Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range

doi:10.1088/1674-1056/19/6/067801

中国物理B ›› 2010, Vol. 19 ›› Issue (6): 67801-067801.doi: 10.1088/1674-1056/19/6/067801

Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range

吴昱明¹, 李乐伟¹, 庄蕾蕾², 桂太龙², 王玥³, 吴群⁴

(1)Department of Electrical and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore; (2)Department of Electronic Science and Technology, Harbin University of Science and Technology, Harbin 150080, China; (3)School of Electronics and Information Technology, Harbin Institute of Technology, Harbin 150001, China;Department of Electronic Science and Technology, Harbin University of Science and Technology, Harbin 150080, China; (4)School of Electronics and Information Technology, Harbin Institute of Technology, Harbin 150001, China;State Key Laboratory of Millimeter Wave, Southeast University, Nanjing 211189, China

收稿日期:2009-03-31 出版日期:2010-06-15 发布日期:2010-06-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.~60571026), the Open Project of State Key Laboratory of Millimeter Wave (Grant No.~K201006) and the Science and Technology Research Foundation of Heilongjiang Education Bureau

Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range

Wu Qun(吴群)^a)d)†, Wang Yue(王玥)^a)b), Wu Yu-Ming(吴昱明)^c), Zhuang Lei-Lei(庄蕾蕾)^b), Li Le-Wei(李乐伟)^c), and Gui Tai-Long(桂太龙)^b)

^a School of Electronics and Information Technology, Harbin Institute of Technology, Harbin 150001, China; ^b Department of Electronic Science and Technology, Harbin University of Science and Technology, Harbin 150080, China; ^c Department of Electrical and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore; ^d State Key Laboratory of Millimeter Wave, Southeast University, Nanjing 211189, China

Received:2009-03-31 Online:2010-06-15 Published:2010-06-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.~60571026), the Open Project of State Key Laboratory of Millimeter Wave (Grant No.~K201006) and the Science and Technology Research Foundation of Heilongjiang Education Bureau

摘要/Abstract

摘要： This paper investigates the radiation characteristics of metal single-walled zig-zag carbon nanotubes as a dipole antenna at terahertz wave range. The current distribution, input impedance and mutual impedance are calculated for various geometrical parameters of vertically-aligned carbon nanotubes. The numerical results demonstrate the properties of the antenna depending strongly on the geometrical parameters such as the radius, the lengths of carbon nantobues, and the spacing between nanotubes. It is found that the zig-zag carbon nanotubes exhibit very high input impedance and the mutual impedances for antenna array applications. These unique high impedance properties are different from the conventional metal thin wire antenna. The far-field patterns and gain of antenna array are also calculated. The maximum gain of array of 100-element array is up to 20.0~dB, which is larger than the gain of 0.598~dB of single dipole antenna at distance d = 0.5\lambda .

Abstract: This paper investigates the radiation characteristics of metal single-walled zig-zag carbon nanotubes as a dipole antenna at terahertz wave range. The current distribution, input impedance and mutual impedance are calculated for various geometrical parameters of vertically-aligned carbon nanotubes. The numerical results demonstrate the properties of the antenna depending strongly on the geometrical parameters such as the radius, the lengths of carbon nantobues, and the spacing between nanotubes. It is found that the zig-zag carbon nanotubes exhibit very high input impedance and the mutual impedances for antenna array applications. These unique high impedance properties are different from the conventional metal thin wire antenna. The far-field patterns and gain of antenna array are also calculated. The maximum gain of array of 100-element array is up to 20.0 dB, which is larger than the gain of 0.598~dB of single dipole antenna at distance $d = 0.5\lambda $.

Key words: zig-zag carbon nanotube, dipole antenna, terahertz, impedance

中图分类号: (Antennas: theory, components and accessories)

84.40.Ba

85.35.Kt (Nanotube devices) 61.80.-x (Physical radiation effects, radiation damage) 78.70.Gq (Microwave and radio-frequency interactions)

吴群, 王玥, 吴昱明, 庄蕾蕾, 李乐伟, 桂太龙. Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range[J]. 中国物理B, 2010, 19(6): 67801-067801.

Wu Qun(吴群), Wang Yue(王玥), Wu Yu-Ming(吴昱明), Zhuang Lei-Lei(庄蕾蕾), Li Le-Wei(李乐伟), and Gui Tai-Long(桂太龙). Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range[J]. Chin. Phys. B, 2010, 19(6): 67801-067801.

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Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range

Characterization of the radiation from single-walled zig-zag carbon nanotubes at terahertz range

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