Study of THz Wave Propagation in Tilted Carbon Nanotube Arrays Based on Symplectic Formulation

ZHANG Yu; DENG Zi-chen; ZHAO Peng

doi:10.3879/j.issn.1000-0887.2016.02.002

Volume 37 Issue 2

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ZHANG Yu, DENG Zi-chen, ZHAO Peng. Study of THz Wave Propagation in Tilted Carbon Nanotube Arrays Based on Symplectic Formulation[J]. Applied Mathematics and Mechanics, 2016, 37(2): 127-137. doi: 10.3879/j.issn.1000-0887.2016.02.002

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Study of THz Wave Propagation in Tilted Carbon Nanotube Arrays Based on Symplectic Formulation

doi: 10.3879/j.issn.1000-0887.2016.02.002

School of Mechanics and Civil. & Architecture, Northwestern Polytechnical University, Xi’an 710072, P.R.China

Funds: The National Natural Science Foundation of China(11372252)

Received Date: 2015-09-08
Rev Recd Date: 2015-11-30
Publish Date: 2016-02-15

Abstract

Abstract

With the equivalent medium model, the problem of planar waveguides filled with periodic parallel finite-length carbon nanotube arrays was introduced into the Hamilton system. Firstly, based on the equivalent medium theory, the dielectric property of the tilted carbon nanotubes was derived. Then, in view of the ideal conductive boundary conditions, the symplectic formulation was used to solve the eigenvalue problem of electromagnetic wave propagation and the dispersion relation was obtained. The numerical results show that, the dominant mode of the electromagnetic waves can hardly propagate in the carbon nanotube arrays in a narrow frequency band, while in the rest frequency bands it propagates well with very low loss, which means the carbon nanotube arrays have excellent transmission characteristics compared with the traditional materials. Through the optimization design, the best tilt angle was given to greatly enhance the transmission characteristics in the whole frequency range. The present research of THz wave propagation in carbon nanotube arrays makes a theoretical reference for the design of waveguide devices in the THz frequency bands.
- symplectic geometry,
- terahertz,
- tilted carbon nanotube array,
- electromagnetic waveguide

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References(26)

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