Navigation Links
Triple-mode transistors show potential
Date:10/13/2010

Rice University research that capitalizes on the wide-ranging capabilities of graphene could lead to circuit applications that are far more compact and versatile than what is now feasible with silicon-based technologies.

Triple-mode, single-transistor amplifiers based on graphene -- the one-atom-thick form of carbon that recently won its discoverers a Nobel Prize -- could become key components in future electronic circuits. The discovery by Rice researchers was reported this week in the online journal ACS Nano.

Graphene is very strong, nearly transparent and conducts electricity very well. But another key property is ambipolarity, graphene's ability to switch between using positive and negative carriers on the fly depending on the input signal. Traditional silicon transistors usually use one or the other type of carrier, which is determined during fabrication.

A three-terminal single-transistor amplifier made of graphene can be changed during operation to any of three modes at any time using carriers that are positive, negative or both, providing opportunities that are not possible with traditional single-transistor architectures, said Kartik Mohanram, an assistant professor of electrical and computer engineering at Rice. He collaborated on the research with Alexander Balandin, a professor of electrical engineering at the University of California, Riverside, and their students Xuebei Yang (at Rice) and Guanxiong Liu (at Riverside).

Mohanram likened the new transistor's abilities to that of a water tap. "Turn it on and the water flows," he said. "Turn it off and the water stops. That's what a traditional transistor does. It's a unipolar device -- it only opens and closes in one direction."

"But if you close a tap too much, it opens again and water flows. That's what ambipolarity is -- current can flow when you open the transistor in either direction about a point of minimum conduction."

That alone mea
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. New computer switches handle heat that renders transistors useless
2. UCLA chemists, engineers achieve world record with high-speed graphene transistors
3. New nanoscale transistors allow sensitive probing inside cells
4. Nanoribbons for graphene transistors
5. Nanowires key to future transistors, electronics
6. Mysterious charge transport in self-assembled monolayer transistors unraveled
7. USC researchers print dense lattice of transparent nanotube transistors on flexible base
8. Aeterna Zentaris Announces Orphan Drug AEZS-130 (Macimorelin, Solorel(TM)) Interim Phase 3 Data Analysis Shows Potential for 2011 Filing as Oral Diagnostic Test for Adult Growth Hormone Deficiency (AGHD)
9. Solar cells thinner than wavelengths of light hold huge power potential
10. Glenmark Announces the Discovery of a Novel Chemical Entity GRC 17536, a TRPA1 Receptor Antagonist, a Potential First-in-Class Molecule Globally
11. Reportlinker Adds Biosimilars and Follow-On Biologics: Global Market Outlook 2010-2025 - Opportunities and Challenges in this Emerging Market With High Potential
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/4/2015)... TEL AVIV, Israel , May 4, 2015 /PRNewswire/ ... has filed its annual report on Form 20-F for ... U.S. Securities and Exchange Commission ("SEC"). The annual report ... for the development of antibodies in the area of ... antibodies with superior qualities of high specificity and binding ...
(Date:5/4/2015)... 2015 /PRNewswire/ - The Fight Against Cancer Innovation ... announce the formation of Turnstone Biologics Inc. (Turnstone), ... cancer that harness the patient,s own immune system. ... between the Children,s Hospital of Eastern ... the Ontario Institute for Cancer Research (OICR), the ...
(Date:5/4/2015)... Achieved primarily through a proprietary paraffin ... 10 to 100x better detail than the industry standard. ... existing light microscopy methods, it needed another medium to ... the frame of reference because it represents the highest ... from the earliest discovery days of Ultralight Histology was ...
(Date:5/4/2015)... , May 4, 2015 ... thousands of med students prepare for the United States ... world-leading provider of scientific, technical and medical information products ... free MOOC (Massive Open Online Course) designed to help ... Examination (USMLE) Step 1, the first and most daunting ...
Breaking Biology Technology:Tikcro Technologies Files Annual Report on Form 20-F for the Year Ended December 31, 2014 2Turnstone Biologics Inc. to accelerate clinical and commercial translation of cancer immunotherapies 2Turnstone Biologics Inc. to accelerate clinical and commercial translation of cancer immunotherapies 3Elsevier's Free MOOC Prepares Med Students for Licensing Exam 2Elsevier's Free MOOC Prepares Med Students for Licensing Exam 3
... , , Multiporator , , , , , , ... Protocol No. 4308 915.033 11/1999 , , , ... , Cell line , ... Transfection with , Plasmid pEGFP-N1 (in bidistilled H 2 O), ...
... , , , , , , , Multiporator , , , ... Transfection Protocol , Protocol No. 4308 915.022 11/1999 , ... , , , , ... , Transfection with , Plasmid RSV/lacZ (in ...
... , , , , Multiporator / Electroporator 2510 , , , , ... Transformation Protocol , Protocol No. 4308 915.510 12/2001 , ... , , , , ... , Cell type , Bacteria, gram positive, ...
Cached Biology Technology:EL 4 2COS-7 2Corynebacterium glutamicum 2
(Date:4/1/2015)...   Medisafe ™, the leading global medication management ... and Android smartphones and tablets, announces ... platform to allow patients to track and correlate their ... patients will be able to visualize in real-time how ... such as glucose levels and blood pressure. ...
(Date:3/24/2015)... , Mar. 24, 2015 Research and Markets ... the "Global Iris Recognition Market 2015-2019" report ... Global Iris Recognition market to grow at a CAGR ... This report covers the present scenario and the growth ... period 2015-2019. To calculate the market size, the report ...
(Date:3/23/2015)... March 23, 2015   HOYOS Labs , a ... today announced that the Company will demonstrate multiple biometrics-based ... and consumers at Connect:ID on March 23 through 25, ... Labs will highlight the IEEE Biometric Open Protocol Standard; ... and enterprise access control system. BOPS was invented by ...
Breaking Biology News(10 mins):Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... It looks, contracts and responds almost like natural heart ... And it brings scientists another step closer to the ... or eventually growing an entirely new heart from just ... University of Michigan researchers are reporting significant progress in ...
... to learn the significance of new odors, researchers have found ... as a chemical booster that facilitates the ability of pups ... , The findings, which deepen our understanding of pheromone ... life, are reported in the October 10th issue of the ...
... Malaria may be fueling the spread of HIV in areas ... the two diseases, while HIV may be playing a role ... region, according to a new study by researchers at Fred ... The findings, published in the Dec. 8 issue of Science, ...
Cached Biology News:A new approach to growing heart muscle 2A new approach to growing heart muscle 3A new approach to growing heart muscle 4Pheromone from mother's milk may rapidly promote learning in newborn mammals 2Malaria may fuel spread of HIV in sub-Saharan Africa 2
... Modular system for large format and ... six lab-cast or precast gels (26 ... or 24-cm Immobiline DryStrip gels.Simple-to-use 1.0-mm ... design simplifies loading and unloading.Built-in ceramic ...
Edited by P.J. Delves (1997) An up-to-date review of antibody-raising technologies, this volume provides researchers with immediate access to the protocols they require every day....
Request Info...
MOUSE ANTI HUMAN FACTOR I...
Biology Products: