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:9/18/2014)... Sept. 18, 2014 Research and ... "Global N-acetylcysteine Industry Report 2014" report ... N-acetylcysteine Industry Report 2014 is a professional and ... global N-acetylcysteine industry. The report provides ... classifications, applications and industry chain structure. The N-acetylcysteine ...
(Date:9/18/2014)... Sept. 18, 2014  U.S. biotech company Kultevat ... exclusive license for technology developed by the Donald ... in plants, including for applications in production of natural ... The technology was developed under the direction of ... and former president of the Danforth Plant Science Center, ...
(Date:9/18/2014)... Pennsylvanie, 18 septembre 2014 Mapi, ... en 1974, a été depuis 40 ans ... évaluations cliniques traditionnelles par des évaluations recentrées ... sur les impacts économiques des traitements. ... A cours d,une récente conférence ...
(Date:9/18/2014)... dysplasia is a group of rare diseases that ... cartilage. Its onset hits at the fetal stage ... in the gene encoding fibroblast growth factor receptor ... of skeletal dysplasia, thanatophoric dysplasia (TD), a skeletal ... and is often lethal, and achondroplasia (ACH), which ...
Breaking Biology Technology:Global N-acetylcysteine Industry Report 2014 2Kultevat obtains license of gene switch technology 21974 - 2014 - Mapi fĂȘte ses 40 ans 2Researchers use iPS cells to show statin effects on diseased bone 2Researchers use iPS cells to show statin effects on diseased bone 3
... their voracious appetite for wood, rendering houses to dust and ... provide the biochemical means to a greener biofuel future. ... mine of microbes that have now been tapped as a ... or waste biomass to valuable biofuels. , The ...
... will utilise technologies not currently available. An example of ... as interconnects for computer chips. This is now a ... nanotechnology researchers within the Materials Ireland Polymer Research Centre ... develop such junction structure nanotubes used various different methods ...
... us, in us and for us. Imagine them seeking out ... place. Just as a car is a combination of a ... etc, nanomachines too need to be constructed from a range ... of actuator to open and close things, to absorb shock, ...
Cached Biology Technology:DOE JGI plumbs termite guts to yield novel enzymes for better biofuel production 2DOE JGI plumbs termite guts to yield novel enzymes for better biofuel production 3DOE JGI plumbs termite guts to yield novel enzymes for better biofuel production 4DOE JGI plumbs termite guts to yield novel enzymes for better biofuel production 5Understanding of actuator properties of carbon nanotubes bring micro machines closer 2
(Date:9/17/2014)... environmental impact recently scored a major win. In August, ... bags, and Governor Jerry Brown is expected to sign ... without a fight, according to an article in ... the American Chemical Society. , Alexander Tullo, a senior ... its first small victory in 1990 when Nantucket became ...
(Date:9/17/2014)... the human retinoblastoma protein gene are a leading cause ... turned to fruit fly eyes to unlock the secrets ... paper featured on the cover of the current issue ... State University researchers provide the first detailed examination of ... the human cancer gene, said Irina Pushel, MSU undergraduate ...
(Date:9/17/2014)... crime unit designed to fight food fraud in ... being passed off as beef scientists from Germany ... describe their approach, which represents a vast improvement over ... Food Chemistry . , Hans-Ulrich Humpf and colleagues note ... But they also say that adding, for example, horse ...
Breaking Biology News(10 mins):Abnormal properties of cancer protein revealed in fly eyes 2
... Detroit automaker, it appears that nature prefers to build its ... combining advanced computational modeling and cutting-edge experiments by molecular biologists ... the most stable parts of a protein are also the ... Sept. 13 issue of the journal Structure. , Nature refuses ...
... are miniature labs that can be swallowed like a ... Their function is to screen for, detect, and ... still at a single-cell size in early development stages. ... and water. , Engineering researchers at McMaster University will ...
... the event of a large-scale smallpox bioterrorist attack in ... researchers at Fred Hutchinson Cancer Research Center that appears ... Instead, the current U.S. government policy of post-release surveillance, ... and close contacts would be sufficient to thwart an ...
Cached Biology News:Protein folding: Building a strong foundation 2Nano-devices hold promise for early-stage cancer detection 2Nano-devices hold promise for early-stage cancer detection 3Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 2Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 3Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 4Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 5
Human PDGF, CF...
... For the ultimate in utility and ... to meet the needs of the researcher. ... interior dimensions or as sheet material that ... enclosures. These isolators are autoclavable and non-cytotoxic ...
... The mycobacteria in Complete Freund's adjuvant ... injection site which enhances the immuneresponse. For ... used for the initial injections; Incomplete Freund's ... Antigens (preferably in saline) are typically mixed ...
The ELISA Kit for Hepatitis B Surface Antigen (HBsAg) is an in vitro enzyme immunoassay for the detection of HBsAg in human serum or plasma....
Biology Products: