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Recent News and Articles on the Keywords: move over + over silicon + silicon  Related to the article below (Last Update: 5/13/2008)

Let's talk taxes
Los Angeles Times, CA -
With so much worth protecting and so much that threatens our economic well-being, it is far past time to move beyond simply patching over budget problems to ...
Powerset Launches Semantic Search Tools for Wikipedia
RedOrbit, TX -
The company licensed natural language processing technology and related machine processing methods developed over 30 years at Silicon Valley?s Xerox PARC ...

BBC News
Frigid robot eyes top tech prize
BBC News, UK -
The other finalists are the first commercially available bionic hand, an advanced filter to remove soot from diesel engines and a tiny silicon sensor which ...
MathStar, Inc. Q1 2008 Earnings Call Transcript
Seeking Alpha, NY - May 11, 2008
As a result, we expect these customers will drive additional forward silicon and IP revenue for MathStar in 2008. Turning to Q1 revenue, we are reporting ...MATH

BBC News
The healing power of computers
BBC News, UK -
Silicon may be cheap, but turning it into processors requires vast amounts of energy, clean water and many potentially toxic chemicals. ...
Janitors Reach Tentative Agreement on Wages, Benefits, Four-Year ...
Business Wire (press release), CA -
The janitors? union SEIU Local 1877 represents 20000 janitors from San Diego to the Silicon Valley and all the way up to Sacramento; all are currently in ...MPG
New Cornish & Carey exec moves on after he couldn't move up at CBRE
Bizjournals.com, NC - May 9, 2008
... move to C&C over a golf game some six months ago. Doyle, who was with CBRE for more than four years, oversaw its institutional sales team in Silicon ...
Canadian Solar Appoints New Chief Financial Officer
CNNMoney.com (press release) -
Mr. Zhu said, "It has been my pleasure to serve as the Chief Financial Officer of Canadian Solar over the past three years. While I have decided to move on ...CSIQ

TechJournal South
New material combines effects of semiconductors and metals
TechJournal South, NC -
Because graphene is only one atom thick, current samples must sit on a substrate, in this case silicon dioxide. Trapped electrical charges in the silicon ...
Freescale to close Tempe chip foundry
Arizona Republic, AZ -
The amplifier chips, made of gallium arsenide instead of silicon, were the principal product produced at the Tempe facility. Gallium arsenide is a compound ...
Source: Google News

Epitaxy on surfaces vicinal to Si (001). I. Diffusion of silicon adatoms over the terraces -
C Roland, GH Gilmer - Physical Review B, 1992 - APS
... In this paper, we present results on the diffusion of silicon adatoms over the flat
Si ... have two dangling bonds costing about 1 eV apiece, move to- wards ...

… of near-interface defects in hydrogenated amorphous silicon-silicon nitride heterojunctions: The … -
WB Jackson, MD Moyer - Physical Review B, 1987 - APS
... The holes must move readily in the nitride, a re ... midgap or lower in the amorphous
silicon near enough ... trapping of the electrons can dominate over near-interface ...

?Brownian strings?: Segmenting images withstochastically deformable contours -
RP Grzeszczuk, DN Levin, SGC Syst, M View - Pattern Analysis and Machine Intelligence, IEEE Transactions …, 1997 - ieeexplore.ieee.org
... RP Grzeszczuk is with Silicon Graphics, Inc ... the global minimum of the energy function
over the state ... of local perturbations, selected by the move generator. ...

Anodic dissolution of silicon in hydrofluoric acid solutions -
R Memming, G Schwandt - Surface Science, 1966 - Elsevier
... applied across the inter face, holes move towards the ... that the overvoltage is completely
taken over by the space ANODIC DISSOLUTION OF SILICON 121 charge ...

Development of a Silicon-based Nanoprobe System for 3-D Measurements -
H Haitjema, WO Pril, PHJ Schellekens - CIRP Annals-Manufacturing Technology, 2001 - Elsevier
... Keywords: CMM-probe, silicon, MEMS ... Additionally, when the tip is not on the z-axis,
it will move over a small predictable distance in x- or y- direction when ...

Performance optimizations, implementation, and verification of theSGI Challenge multiprocessor -
M Galles, E Williams, SGC Syst, M View - System Sciences, 1994. Vol. I: Architecture, Proceedings of …, 1994 - ieeexplore.ieee.org
... 1 Introduction The Silicon Graphics Challenge line of symmetric ... 2 bus favors read
re- quests over other requests ... to be cleaned as they move between processor ...

