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Graphene May Give Processors A Boost
Researchers at MIT have figured out that graphene, sheets of atom-thick carbon, could be used to make chips a million times faster.
The researchers have worked out that slowing the speed of light to the extent that it moves slower than flowing electrons can create an “optical boom”, the optical equivalent of a sonic boom.
Slowing the speed of light is no mean feat, but the clever folks at MIT managed it by using the honeycomb shape of carbon to slow photons to slow photons to several hundredths of their normal speed in a free space, explained researcher Ido Kaminer.
Meanwhile, the characteristics of graphene speed up electrons to a million metres a second, or around 1/300 of the speed of light in a vacuum.
The optical boom is caused when the electrons passing though the graphene reach the speed of light, effectively breaking its barrier in the carbon honeycomb and causing a shockwave of light.
As electrons move faster than the trapped light, they bleed plasmons, a form of virtual particle that represents the oscillation of electrons on the graphene’s surface.
Effectively, it is the equivalent of turning electricity into light. This is nothing new – Thomas Edison did it a century ago with fluorescent tubes – but it can efficiently and controllably generate plasmons at a scale that works with microchip technology.
The discovery could allow chip components to be made from graphene to enable the creation of light-based circuits. These circuits could be the next step in the evolution of chip and computing technology, as the transfer of data through light is far faster than using electrons in today’s chips, even the fast pixel-pushing ones.
So much faster that it’s “six orders of magnitude higher than what is used in electronics”, according to Kaminer. That’s up to a million times faster in plain English.
“There’s a lot of excitement about graphene because it could be easily integrated with other electronics,” said physics professor Marin Soljačić, a researcher on the project, who is confident that MIT can turn this theoretical experiment into a working system. “I have confidence that it should be doable within one to two years.”
This is a pretty big concept and almost sci-fi stuff, but we’re always keen to see smaller and faster chips. It also shows that the future tech envisioned by the world of sci-fi may not be that far away.
Courtesy-TheInq
Marvell’s Future Brightens
Marvell reported a more-than-expected 112 percent rise in profit, helped by strong demand from storage and networking companies, and said it expected its mobile business to pick up in the current quarter.
Marvell forecast first-quarter revenue between $870 and $910 million, which is above what the cocaine nose jobs of Wall Street predicted. Chief Executive Sehat Sutardja said that in his company’s first quarter, he was expecting some revenue and unit growth for our 4G LTE mobile platform from multiple customers. Marvell said results were not so hot in the mobile business in the fourth quarter as some customers delayed product launches.
The company, which also makes communications and processor products used in mobile phones, said net income doubled to $106.6 million, or 21 cents per share, in the quarter ended February 1 from $50.2 million, or 9 cents per share, a year earlier.
Revenue rose to $931.7 million, beating analysts’ estimate of $901.1 million.
Marvell’s biggest customer is Western Digital which reported better-than-expected quarterly results in January, citing strength in its gaming and notebook business.
Marvell Loses In Court
A federal judge denied Marvell’s request to declare a mistrial in a patent infringement case in which a jury awarded $1.17 billion in damages to Carnegie Mellon University.
Carnegie Mellon sued Marvell in March 2009 over patents issued in 2001 and 2002 related to how accurately hard disk-drive circuits read data from high-speed magnetic disks. The suit involved nine Marvell circuits which incorporated the patents, and that the infringement let the Bermuda outfit blog billions of chips with its tech on board.
The damages award in December 2012 was one of the largest by a US jury in a patent infringement case. Marvell asked the judge to declare a mistrial and it claimed that Carnegie Mellon’s lawyer made improper, misleading and prejudicial comments during closing arguments that “inflamed” the jury.
US District Judge Nora Barry Fischer in Pittsburgh federal court disagreed and said that Marvell was trying to do what it could not do at trial convince the court to throw out this case and have another crack at it. Marvel has said that it will appeal so this case will run and run.
Marvell Outs New WiFi Chip
Marvell has shed some light on its new Avastar 88W8897 802.11ac low power WiFi chip. In addition to up to 867Mbps of WiFi transfer throughput, the new chip also integrates Bluetooth 4.0, near field communications (NFC) as well as Wi-Fi certified Miracast and integrated location engine. Aimed at notebooks, ultrabooks, tablets, gaming consoles and smart TVs, the new Avastar 88W8897 is expected to show up in various devices around this time next year.
The implementation of 802.11ac standard and Bluetooth 4.0 in the same chip is not something that we have not seen so far, but with NFC, it is certainly becomes a quite interesting chip. As noted, the new Avastar 88W8897 will feature 867Mbps of transfer throughput which is not as fast as we are other chip manufacturers but still faster than 802.11n. Marvell reckons that 802.11ac is still young but should become a big thing as of next year.
Marvell also claims that the Avastar 88W8897 SoC offers the highest level of integration available enabling a rest of bill of materials footprint reduction of 40 to 50 percent and cost reduction of 75 percent when combined to previous wireless solutions. The Wi-Fi certified Miracast, expected to be certified later this year, 802.11ac transfer speeds and Marvell’s dynamic rapid channel switching (DRCS) technology will allow users to stream video from a smaller device like tablet to a larger display while simultaneously surfing the net without losing the connection in 2.4GHz. The last, but not least, is the integrated location engine that enables accurate indoor positioning by implementing 802.11v time of flight protocol inside the hardware.