New high-precision measurements of the isotropic as well as of three directional Compton spectra of lithium hydride have been carried out using 2 4 ' A m as a y-ray source. In order to account for the extreme sensitivity of LiH powder to atmospheric moisture, the final data (i.e. the reciprocal form factor) were corrected for the LiOH content determined by titrimetric analysis. For the interpre...

Metamaterials are a new class of ordered composites that exhibit exceptional electromagnetic properties not readily observed in nature. In particular, artificial materials with both negative permittivity and permeability have attracted widespread interest in recent years. These composites are constructed from an array of metallic in dielectric and magnetic substrates and exhibit unusual electro...