Chirality, as explained previously, is the inability of material or geometry to be superimposed on its mirror image. Chiral metamaterials are metamaterials with chiral geometry or arrangement. Due to their arrangement, they present different responses for different wave polarizations. A chiral metamaterial may provide a difference in transmission or reflection

Chirality is the object’s inability to be superimposed on its mirror image and therefore, chiral objects are not superimposable on their mirror image. On the other hand, achiral objects are those objects that “are” superimposable on their mirror images. These concepts of chiral and achiral objects can be better understood