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Multilayered structures consisting of alternating negative-permittivity anddielectric layers are explored to obtain high-resolution imaging ofsubwavelength objects. The peaks with the smallest |ky| (ky is the transversewave vector) on the transmission curves, which come from the guided modes ofthe multilayered structures, can not be completely damped by material loss.This makes the amplitudes of the evanescent waves around these peaksinappropriate after transmitted through the imaging structures, and the imagingquality is not good. To solve such a problem, the permittivity of thedielectric layers is appropriately chosen to make these sharp peaks merge withtheir neighboring peaks. Wide flat upheavals are then generated on thetransmission curves so that evanescent waves in a large range are transmittedthrough the structures with appropriate amplitudes. In addition, it is foundthat the sharp peaks with the smallest |ky| can be eliminated by addingappropriate coating layers and wide flat upheavals can also be obtained.

High-subwavelength-resolution imaging of multilayered structures  consisting of alternating negative-permittivty and dielectric layers with  flattened transmission curves