsky;Wei-Qiang Han;M. S. Fuhrer;J. Cumings;A. Zettl .Rotational actuators based on carbon nanotubes[J].Nature,2003(6947):408-410.
[3] Wu J;Zang J;Larade B et al.Computational Design of Carbon Nanotube Electromechanical Pressure Sensors[J].Physical Review B,2004,69:153406(1-1534064).
[4] Mitra M;Gopalakrishnan S .Wave propagation analysis in carbon nanotube embedded composite using wavelet based spectral finite elements[J].Smart Materials & Structures,2006(1):104-122.
[5] Li CY;Chou TW .Elastic wave velocities in single-walled carbon nanotubes[J].Physical review, B. Condensed matter and materials physics,2006(24):5407-1-5407-5-0.
[6] Natsuki T;Hayashi T;Endo M .Wave propagation of carbon nanotubes embedded in an elastic medium[J].Journal of Applied Physics,2005(4):4307-1-4307-6-0.
[7] Wang Q .Wave propagation in carbon nanotubes via nonlocal continuum mechanics[J].Journal of Applied Physics,2005(12):24301-1-24301-6-0.
[8] Wang LF;Hu HY .Flexural wave propagation in single-walled carbon nanotubes[J].Physical review, B. Condensed matter and materials physics,2005(19):5412-1-5412-7-0.
[9] Analysis of surface acoustic wave propagation on a cylinder using laser ultrasonics[J].Applied physics letters,2003(25):4608-4610.
[10] Mitra M;Gopalakrishnan S .Wave propagation in imperfectly bonded single walled carbon nanotube-polymer composites[J].Journal of Applied Physics,2007(8):084301-1-084301-8-0.
[11] Chen M;Zang J;Xiao D Q et al.Mechanical Wave Propagation in Carbon Nanotubes Driven by an Oscillating Tip Actuator[J].Journal of Applied Physics,2009,105:026102(1-0261023).
[12] Tersoff J .Modeling Solid-state Chemistry:Interatomic Potentials for Multicomponent Systems[J].Physical Review B,1989,39:5566-5568.
[13] Melchonna S;Ciccotti G;Holian B L .Hoover NPT Dynamics for System Varying in Shape and Size[J].Molecular Physics,1993,78:533-544.
[14] Zang J.;Treibergs A.;Han Y.;Liu F. .Geometric constant defining shape transitions of carbon nanotubes under pressure - art. no. 105501[J].Physical review letters,2004(10):5501-0.
[15] Zang J;Aldás-Palacios O;Liu F .MD Simulation of Structural and Mechanical Transformation of Single-walled Carbon Nanotubes under Pressure[J].Communications in Computational Physics,2007,2:451-465.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%