The holographic foil is printed on the cover glass and filters ... These disadvantages arise mainly from the material silicon as well as from efficiency losses, which result e.g. through heat ...

Galaxy foil, pictured above ... Swirls are big with these cards, with many collectors valuing a swirl on the holographic material quite a bit. You can see one right above Azumarill's right ...

(Nanowerk News) Researchers from Missouri University of Science and Technology are demonstrating a new concept to reconstruct holographic images by using a single two-dimensional material monolayer ...