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

Stanford chemists have developed a new way to make transistors out of carbon nanoribbons. The devices could someday be integrated into high-performance computer chips to increase their speed and generate less heat, which can damage today's silicon-based chips when transistors are packed together tightly.

For the first time, a research team led by Hongjie Dai, the J. G. Jackson and C. J. Wood Professor of Chemistry, has made transistors called "field-effect transistors"-a critical component of computer chips-with graphene that can operate at room temperature. Graphene is a form of carbon derived from graphite. Other graphene transistors, made with wider nanoribbons or thin films, require much lower temperatures.

"For graphene transistors, previous demonstrations of field-effect transistors were all done at liquid helium temperature, which is 4 Kelvin [-452 Fahrenheit]," said Dai, the lead investigator. His group's work is described in a paper published online in the May 23 issue of the journal Physical Review Letters.

The Dai group succeeded in making graphene nanoribbons less than 10 nanometers wide, which allows them to operate at higher temperatures. "People had not been able to make graphene nanoribbons narrow enough to allow the transistors to work at higher temperatures until now," Dai said. Using a chemical process developed by his group and described in a paper in the Feb. 29 issue of Science, the researchers have made nanoribbons, strips of carbon 50,000-times thinner than a human hair, that are smoother and narrower than nanoribbons made through other techniques.

Field-effect transistors are the key elements of computer chips, acting as data carriers from one place to another. They are composed of a semiconductor channel sandwiched between two metal electrodes. In the presence of an electric field, a charged metal plate can draw positive and negative charges in and out of the semiconductor. This allows the electric c
'/>"/>

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:10/30/2014)... , Oct. 30, 2014  Ardelyx, Inc. (NASDAQ: ... focused on cardio-renal, gastrointestinal and metabolic diseases, today ... financial results on Thursday, November 6, 2014. Following ... a live conference call and webcast at 4:30pm ... provide a business update. The live ...
(Date:10/30/2014)... Illinois (PRWEB) October 30, 2014 ... and Cellular Medicine Showcase in Chicago, leading applied ... Orthopedic Surgeon, Dr. Wade McKenna presented talks on ... and Orthopedic Surgical Applications For Stem Cells. , ... amniotic membrane and the properties of AlphaGEMS that ...
(Date:10/30/2014)... 30, 2014 James Sherley says he has ... tissue stem cell technology since his days as a principal ... in the late 1990’s. Sherley founded the ASCTC as ... holds all the intellectual property developed in Sherley’s research over ... Massachusetts Institute of Technology (MIT), and more recently as a ...
(Date:10/30/2014)... Avure Technologies celebrates a year of success and the ... fleet of high volume High Pressure Processing (HPP) systems. , ... to PackExpo this year, which is where we first announced ... Williams, CEO at Avure. “Sales of the new Avure machine ... the challenges of market demand for higher throughput. We sold ...
Breaking Biology Technology:Ardelyx to Report Third Quarter 2014 Financial Results on November 6, 2014 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 4Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 2In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 3
... ... attracts investors, COLUMBUS, Ohio, Aug. ... for venture capital investments in biotech innovation and,business growth, according ... markets the state for capital,investment. The report, released by BioEnterprise, ...
... Barr,Pharmaceuticals, Inc. (NYSE: BRL ) today ... a challenge of the patent listed by,Warner Chilcott ... (norethindrone and ethinyl estradiol) chewable oral contraceptive. The,Company ... an Abbreviated New Drug,Application (ANDA) containing a paragraph ...
... Keck Graduate Institute,(KGI) today announced the election of ... M. Burzik, chief executive officer of Kinetic Concepts,Inc.; ... at,Gilead Sciences; and Peter Barton Hutt, senior counsel ... of leaders in business, industry and education who,have ...
Cached Biology Technology:Ohio Ranks Best in the Midwest for Venture Capital Investment in Health Care Bioscience Industry 2Barr Confirms Filing an Application With a Paragraph IV Certification for Femcon(R) FE Chewable Oral Contraceptive Product 2Barr Confirms Filing an Application With a Paragraph IV Certification for Femcon(R) FE Chewable Oral Contraceptive Product 3KGI Elects Three New Members to Board of Trustees 2
(Date:10/30/2014)... help reduce or reverse soil subsidence and reduce ... Sacramento-San Joaquin River Delta by Dartmouth College researchers ... one of the first to continually measure the ... cycle through wetlands, appears in the journal by ... Worldwide, agricultural drainage of organic soils has resulted ...
(Date:10/30/2014)... Philadelphia, PA, October 30, 2014 – Bacteria in ... are critical for digestion. Yet, these same bacteria ... system if they penetrate the gut and enter ... natural response to protect the body, chronic or ... diseases. Prior research has established the involvement of ...
(Date:10/29/2014)... their hair as a consequence of chemotherapy will benefit ... scalp cooling technology that prevents hair loss. , The ... by global scalp cooling manufacturing company, Paxman Coolers, of ... of the University of Huddersfield. , The research will ... a background in the pharmacology of cancer treatment, which ...
Breaking Biology News(10 mins):Dartmouth study finds restoring wetlands can lessen soil sinkage, greenhouse gas emissions 2Breakdown in gut barriers to bacteria may promote inflammation and craving in alcoholics 2New technology on the way to aid cancer suffers who lose their hair after chemotherapy 2
... simple technique to make a common virus-killing material significantly more ... Andrew Barron and Qilin Li. Rather than trying to ... into the public domain. They hope wide adoption will save ... professors and their team reported in Environmental Science and ...
... ITHACA, N.Y. Scientists have identified the genes related ... for planting crops closer together, which has led to an ... Genetics , Jan. 9, 2011.) The study, led ... Agricultural Research Service (USDA-ARS) at Cornell and North Carolina ...
... MD (January 11, 2011)-- The Genetics Society of America ... Research Conference, March 30-April 3, 2011 at the Town ... This annual meeting brings together basic research scientists, ... the common fruit fly, whose hereditary traits Thomas Hunt ...
Cached Biology News:Virus killer gets supercharged 2Virus killer gets supercharged 3Technique allows researchers to identify key maize genes for increased yield 252nd Genetics Society of America Drosophila Research Conference announced 2
Chicken polyclonal to DCTD ( Abpromise for all tested applications). Antigen: Full length protein (Human) Entrez GeneID: 1635 Swiss Protein ID: P32321...
Rab 3 Immunogen: Synthetic peptide corresponding to the N-terminal region of Rab 3 protein. Storage: -20 C, Avoid Freeze/Thaw Cycles...
...
Mouse monoclonal [2G1] to Vancomycin ( Abpromise for all tested applications)....
Biology Products: