The new nanotechnology allows to store bits: ready for commercializationPublished on 2011/1/4 (2403 reads)
New research brings closer a new type of computer memory that would combine the capacity of a magnetic hard disk with the speed, size, and ruggedness of flash memory.
The new work also helps explain a mystery that surrounded the basic physics of the racetrack memory—whether the bits act like particles with mass, accelerating and decelerating, when moved by electric current. "To further develop racetrack memory, we need to understand the physics that makes it possible," says Parkin.
In racetrack memory, bits of information are represented by tiny magnetized sections called domain walls along the length of a nanowire. These domain walls can be pushed around—to flip a bit from "0" to "1" or vice versa—when electrical current is applied. Unlike current storage technology, racetrack memory has the potential to store bits in three dimensions, if the nanowires are embedded vertically into a silicon chip. The stored information is read magnetically.
In 2008, the journal Science published a paper coauthored by Parkin that showed how multiple domain walls can traverse the length of a nanowire without being destroyed. The new work, also published in Science, specifies the velocity and acceleration of domain walls as they make their way along a nanowire when an electrical current is applied.
"There's been debate among theorists about how domain walls will respond," says Parkin. Researchers understood the motion of domain walls when they were exposed to magnetic fields, but they still had questions about how domain walls move in response to an electrical current—a crucial point because an actual memory device would use electrical current to manipulate bits. One important question was whether domain walls would behave like particles with mass, taking time to speed up and slow down.
The new research shows that they do. It took about 10 nanoseconds, and a distance of a micron, for a domain wall to reach its final velocity, about 140 meters per second. It took another 10 nanoseconds, and one micron, for the domain wall to slow to a stop after the current was turned off. Thus domain walls do indeed behave like particles with mass, and move in a predictable way.
"It is extremely important to account for these effects in clocking schemes of racetrack memory," says Shan Wang, professor of materials science and engineering and electrical engineering at Stanford, referring to the algorithms that would control the reading and writing of bits in a racetrack memory device. "Otherwise, domain walls ... would be written in wrong locations of the nanowire."
However, Wang says a practical racetrack memory device remains some way off. "This paper only shows the exquisite shifting of bits, but it is not a memory device yet."
Still to be determined, for instance, says Peter Fischer, a staff scientist at Lawrence Berkeley National Labs, is "how clean and perfect the device needs to be to work billions of times."
Parkin says racetrack memory's reliability is likely to depend on the materials used for the nanowires, and the design—which will be worked out as a prototype is developed. "It shouldn't take too long," Parkin says. "Maybe in two years we should have this prototype."
Published on 2013/9/15
La Regione Puglia, protagonista nel ruolo di padrona di casa alla quinta edizione barese di Smau, l'evento più importante del settore ICT, ha presentato l'ecosistema innovazione del territorio.(Read All)
Published on 2013/9/1
Promotion of farms is closely linked to the situation of the territory. The most susceptible areas are multi-sector areas. Organic olive oil production in Italy has always represented a vital area with great historical and agricultural value. Organic olive farms are currently opening towards an eco-sustainable and multi-sector approach. Sustainability in olive tree cropping involves the adoption of integrated and organic farming strategies according to the farmers’ background and territory.
The organic olive oil gains added value from additional certifications (DOP, IGP) as well as from the choice of new promotional and marketing strategies.
Published on 2012/10/24
Il seminario “Il Seed Capital: regole e funzionamento”, in programma il 25 settembre a Foggia, organizzato dall'ARTI, è finalizzato al trasferimento di know-how operativo attraverso la presentazione e la discussione delle “regole del gioco”, dei meccanismi operativi che ne regolano l’applicazione, delle principali categorie di “attori” e di una selezione di casi concreti.(Read All)
Published on 2011/10/25
Ventiquattro finalisti da tutta Europa, suddivisi in 12 start-up innovative e 12 realtà territoriali al servizio dello sviluppo tecnologico (incubatori, tecnopoli e BIC), a contendersi 6 premi finali. Sono i numeri della seconda edizione del DigiBIC Award - che si è svolta a Tolone, dal 15 al 17 giugno 2011 -, nell'ambito del convegno annuale del network europeo dei Business Innovation Centre (European BIC Network). A vincere la competizione nella categoria "Creative Marketing, breaking the rules fast" è stata Media Haka, una Start Up Italo-Catalana che si occupa di scienza delle reti e media digitali.(Read All)
Published on 2011/6/16
Creativi, ispirativi e smart. Così EBN (European BIC Network), la rete che raccoglie gli attori territoriali dell'innovazione in Europa, vuole che siano i nuovi imprenditori hi-tech, ai quali è offerto il palcoscenico del Ventesimo Convegno Annuale del network (a Tolone dal 15 al 17 giugno 2011) per presentare i casi di successo, elaborare partnership e strategie. Tra i finalisti anche Media Haka, una Start-up italo-catalana, gazzella di Tecnopolis (Parco Tecnologico della Puglia).
Published on 2011/6/12
In occasione di Ten10, la maratona Cyberpunk in programma a Roma il 9 ottobre 2010, il collettivo Hypermedia Punk ha presentato in anteprima "Hallucinated Journalism" una performance che mette in scena un dialogo tra "L’Artista" e il "Giornalista" in una dimensione spazio-temporale di cui si sono perse le coordinate.
Published on 2011/6/12
L'intervista di Apulia Innovation Equipe a Michel Maffesoli durante il Public Camp 2010 al Festival dell'Innovazione di Bari (1-2-3 Dic 2010).
Media Haka towards "transmediale.11", the International Festival of Art and Digital Culture of Berlin
Published on 2011/1/21
In the Haus der Kulturen der Welt - Berlin will take place, from 1 to 6 of February, one of the international festivals more sensible to the radical changes that distinguish the digital era: Transmediale.11. Media Haka will follow the berliner happening with the accustomed non conventional reportage traced and cast in real time on the platforms Apulia Innovation, Italian Innovation (already in Transmediale 2010) and Sardinia Innovation and on the major social networks.