Navigation Links
Carbon nanoribbons could make smaller, speedier computer chips
Date:5/28/2008

urrent to either pass through or be blocked, which in turn controls how the devices can be switched on and off, thereby regulating the flow of data.

Researchers predict that silicon chips will reach their maximum shrinking point within the next decade. This has prompted a search for materials to replace silicon as transistors continue to shrink in accordance with Moore's Law, which predicts that the number of transistors on a chip will double every two years. Graphene is one of the materials being considered.

David Goldhaber-Gordon, an assistant professor of physics at Stanford, proposed that graphene could supplement but not replace silicon, helping meet the demand for ever-smaller transistors for faster processing. "People need to realize this is not a promise; this is exploration, and we'll have a high payoff if this is successful," he said.

Dai said graphene could be a useful material for future electronics but does not think it will replace silicon anytime soon. "I would rather say this is motivation at the moment rather than proven fact," he said.

Although researchers, including those in his own group, have shown that carbon nanotubes outperform silicon in speed by a factor of two, the problem is that not all of the tubes, which can have 1-nanometer diameters, are semiconducting, Dai said. "Depending on their structure, some carbon nanotubes are born metallic, and some are born semiconducting," he said. "Metallic nanotubes can never switch off and act like electrical shorts for the device, which is a problem."

On the other hand, Dai's team demonstrated that all of their narrow graphene nanoribbons made from their novel chemical technique are semiconductors. "This is why structure at the atomic scale-in this case, width and edges-matters," he said.


'/>"/>

Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Awareness of Genzymes Renvela(R) (Sevelamer Carbonate) is High, Although Uptake of this New Phosphate Binding Agent has Been Slower than Nephrologists and Renal Dietitians Initially Expected
2. Breakthrough in nanotechnology by uncovering conductive property of carbon-based molecules
3. Carbon nanotube measurements: latest in NIST how-to series
4. Carbon nanotubes made into conductive, flexible stained glass
5. The future of computing -- carbon nanotubes and superconductors to replace the silicon chip
6. Carbon nanotubes outperform copper nanowires as interconnects
7. Mission critical for carbon management
8. National Association of Emergency Medical Technicians (NAEMT) Supports Prehospital Screening for Carbon Monoxide in the Blood
9. Carbon offset warning from international team of scientists
10. International Association of Fire Fighters (IAFF) Advocates Screening Fire Fighters for Carbon Monoxide Poisoning Using Pulse CO-Oximetry
11. ADM, MGSC and ISGS Announce Carbon Sequestration Project
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... , July 25, 2014 Amgen (NASDAQ: ... today declared a $0.61 per share dividend for the ... on Sept. 5, 2014, to all stockholders of record ... 2014.  About Amgen Amgen is committed ... from serious illnesses by discovering, developing, manufacturing and delivering ...
(Date:7/25/2014)... -- Trillions of bacteria live in each person,s digestive ... digest food and stave off harmful infections, but their ... To help shed light on the role of these ... professor Eric Alm recently tracked fluctuations in the bacterial ... The findings, described in the July 25 issue of ...
(Date:7/25/2014)... the University of Leicester has furthered our understanding ... to create new materials using nanosized ,building blocks,. ... the prestigious academic journal Physical Review Letters ... in rich detail the structure and internal atomic ... molecule and a single helium atom. , The ...
(Date:7/25/2014)... DUBLIN , July 25, 2014 ... of the "Global Metabolomics Market 2014-2018" ... http://photos.prnewswire.com/prnh/20130307/600769 Metabolomics or Metabonomics ... metabolites. Metabolomics has become a new experimental technique ... and the environmental sciences. Metabolites are small molecules ...
Breaking Biology Technology:Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Monitoring the rise and fall of the microbiome 2Monitoring the rise and fall of the microbiome 3Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3Global Metabolomics Market 2014-2018: Key Vendors are Agilent, Bio-Rad, Bruker, Human Metabolome and Metabolon 2
... Germany and OXFORD, England, January 7 /PRNewswire-FirstCall/,-- Evotec ... it has,successfully completed a Phase I safety and ... the good tolerability profile of EVT,302 and are ... EVT 302, a reversible and highly selective inhibitor ...
... SANTA MONICA, Calif., Jan. 7 Aida,Pharmaceuticals, Inc. ... received an award from the Science and Technology ... in China and known throughout,the country for its ... authority because of its "clinical research and,commercialization of ...
... from the department of macromolecular science and engineering ... Cleveland VA Medical Center and the NASA Glenn ... Nature Nanotechnology, one of the worlds most prestigious ... Jeffrey R. Capadona, associate investigator at the VAs ...
Cached Biology Technology:Phase I Safety and Tolerability Study With EVT 302 Successfully Completed 2Phase I Safety and Tolerability Study With EVT 302 Successfully Completed 3Phase I Safety and Tolerability Study With EVT 302 Successfully Completed 4Phase I Safety and Tolerability Study With EVT 302 Successfully Completed 5Aida Receives Chinese Government Innovation Award 2
(Date:7/25/2014)... N.Y., July 25, 2014 In the first broad-scale estimate ... Service scientists and collaborators calculated that trees are saving ... 670,000 incidences of acute respiratory symptoms. , While trees, ... of less than 1 percent, the impacts of that ... of the reduced air pollution at nearly $7 billion ...
(Date:7/25/2014)... colonial era, 100,000s of people lived on the land ... fire to control the availability of plants they used ... to use fire to maintain desired habitat and natural ... Forest Service,s Pacific Southwest Station, will lead a ... Refuge during the Ecological Society of America,s 99th Annual ...
(Date:7/25/2014)... on this false-color image from the Terra satellite show the ... of wildfires in Eastern Russia. The burn scars show ... The wildfires have broken across the remote parts of ... false-color image from the MODIS instrument, it is still ... continue. Two recent image features noted below show the devastating ...
Breaking Biology News(10 mins):First national study finds trees saving lives, reducing respiratory problems 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
... 2010 Country roadways can be hazardous for moose and ... elk and caribou in North America and Europe each year. ... pools that collect following pavement deicing. Because moose ... weighing up to 720 kilograms, their salt cravings can pose ...
... the Free State in South Africa (Ren Fourie and Charles ... (Rudy Jocqu) discovered very poorly known purse-web spiders of the ... new to science. The study was published in the open ... unique about purse-web spiders is that, in contrast to trapdoor ...
... have shown that a new experimental vaccine helps to ... from CSIRO,s Australian Animal Health Laboratory (AAHL) will announce ... Australian Veterinary Association conference in Adelaide today. "Our ... the infection of horses with Hendra virus," Dr Middleton ...
Cached Biology News:Of moose and men 2Vaccine protects from deadly Hendra virus 2
Form: Ready to use Applications: Immunohistology-frozen, Immunohistology-paraffin, Western Blot, ELISA...
... x W x H): 17 3/4" ... lbsCapacity: 12 slidesTime: Programmable 0 - 100 ... and hybridization steps 40 user programmable protocols ... Fixed temperature) Rapid temperature ramp-up from 37 ...
Goat polyclonal to p27 KIP 1 ( Abpromise for all tested applications). Antigen: Synthetic peptide: C-KRPATDDS STQNK, corresponding to Internal sequence amino acids 153-165 of Human p27 KIP 1 ...
Anti-Mouse Macrophages (Metallophillic), Purified (Clone MOMA-1) (rat IgG2a)...
Biology Products: