Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Subwavelength imaging by a left-handed material superlens   In this work, finite-difference time-domain (FDTD) method is employed to
justify the superlensing effect of left-handed material (LHM) slabs. Our
results demonstrate that subwavelength resolution can be achieved by realistic
LHM slabs with finite absorption and dimension. We present the dynamic feature
of the imaging process and the dependence of physical parameters on the
performance of the superlens. These results help to clarify the diversed FDTD
results reported previously. We also show that the achievable resolution is
limited by the absorption and thickness of the LHM slabs, which introduces
difficulties in practical applications of the superlens.

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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math