Similar techniques can provide the dimensions of small structures repeated in large periodic arrays like a diffraction grating.

In the same paper, he showed that a periodic array of wires and ring could give rise to a negative refractive index.

For example, an effect such as negative permeability is produced with a periodic array of split ring resonators.

It is constructed into a periodic array with a large number of SRRs.

However, the inclusion of a periodic array of conducting elements is preferred.

This comprised a periodic array of lenses displaced longitudinally where in theory the light beam was focused periodically.

More molecules (metals and ligands) can self-assemble onto the growing crystal in a periodic array.

Complementary negative permittivity is achieved using a single periodic array of copper wires.

A crystal is any periodic array of atoms.

Such a periodic array has the property of translational invariance, for obvious reasons.