Information storage in piezoelectric powders

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Abstract
In this paper we show that a large amount of information can be stored in a sample of piezoelectric powders. The technique used to write and read the information is based on the principle of phonon echos. It is demonstrated that the frequency can serve as an address of a memory and that a word can be written into each address by selecting an appropriate writing pulse sequence. It is also shown that the information contained in one address can be read out quickly and nondestructively.

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