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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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3D optical data storage
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3D optical data storage is any form of optical data storage in which information can be recorded or read with three-dimensional resolution.
Examples of 3D optical data storage media. Top row – written Call/Recall media; Mempile media. Middle row – FMD; D-Data DMD and drive. Bottom row – Landauer media; Microholas media in action.
Examples of 3D optical data storage media. Top row – written Call/Recall media; Mempile media. Middle row – FMD; D-Data DMD and drive. Bottom row – La
Photochromism
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Photochromism is the reversible change of color upon exposure to light. It is a transformation of a chemical species between two forms through the absorption of electromagnetic radiation, where each f
3D optical data storage
…to the two-dimensional resolution afforded, for example, by CD). The origins of the field date back to the 1950s, when Yehuda Hirshberg developed the photochromic spiropyrans and suggested their use in data storage. In the 1970s, Valerii Barachevskii demonstrated that this photochromism could be produced by…
A photochromic eyeglass lens, after exposure to sunlight while part of the lens remained covered by paper.
A photochromic eyeglass lens, after exposure to sunlight while part of the lens remained covered by paper.