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:9/20/2017)... ... September 20, 2017 , ... Cybrexa ... Vishwas Paralkar to the role of chief scientific officer. In this role, Dr. ... to Cybrexa’s president and CEO, Per Hellsund. , “I was impressed with Cybrexa’s ...
(Date:9/20/2017)... Dallas-Fort Worth, Texas (PRWEB) , ... September 20, 2017 , ... ... people, stem cell therapy succeeded after standard medicine failed. Many of these people had ... - Progress, Not Regression Free Download (pdf) , “Neil ...
(Date:9/19/2017)... ... 2017 , ... A best-selling author and an international law ... Angela Duckworth and her team at Character Lab have joined Philadelphia’s ic@3401 as ... firm with decades of experience supporting high-growth companies in the technology and life ...
(Date:9/19/2017)... Ann Arbor, MI (PRWEB) , ... September 19, ... ... chemical testing laboratory, is pleased to announce the recipients of its 2017 Science ... academic achievement, exceptional leadership qualities, and involvement with community service defray the costs ...
Breaking Biology Technology:
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
(Date:3/30/2017)... -- The research team of The Hong Kong Polytechnic ... by adopting ground breaking 3D fingerprint minutiae recovery and matching technology, ... accuracy for use in identification, crime investigation, immigration control, security of ... ... A research team led by Dr ...
(Date:3/28/2017)... , March 28, 2017 The ... Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, ... Region - Global Forecast to 2022", published by MarketsandMarkets, ... 2016 and is projected to reach USD 75.64 Billion ... and 2022. The base year considered for the study ...
Breaking Biology News(10 mins):