HP Records New Breakthrough in Memristor Development

By Chris Preimesberger  |  Posted 2011-05-16 Print this article Print

Scientists report that they have figured out the chemistry of what actually happens inside a memristor while it is being deployed. Up to now it had been mostly a mystery.

Hewlett-Packard Labs research scientists on May 16 reported a new breakthrough in their continuing development of memristors-next-generation memory that some industry people see as an eventual replacement for NAND flash and DRAM storage.

A memristor, basically a resistor with memory, apparently has more capabilities than anybody expected. HP Labs has previously reported discovering that a memristor can perform logic, potentially enabling computation to be performed in chips where data is stored. This could mean a radical change in the way future IT is designed and built.

HP scientists reported in the May 16 edition of the journal "Nanotechnology" that they have figured out the chemistry of what actually happens inside a memristor while it is being deployed. Up until now this had been mostly a mystery.

Although HP is confident it will eventually commercialize memristors, this discovery is important because it will enable HP to greatly improve its performance, Senior Fellow Stan Williams wrote in the article.

"We were on a path where we would have had something that works reasonably well, but this improves our confidence and should allow us to improve the devices such that they are significantly better," Williams wrote.

The Fourth Basic Circuit Element

The memristor-short for memory resistor-is viewed by HP engineers as the fourth basic circuit element in chip engineering, up there with the resistor, capacitor and inductor.

At the Flash Memory Summit in Santa Clara, Calif., in August 2009, Williams described the memristor this way: "This is sort of the missing element of the processor puzzle. It takes its place alongside the resistor, capacitor and inductor [as the fourth basic circuit element in chip engineering]. And it could change the way we do IT."

In summary, let's just say adding a memristor to a solid-state NAND flash drive can be like putting it on steroids.

Since flash media already owns the fastest I/O speeds known to IT science, increasing that speed tenfold or by a higher magnitude-HP's conservative estimate at this time-is certainly an intriguing proposition for processor engineers and IT systems makers.

The idea behind the memristor was first publicized in 1971 by Prof. Leon Chua at the University of California, Berkeley. HP researchers first showed the memristor's existence in practice.

Two years later, Nature magazine published HP's finding that the memristor exists, and in 2009, engineers at HP Labs showed that memristors could be stacked, suggesting that a chip could offer four to eight times the memory capacity of traditional technologies.

In April 2010, HP officials said its researchers had found that the memristor also could perform digital logic, setting the stage for the creation of a memristor product that could act as both a computing chip and a storage technology, taking the place of traditional storage technologies-including flash and hard drives-and even CPUs.

Chris Preimesberger Chris Preimesberger was named Editor-in-Chief of Features & Analysis at eWEEK in November 2011. Previously he served eWEEK as Senior Writer, covering a range of IT sectors that include data center systems, cloud computing, storage, virtualization, green IT, e-discovery and IT governance. His blog, Storage Station, is considered a go-to information source. Chris won a national Folio Award for magazine writing in November 2011 for a cover story on Salesforce.com and CEO-founder Marc Benioff, and he has served as a judge for the SIIA Codie Awards since 2005. In previous IT journalism, Chris was a founding editor of both IT Manager's Journal and DevX.com and was managing editor of Software Development magazine. His diverse resume also includes: sportswriter for the Los Angeles Daily News, covering NCAA and NBA basketball, television critic for the Palo Alto Times Tribune, and Sports Information Director at Stanford University. He has served as a correspondent for The Associated Press, covering Stanford and NCAA tournament basketball, since 1983. He has covered a number of major events, including the 1984 Democratic National Convention, a Presidential press conference at the White House in 1993, the Emmy Awards (three times), two Rose Bowls, the Fiesta Bowl, several NCAA men's and women's basketball tournaments, a Formula One Grand Prix auto race, a heavyweight boxing championship bout (Ali vs. Spinks, 1978), and the 1985 Super Bowl. A 1975 graduate of Pepperdine University in Malibu, Calif., Chris has won more than a dozen regional and national awards for his work. He and his wife, Rebecca, have four children and reside in Redwood City, Calif.Follow on Twitter: editingwhiz

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