| Super energy flows in a waveguide filled with air and left-handed materials |
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| 作者姓名： | 余观夏 崔铁军 |
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| 作者单位： | Center for Computational Electromagnetics and
the
State Key Laboratory of Millimeter Waves,\Department of Radio Engineering, Southeast University,
Nanjing 210096, China\;College of Information Science and Technology, Nanjing
Forestry University, Nan;Center for Computational Electromagnetics and
the
State Key Laboratory of Millimeter Waves,\Department of Radio Engineering, Southeast University,
Nanjing 210096, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant Nos 60671015, 60225001
and 60621002), The State Key Development Program for Basic Research
of China (Grant No 2004CB719802), and the Doctorate Found of State
Education Commissio |
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| 摘 要： | The phenomena of super energy flows are studied theoretically and numerically in a parallel-plate waveguide which is filled with two layered equally-thick different media, i.e. air and specific left-handed materials （LHM） with εr1 = -1/（1 ＋δ） ＋iγ and μr1 = -（1 ＋ δ） ＋ iγ. In this special waveguide, two-directional super-energy flows are excited by a three-dimensional horizontal electric dipole at the same time, which has transmission patterns different from those of two-dimensional source and three-dimensional vertical electric dipole. We also show that the retardation and loss in LHM are sensitive to the amplitude of super power densities, and the dimensions of waveguide determine the propagating modes, which makes super energy flows more practical.
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| 关 键 词： | 超能量流 左手材料 波导 空气 |
| 收稿时间： | 2007-04-24 |
| 修稿时间： | 2007-07-11 |
Super energy flows in a waveguide filled with air and left-handed materials |
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| Yu Guan-Xia and Cui Tie-Jun.Super energy flows in a waveguide filled with air and left-handed materials[J].Chinese Physics B,2008,17(1):164-169. |
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| Authors: | Yu Guan-Xia and Cui Tie-Jun |
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| Institution: | Center for Computational Electromagnetics and
the
State Key Laboratory of Millimeter Waves,\Department of Radio Engineering, Southeast University,
Nanjing 210096, China; Center for Computational Electromagnetics and
the
State Key Laboratory of Millimeter Waves,\Department of Radio Engineering, Southeast University,
Nanjing 210096, China\;College of Information Science and Technology, Nanjing
Forestry University, Nan |
| |
| Abstract: | The phenomena of super energy flows are studied theoretically and
numerically in a parallel-plate waveguide which is filled with two
layered equally-thick different media, i.e. air and specific
left-handed materials (LHM) with $\epsilon_{{\rm
r}1}=-1/(1+\delta)+\i\gamma$ and $\mu_{{\rm
r}1}=-(1+\delta)+\i\gamma$. In this special waveguide,
two-directional super-energy flows are excited by a three-dimensional
horizontal electric dipole at the same time, which has transmission
patterns different from those of two-dimensional source and
three-dimensional vertical electric dipole. We also show that the
retardation and loss in LHM are sensitive to the amplitude of super
power densities, and the dimensions of waveguide determine the
propagating modes, which makes super energy flows more practical. |
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| Keywords: | super energy flows left-handed
materials |
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