1 You have signs of infection, such as: 2  Increased pain, swelling, warmth, or redness around the bite. 3  Red streaks leading from the bite. 4  Pus draining from the bite.  A fever.
A negative index of refraction due to three-dimensional chirality is demonstrated for abilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which alsoshows negative electric and magnetic responses and exceptionally strong optical activity and circular dichro-ism.
VI. SUMMARY In summary we have realized a class of 3D-chiralmetamaterials with very versatile properties including nega-tive index of refraction due to chirality, negative permeabil-ity, negative permittivity, giant optical activity, and verylarge circular dichroism.