[PS] Atomistic models of vacancy-mediated diffusion in silicon -
ST Dunham - Journal of Applied Physics, 1995 - dunham.ee.washington.edu
... Due to the silicon lattice structure, the vacancy must move ... primarily just exchange
places over and over, with no ... rate is how often vacancies move from third ...
-

The segregation and oxidation of silicon on Pt (111), OR: The question of the ?platinum oxide? -
HP Bonzel, AM Franken, G Pirug - Surface Science, 1981 - Elsevier
... 8] led to the dis covery that, for example, carbon, sulfur and silicon could readily ...
be viewed as a process where the Si atoms do not move over large dis tances ...

[BOOK] Regional Advantage: Culture and Competition in Silicon Valley and Route 128 -
AL Saxenian - 1994 - books.google.com
... the exodus of engineers from the technology region around Route 128 in Massachusetts
to its West Coast counterpart, Silicon Valley. Kalb's move reflected more ...

Selectivity for etching an oxide over a nitride -
US Patent 5,423,945, 1995 - freepatentsonline.com
... including ions, electrons, free radicals and excited neutrals, move toward the ... the
like to optimize the selectivity of silicon oxide over silicon nitride on a ...

Source: Google Scholar

Move over, silicon: Advances pave way for powerful carbon-based electronics

Practical technique shows promise of carbon material called graphene

Bypassing decades-old conventions in making computer chips, Princeton engineers developed a novel way to replace silicon with carbon on large surfaces, clearing the way for new generations of faster, more powerful cell phones, computers and other electronics.

The electronics industry has pushed the capabilities of silicon -- the material at the heart of all computer chips -- to its limit, and one intriguing replacement has been carbon, said Stephen Chou, professor of electrical engineering. A material called graphene -- a single layer of carbon atoms arranged in a honeycomb lattice -- could allow electronics to process information and produce radio transmissions 10 times better than silicon-based devices.

Until now, however, switching from silicon to carbon has not been possible because technologists believed they needed graphene material in the same form as the silicon used to make chips: a single crystal of material eight or 12-inches wide. The largest single-crystal graphene sheets made to date have been no wider than a couple millimeters, not big enough for a single chip. Chou and researchers in his lab realized that a big graphene wafer is not necessary, as long they could place small crystals of graphene only in the active areas of the chip. They developed a novel method to achieve this goal and demonstrated it by making high-performance working graphene transistors.

“Our approach is to completely abandon the classical methods that industry has been using for silicon integrated circuits,” Chou said.

Chou, along with graduate student Xiaogan Liang and materials engineer Zengli Fu, published their findings in the December 2007 issue of Nano Letters, a leading journal in the field. The research was funded in part by the Office of Naval Research.

In their new method, the researchers make a special stamp consisting of an array of tiny flat-topped pillars, each one-tenth of a millimeter wide. They press the pillars against a block of graphite (pure carbon), cutting thin carbon sheets, which stick to the pillars. The stamp is then removed, peeling away a few atomic layers of graphene. Finally, the stamp is aligned with and pressed against a larger wafer, leaving the patches of graphene precisely where transistors will be built.

The technique is like printing, Chou said. By repeating the process and using variously shaped stamps (the researchers also made strips instead of round pillars), all the active areas for transistors are covered with single crystals of graphene.

“Previously, scientists have been able to peel graphene sheets from graphite blocks, but they had no control over the size and location of the pieces when placing them on a surface,” Chou said.

One innovation that made the technique possible was to coat the stamp with a special material that sticks to carbon when it is cold and releases when it is warm, allowing the same stamp to pick up and release the graphene.

Chou’s lab took the next step and built transistors -- tiny on-off switches -- on their printed graphene crystals. Their transistors displayed high performance; they were more than 10 times faster than silicon transistors in moving "electronic holes" -- a key measure of speed.

The new technology could find almost immediate use in radio electronics, such as cell phones and other wireless devices that require high power output, Chou said. Depending on the level of interest from industry, the technique could be applied to wireless communication devices within a few years, Chou predicted.

“What we have done is shown that this approach is possible; the next step is to scale it up,” Chou said.
 
 
 
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