Directed subwavelength imaging using a layered metal-dielectric system
By B. Wood, John B. Pendry, Din Ping Tsai. 2006
549 citations recorded by the source corpus.
We examine some of the optical properties of a metamaterial consisting of thin layers of alternating metal and dielectric. We can model this material as a homogeneous effective medium with anisotropic dielectric permittivity. When the components of this permittivity have different signs, the behavior of the system becomes very interesting: the normally evanescent parts of a P-polarized incident field are now transmitted, and there is a preferred direction of propagation. We show that a slab of this material can form an image with sub-wavelength details, at a position which depends on the frequency of light used. The quality of the image is affected by absorption and by the finite width of the layers; we go beyond the effective medium approximation to predict how thin the layers need to be in order to obtain subwavelength resolution.
Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/964ed6c988bcf8da4ae992233f1d10a6e95825e2
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In Atomic and Molecular Physics, and Optics
In Biomedical Engineering
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- On electromagnetic characterization and homogenization of nanostructured metamaterials (2010, background): “Another (tangential) component was either close to zero (in [95]) or close to unity (in [96]).”