A double plate with chiral structures based on
three segment cranks is analysed for normal incidence and
lineal polarization. Each structure is made with four three
segment crank arranging a rectangular parallelepiped. These
structures are distributed in a periodic configuration in each
sheet, being the respective unit cells perfectly lined up. The
response depends on spacing between plates. Interesting results
are obtained for small spacing: the chiral behaviour depends
on the spacing then the double sheet system can be used as
tunable rotator.Ingeniería, Industria y Construcció
