NRAM working explanation

Based on the excellent properties of carbon nanotube, a start up company, called Nantero, invented a novel high performance carbon nanotube based memory, called, NRAM. This figure illustrates the structure of NRAM. Similar as traditional memory, it is a two dimensional array of cells and each cell stores one bit data. As for one cell, it is composed of a bundle of nanotubes, the metal support and electrode. The suspended nanotubes are mechanically bent or not determines the on/off states of the cell. As shown in this figure, when the nanotube is bent to the electrode, the resistance between the electrode and the nanotube is reduced. This is the “on” state. In contrast to it, the other is the “off” state. After the bits are written into the NRAM, it can be retained by itself without voltage supply, hence it is non-volatile. NRAM can be fabricated using fully CMOS-compatible manufacturing processes. A 10 Gbit sample chip has been fabricated and it will be ready soon for the market. ................
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NRAM FEATURES AND ADVANTAGES
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*Non-volatile nanotube random-access memory (NRAM)
*Mechanically bent or not: determines bistable on/off states
*Fully CMOS-compatible manufacturing process
*Prototype chip: 10 Gbit NRAM
*Will be ready for the market in the near future
Properties of NRAMs
*Non-volatile
*Similar speed to SRAM
*Similar density to DRAM
*Chemically and mechanically stable
NATURE not tied to NRAMs
*Phase change RAM
*Magnetoresistive RAM
*Ferroelectric RAM