NRAM

CONTENT INTRODUCTION WHY WE USE NRAM? PROPERTIES INTERNAL STRUCTURE STORAGE IN NRAM ADVANTAGES TO NRAM BENEFITS COMPETITIVE ADVANTAGES PROBLEM QUOTE..

INTRODUCTION- COMPANY RAM CARBON NANOTUBES

NRAM Nano-RAM is being developed by the Japan based company Nantero Dr. Thomas Rueckes, Nantero's Chief Technology Officer, uses carbon nanotubes as the active memory elements of NRAM Dr. Rueckes uses nanotubes great conductivity to create clusters of cells to form NRAM chips

The Company On the cutting-edge of nanotechnology Developing next-generation semiconductor devices Attempting to replace the traditional DRAM with NRAM Every day devices: computers, cell phones, PDAs, MP3 players, digital cameras, etc.

RAM Random Access Memory RAM is a form of computer data storage RAM is a volatile type memory RAM can also be used as a much faster Hard Drive

Carbon Nanotubes Carbon nanotubes are the strongest stiffest materials on earth Metallic nanotubes can have an electrical current density more than 1,000 times greater than metals such as silver and copper. Nanotube based transistors have been made that operate at room temperature and that are capable of digital switching using a single electron.

WHY WE USE NRAM?

Properties Members of the fullerene family One Carbon Atom Thick 100,000 times smaller than a human hair Conductor of Electricity comparable to Copper Stronger than Steel Hard as a Diamond

Nano-switch Between Nano-wires

Self-assembly

Thomas Rueckes, Nantero, 2000 Nanotube Random Access Memory Type of Memory Most Important Feature Applications DRAM High Density Computer Operating Memory SRAM Flash Memory High Speed Non-volatility Cell Phones, Computer Caches PDAs, Cameras MRAM All Uses NRAM Thomas Rueckes, Nantero, 2000

INTERNAL STRUCTURE

STORAGE IN NRAM NRAM works by balancing the on ridges of silicon. Under differing electric charges, the tubes can be physically swung into one or two positions representing one and zeros. Because the tubes are very small-under a thousands of time-this movement is very fast and needs very little power, and because the tubes are a thousand times conductive as copper it is very to sense to read back the data. Once in position the tubes stay there until a signal resets them.

Ribbon-up gives 'zero' and ribbon-down is 'one'. Applied charge make CNT ribbons bend down to touch the substrate or bend up back to its original state. Ribbon-up gives 'zero' and ribbon-down is 'one'.

Advantages to NRAM NRAM, unlike Flash RAM, can read/write with much less power. NRAM chips can be much smaller that todays DRAM chips NRAM can not be erased with magnets, radiation, even power failure will not corrupt data NRAM is non-volatile

Benefits Speed Storage Capacity Compatibility Energy Conserver Unaffected by Environmental Forces

Competitive Advantages Saves Money Saves Time Saves Energy

Problem The distance between the crossed wires has to be controlled fairly precisely: one to two nanometers Assemble and aligning a large number of these cross-wires. To make this pattern of nanotubes with precise control of distance is going to be the difficulty. Not yet a reliable way to produce separate sets of metallic and semiconducting nanotubes.

Quote NRAM is also unaffetced by strong magnetic fields and extreme temperature changes like hot and cold. add the fact that they are 100 times stronger than steel and much more conductive than copper, nanotubes are an interesting way of producing the specified results. NRAM is a wonderfull thing in theory, now all that is let is to wait and see. It has more advantages over problems

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