Chin. Phys. Lett.  2005, Vol. 22 Issue (5): 1243-1245    DOI:
Original Articles |
Effects of Substrates with Different Dielectric Parameters on Left-Handed Frequency of Left-Handed Materials
QUAN Bao-Gang1;LI Chao2;SUI Qiang3;LI Jun-Jie1;LIU Wu-Ming1;LI Fang2;GU Chang-Zhi1
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 2Institute of Electronics, Chinese Academy of Sciences, Beijing 100080 3School of Information, Communication University of China, Beijing 100024
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QUAN Bao-Gang, LI Chao, SUI Qiang et al  2005 Chin. Phys. Lett. 22 1243-1245
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Abstract Wedge-shaped left-handed materials (LHMs) with split ring resonators and wires structures are fabricated by photolithography and lift-off techniques, and the variation of left-handed frequency induced by substrates with different dielectric parameters is investigated. The Snell refraction experiments of the LHM samples are carried out on an angular resoled microwave spectrometer, and the results indicate that the left-handed frequencies of the LHMs shifted downward from 10.57GHz to 9.74GHz when the dielectric parameters of the LHM substrates increase from 3.7 to 4.8. Moreover, the finite difference time domain method is used to simulate the microwave transmission properties of the left-handed materials with different substrates, and the experimental results are in agreement with the numerical simulation results. In addition, the reason for the shifting of the left-handed frequency of the LHMs is discussed theoretically.
Keywords: 78.20.Ci      41.20.Jb      42.70.Qs     
Published: 01 May 2005
PACS:  78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))  
  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
  42.70.Qs (Photonic bandgap materials)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I5/01243
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QUAN Bao-Gang
LI Chao
SUI Qiang
LI Jun-Jie
LIU Wu-Ming
LI Fang
GU Chang-Zhi
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