Navigation Links
Light-speed nanotech: Controlling the nature of graphene
Date:1/21/2009

Troy, N.Y. Researchers at Rensselaer Polytechnic Institute have discovered a new method for controlling the nature of graphene, bringing academia and industry potentially one step closer to realizing the mass production of graphene-based nanoelectronics.

Graphene, a one-atom-thick sheet of carbon, was discovered in 2004 and is considered a potential heir to copper and silicon as the fundamental building blocks of nanoelectronics.

With help from an underlying substrate, researchers for the first time have demonstrated the ability to control the nature of graphene. Saroj Nayak, an associate professor in Rensselaer's Department of Physics, Applied Physics, and Astronomy, along with Philip Shemella, a postdoctoral research associate in the same department, have determined that the chemistry of the surface on which graphene is deposited plays a key role in shaping the material's conductive properties. The results are based on large-scale quantum mechanical simulations.

Results show that when deposited on a surface treated with oxygen, graphene exhibits semiconductor properties. When deposited on a material treated with hydrogen, however, graphene exhibits metallic properties.

"Depending on the chemistry of the surface, we can control the nature of the graphene to be metallic or semiconductor," Nayak said. "Essentially, we are 'tuning' the electrical properties of material to suit our needs."

Conventionally, whenever a batch of graphene nanostructures is produced, some of the graphene is metallic, while the rest is semiconductor. It would be nearly impossible to separate the two on a large scale, Nayak said, yet realizing new graphene devices would require that they be comprised solely of metallic or semiconductor graphene. The new method for "tuning" the nature of graphene is a key step to making this possible, he said.

Graphene's excellent conductive properties make it attractive to researchers. Even at room temperature, electrons pass through the material effortlessly, near the speed of light and with little resistance. This means a graphene interconnect would likely stay much cooler than a copper interconnect of the same size. Cooler is better, as heat produced by interconnects can have negative effects on both a computer chip's speed and performance.


'/>"/>

Contact: Michael Mullaney
mullam@rpi.edu
518-276-6161
Rensselaer Polytechnic Institute
Source:Eurekalert  

Related biology technology :

1. Asbestos, Pharmaceutical Liability, Construction Defects, Nanotech: Covered by Targeted CLE Teleconferences
2. Nanotech: To know it is not necessarily to love it
3. Nanotech: A regulatory blueprint for the next administration
4. China Biologic Products Enters Into Agreement to Acquire 90% Controlling Interest in Chongqing Dalin Biologic Technologies Co., Ltd.
5. Controlling the size of nanoclusters
6. Light touch: Controlling the behavior of quantum dots
7. Controlling the size of nanoclusters: First step in making new catalysts
8. ProMetic to obtain controlling stake in Pathogen Removal and Diagnostic Technologies Inc.
9. Gladstone scientists identify role of tiny RNAs in controlling stem cell fate
10. Data Published in Nature Cell Biology Reveal Novel Function of Drug Target EpCAM in Cancer Cell Signalling
11. Research Published in Nature Medicine Shows Disruption of Chemokine Interactions Inhibits Atherosclerosis in Mice
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Light-speed nanotech: Controlling the nature of graphene
(Date:2/21/2017)... ... February 21, 2017 , ... Vortex Biosciences ... a fully automated benchtop system for collecting intact circulating tumor cells (CTCs) that ... the Molecular Medicine Tri Conference (Tri-Con) Annual Meeting 2017 (February 19–24 San Francisco). ...
(Date:2/21/2017)... CA (PRWEB) , ... February 21, 2017 , ... ... its GMP cell therapy manufacturing facility at its headquarters laboratory in Poway, California. ... and utilizing the experience of both in-house personnel and consultants, VetStem constructed and ...
(Date:2/21/2017)... -- Scientists From Two Companies to Accelerate ... ... STEER, creator of advanced materials platform technologies that ... plastics, pharmaceuticals, food and nutraceuticals, biomaterials and biorefining, today announced ... technology company, on creating co-rotating twin screw extruder technology ...
(Date:2/20/2017)... YORK , Feb. 20, 2017  This Report analyzes the ... Hardware, and Biocontent. The report provides separate comprehensive analytics for the ... Europe , Asia-Pacific , ... Read the full report: http://www.reportlinker.com/p04707099-summary/view-report.html ... Annual estimates and forecasts are ...
Breaking Biology Technology:
(Date:2/1/2017)... BOSTON, Massachusetts , February 1, 2017 ... and events on emerging technology, announces the availability of a new ... Continue Reading ... ... systems in industrial and collaborative robots. Source: IDTechEx Report "Sensors for ...
(Date:1/30/2017)... , Jan. 30, 2017   Invitae Corporation ... fastest growing genetic information companies, today announced that it ... results and provide 2017 guidance on Monday, February 13, ... call that day at 4:45 p.m. Eastern / 1:45 ... management team will briefly review financial results, guidance, and ...
(Date:1/26/2017)... 2017  Acuity Market Intelligence today released the ... Identity".  Acuity characterizes 2017 as a "breakout" year ... reflects a new understanding of the potential benefits ... digital identity are often perceived as threats to ... Principal of Acuity Market intelligence. "However, taken together ...
Breaking Biology News(10 mins):