Tellurium-based rewritable DVDs. Digital versatile discs (DVDs) are examples of optical discs. An optical disc digitally stores data (such as music or
Tellurium-based rewritable DVDs. Digital versatile discs (DVDs) are examples of optical discs. An optical disc digitally stores data (such as music or video) as tiny depressions in a plastic disc. This disc is coated with a fine film of metal and then by another layer of plastic. The information is read by a laser light that reflects from the metal layer, allowing the original data to be reconstructed. Rewritable DVDs (DVD-RW) can be erased and rewritten, typically due to the use of a phase change metal alloy such as germanium-antimony-tellurium (GST). This material, incorporating three metalloid elements, can be altered using a laser beam.
Size: 3417px × 5126px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: -life, alloy, alloys, antimony, application, applications, chemical, chemistry, close-, colours, data, detail, device, digital, disc, discs, dvd, dvd-rw, dvd-rws, element, equipment, film, ge, germanium, gst, information, iridescence, iridescent, life, light, manufactured, metal, metallic, metalloid, metalloids, metals, music, object, optical, plastic, produced, reflected, rewritable, sb, shot, storage, studio, te, technological, technology, tellurium, versatile, video
