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arXiv 1406.7044math.AP
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反常局域共振现象对耗散的敏感性

Sensitivity of anomalous localized resonance phenomena with respect to dissipation

Taoufik Meklachi, Graeme W. Milton, Daniel Onofrei, Andrew E. Thaler, Gregory FUnchess

摘要:

我们分析了隐形由于异常局域共振的情况下,当一般的电荷密度分布带来的平板超透镜附近的准静态制度。如果电荷密度分布在板的临界距离内,则板内的功率耗散随着某些电耗散参数变为零而急剧增加。在这个极限下,电势在远离板的地方仍然有界,这导致了由于异常局域共振而导致的隐形。另一方面,如果电荷密度分布比该临界距离板更远,则板内的功率耗散保持有界,并且不会发生由于异常局部谐振而引起的隐身。临界距离强烈依赖于板外耗散趋于零的速率。

英文摘要:

We analyze cloaking due to anomalous localized resonance in the quasistatic regime in the case when a general charge density distribution is brought near a slab superlens. If the charge density distribution is within a critical distance of the slab, then the power dissipation within the slab blows up as certain electrical dissipation parameters go to zero. The potential remains bounded far away from the slab in this limit, which leads to cloaking due to anomalous localized resonance. On the other hand, if the charge density distribution is further than this critical distance from the slab, then the power dissipation within the slab remains bounded and cloaking due to anomalous localized resonance does not occur. The critical distance is shown to strongly depend on the the rate at which the dissipation outside of the slab goes to zero.

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