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Materials 2013, 6(6), 2393-2399; doi:10.3390/ma6062393

Terahertz Wave Propagation in a Nanotube Conveying Fluid Taking into Account Surface Effect

1
Department of Astronautics, Shenyang Aerospace University, Shenyang 110136, China
2
School of Astronautics, Harbin Institute of Technology, Harbin 100124, China
*
Author to whom correspondence should be addressed.
Received: 2 May 2013 / Revised: 3 June 2013 / Accepted: 3 June 2013 / Published: 10 June 2013
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Abstract

In nanoscale structure sizes, the surface-to-bulk energy ratio is high and the surface effects must be taken into account. Surface effect plays a key role in accurately predicting the vibration behavior of nanostructures. In this paper, the wave behaviors of a single-walled carbon nanotube (CNT) conveying fluid are studied. The nonlocal Timoshenko beam theory is used and the surface effect is taken into account. It is found that the fluid can flow at a very high flow velocity and the wave propagates in the terahertz frequency range. The surface effects can significantly enhance the propagating frequency. This finding is different from the classical model where the surface effect is neglected.
Keywords: single-walled carbon nanotube; surface effect; nonlocal Timoshenko beam theory; terahertz wave single-walled carbon nanotube; surface effect; nonlocal Timoshenko beam theory; terahertz wave
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Zhang, Y.-W.; Yang, T.-Z.; Zang, J.; Fang, B. Terahertz Wave Propagation in a Nanotube Conveying Fluid Taking into Account Surface Effect. Materials 2013, 6, 2393-2399.

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