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Memory Cells Built on Paper

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An RRAM cell printed on paper.

A team at the National Taiwan University say they have printed resistive random access memory cells on paper.

Credit: Der-Hsien Lien et al.

A team at the National Taiwan University in Taipei has printed small resistive random access memory cells on paper, which they say is a first for nonvolatile memory devices. The approach employed a combination of inkjet and screen printing.

Basic circuit components previously have been printed on paper, but memory is one of the last frontiers. Memory will be needed if paper electronics are to perform computations and store data, notes graduate student Der-Hsien Lien. He says the memory cells were as small as 50 micrometers, indicating they could potentially be packed together to store about 1,000 bits per centimeter, which amounts to 1 MB on a single side of a sheet of standard A4 paper.

Still, the research team thinks better inkjet printers could increase memory capacity to 1 GB, and capacity could expand further by building memory cells at the intersections of crossed lines, an approach called crossbar memory.

The researchers now are looking for a partner to build electronics for storing and reading information in memory cells.

From IEEE Spectrum
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