Scatterings
Metamaterial Superlenses for the Visible and UV
A new design for metamaterial lenses allows the operating frequency to be scaled almost to the ultraviolet.
Plot of the magnetic field in a new superlens design. The colors indicate the magnetic field generated by surface plasmon polaritons; the black arrows show the direction of electrical current in metallic layers; and the numbers indicate current loops that contribute to negative refraction.
Durdu Guney
A new design for metamaterial lenses allows the operating frequency to be scaled almost to the ultraviolet. The work, by Muhammad I. Aslam and Durdu Guney at Michigan Technological University (U.S.A.), is an extension of previous studies that only reached the long-wavelength edge of the visible spectrum (Phys. Rev. B, doi: 10.1103/PhysRevB.84.195465). Visible or UV lenses made using these technologies would enable optical microscopes with resolutions down to 100 nm, below the diffraction limit.
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