Download original image
(a) Equivalent refractive index, nf, for a fishnet metamaterial made of four plates. Vertical and horizontal black dashed lines correspond to the working frequency f0 = 99 GHz and hole diameter a = 0.54 respectively. Parameter definition of fishnet metamaterial unit cell (Inset); (b) Transmission coefficient S21 for a four-plate fishnet metamaterial; (c) Fabricated WZP fishnet metamaterial lens and its seven Fresnel zones.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.