Optics Express

Volume 1, Page 709-15


Near Field Imaging with Magnetic Wires

MCK Wiltshire, JV Hajnal, JB Pendry and DJ Edwards


We report on the development and use of a highly anisotropic magnetic metamaterial for near-field imaging.  The material consists of an array of Swiss Roll structures, resonant near 21.3 MHz with a peak value of relative permeability ~35.  At this peak, the material transfers an input magnetic field pattern to the output face without loss of intensity and with a spatial resolution equal to the roll diameter.  It behaves as a near-field imaging device consisting of a bundle of magnetic wires.


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