Abstract: High-performance graphene field-effect transistors have been fabricated on epitaxial graphene synthesized on a two-inch SiC wafer, achieving a cutoff. GHz Transistors from Wafer-Scale Epitaxial Graphene. Y.-M. Lin*,; C. Dimitrakopoulos,; K. A. Jenkins,; D. B. Farmer,; H.-Y. Chiu,; A. Grill. Including Carbon Nanotubes and Graphene Prasanna Chandrasekhar GHz transistors from wafer-scale epitaxial graphene” were reported, also from an of a SiC wafer, achieving a cutoff frequency of GHz for a gate length of nm.
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GHz Transistors from Wafer-Scale Epitaxial Graphene | Science
This is an important milestone in utilizing graphene for technologically relevant applications. Computer Science The sex robots are here. Do you foresee transistods social or political implications for your research? Message Body Your Name thought you would like to see this page from the Science web site. This paper is likely well-cited because it presents one of the first experimental demonstrations of gigahertz graphene transistors with the highest frequency reported thus far, and establishes the scaling behavior epitsxial device performance with respect to the device dimension.
Another great challenge involved the deposition of a high-quality rransistors on graphene without deteriorating its transport properties, and this issue was successfully addressed by a process developed by Dr.
The work benefited greatly from the insightful discussions and guidance of Dr. The author has also sent along images of his work. We do not capture any email address.
Where do you see your research leading in the future? Would epiyaxial summarize the significance of your paper in layman’s terms? Scanning electron microscope image of a graphene device. Working Life Forced to change—for good. May – New Hot Papers: Please log in to add an alert for this article.
Log in through your institution Log in with your institution via Shibboleth. This work also pointed out the issues to be addressed in order to fully utilize the potential of graphene in high-frequency electronics. While I do not expect to see any immediate social or political impact from our research, I hope that this research may open up new directions for the electronics industry beyond the conventional semiconductor materials such as Si, and potentially generate niche applications based on high-performance graphene devices.
Quasicrystals Tessellating tiny tetrahedrons. International Security Next-generation wargames. Keith Jenkins and Dr. I was already exploring electrical transport properties of graphene and its nano-ribbons, and became involved with the fabrication and characterization of graphene transistors when the CERA program was launched in May, Support Contact Us Corporate website. Graphene is a two-dimensional crystal consisting of a monolayer of carbon atoms arranged in a honeycomb lattice, and possessing unusual electronic properties that may eventually lead to vastly faster transistors than those achieved so far.
Register for free to read this article As a service to the community, this article is available for free. This work is therefore relevant and of interest to a wider audience within the graphene research community.
Save to my folders. Message Subject Your Name has forwarded a page to you from Science. Top-gated graphene field-effect transistor. We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. Why do you think your paper is highly cited? Alberto Valdes-Garcia designed the transistor and performed the RF characterization. The maximum switching frequency of these devices exceeds that of silicon transistors with similar gate-electrode dimensions.
Does it describe a new discovery, methodology, or synthesis of knowledge? Yu-Ming Lin talks with ScienceWatch. By grapehne a metal gate electrode on the graphene channel, we demonstrated a graphene transistor that is capable of amplifying electrical signals at very high frequencies.
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100-GHz transistors from wafer-scale epitaxial graphene.
Thank you for your interest in spreading the word about Science. Graphene is a material that has generated enormous research interest and activity in the past few years because of its unique electrical properties and wafer-wcale potential for use in future electronics. More options Purchase digital access to this article Download and print this article for your personal scholarly, research, and educational use. Register for free to read this article. The major challenges of this work included the design of the graphene transistor and the deposition of a high-quality oxide film as the gate insulator.
We also investigated, graphehe the first time, the scaling behavior of graphene devices as the device dimension shrinks, which exhibits a different trend from fransistors of conventional semiconductors. I hope the impact of this research could lead to graphene-based integrated circuits for analog and, perhaps, digital transistore.
Graphene holds great potential for future electronics, and its destiny is largely linked to various materials issues that need to be resolved, including the synthesis of large-scale, high-quality graphene sheets dpitaxial the improvement of the device fabrication process. Log in to view full text via AAAS login. In this paper, we presented an approach to fabricate top-gated graphene transistors using exfoliated graphene extracted from a graphite crystal, and demonstrated the operation of the graphene transistors at a frequency as high as 26 gigahertz, or 26 billion cycles per second.
Existing users log in. How did you become involved in this research, and were there any problems along the way?