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arXiv 0710.0812cond-mat.mtrl-scicond-mat.other
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开口环谐振器中的电磁激励

Magnetic and Electric Excitations in Split Ring Resonators

Jiangfeng Zhou, Thomas Koschny, Costas M. Soukoulis

摘要:

我们研究了U型谐振环的电磁共振特性。我们发现,高阶激发模式存在于两个电和磁共振。在所有的谐振模式的电流分布中的节点被发现。结果表明,磁共振是电流波的奇数个半波长模式,即1/2、3/2和5/2波长模式;电共振是电流波的整数个全波长模式,即1、2和3波长模式。我们讨论了电共振和磁共振的电矩和磁矩,以及它们与两个平行边臂长度的关系。我们表明,磁共振的磁矩消失的长度侧臂的SRR减少到零,即一个棒不给任何磁矩或磁共振。

英文摘要:

We studied the electric and magnetic resonance of U-shaped SRRs. We showed that higher order excitation modes exist in both of the electric and magnetic resonances. The nodes in the current distribution were found for all the resonance modes. It turns out that the magnetic resonances are the modes with odd-number of half-wavelength of the current wave, i.e. 1/2, 3/2 and 5/2 wavelengths modes, and the electric resonances are modes with integer number of whole-wavelength of current wave, i.e. 1, 2 and 3 wavelengths modes. We discussed the electric moment and magnetic moment of the electric and magnetic resonances, and their dependence to the length of two parallel side arms. We show that the magnetic moment of magnetic resonance vanishes as the length side arms of the SRR reduces to zero, i.e. a rod does not give any magnetic moment or magnetic resonance.

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