Patent
Information storage systems utilizing amorphous thin films
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TLDR
In this article, an amorphous semiconductor thin film which is switched between two stable states by applying a focused beam of laser energy was used to record data bits or images.Abstract:
The system disclosed herein employs an amorphous semiconductor thin film which is switched between two stable states by applying a focused beam of laser energy. In one state the thin film exhibits specular reflection while in the other state it exhibits diffuse reflection. Data bits or images are recorded by the laser beam on the thin film. This information is retrieved by illuminating the thin film with collimated light, by employing the same laser beam used to record the information, or by recording on a sensitized medium.read more
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