Navigation Links
Carbon nanotube avalanche process nearly doubles current
Date:2/9/2009

reaking point in an oxygen-free environment.

"We found that the current first plateaus near 25 microamps, and then sharply increases at higher electric fields," said Pop, who also is affiliated with the Beckman Institute and the Micro and Nanotechnology Laboratory at the U. of I. "We performed repeated measurements, obtaining currents of up to 40 microamps, nearly twice those of previous reports."

By inducing very high electric fields in the nanotubes, the researchers drove some of the charge carriers into nearby subbands, as part of the avalanche process. Instead of being in just one "lane," the electrons and holes could occupy several available lanes, resulting in much greater current.

The avalanche process (which cannot be observed in metallic carbon nanotubes because an energy gap is required for electron-hole multiplication) offers additional functionality to semiconducting nanotubes, Pop said. "Our results suggest that avalanche-driven devices with highly nonlinear turn-on characteristics can be fashioned from semiconducting single wall nanotubes."


'/>"/>

Contact: James E. Kloeppel, Physical Sciences Editor
kloeppel@illinois.edu
217-244-1073
University of Illinois at Urbana-Champaign
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology technology :

1. Sheet of carbon atoms acts like a billiard table, physicists find
2. Sheet of carbon atoms acts like a billiard table, physicists find
3. Researchers measure carbon nanotube interaction
4. The sensitive side of carbon nanotubes: Creating powerful pressure sensors
5. NASA Goddard Space Flight Centers carbon nanotube manufacturing technology wins Nano 50 Award
6. Understanding of actuator properties of carbon nanotubes bring micro machines closer
7. Improved wettability of carbon nanotubes opens the door to new possibilities
8. Growing tiny carbon nanotube wires to connect computer chips of the future
9. Carbon nanotubes to be replaced by MoSIx nanowires in high-tech devices says new study
10. FED-TVs with carbon nanotube technology could supersede plasma and LCD flat screens
11. Clemson researcher studies carbon fibers for nuclear reactor safety
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/21/2013)... (PRWEB) May 21, 2013 Through science ... and funds for lab equipment, 25 organizations will continue ... importance of optics and photonics in daily life with ... , The organizations, located in 10 countries, are the ... be awarded by SPIE, the international society for ...
(Date:5/21/2013)... (PRWEB) May 21, 2013 ... services company for clinical trials, announced today it ... Solutions, LLC. Clinverse’s ClinPay® FLS eClinical commerce ... payment process. SpendMD ™, Aggregate Spend ... solution for tracking and reporting transfer of value ...
(Date:5/21/2013)... Emerson Resources Inc. , a premier ... the Company’s Chief Executive Officer and Chairman of the ... of service. As part of Emerson Resources’ planned leadership ... named as Dr. Signorino’s successor. , Dr. Signorino ... made a significant contribution to the field during his ...
(Date:5/21/2013)... Revolutionary Science, the manufacturer of the IncuCount ... they have expanded their colony counter product line to ... and ImpressCount. These affordable colony counters that range ... microbiology and pharmaceutical manufacturing. , The previously released IncuCount ... white enclosure with jet black accents represent the updated ...
Breaking Biology Technology:Learning About Light: Education Outreach Projects Funded in 10 Countries Through First Round of SPIE Grants 2Learning About Light: Education Outreach Projects Funded in 10 Countries Through First Round of SPIE Grants 3Clinverse, Inc. Announces Strategic Alliance with Aggregate Spend Solutions, LLC 2Clinverse, Inc. Announces Strategic Alliance with Aggregate Spend Solutions, LLC 3Emerson Resources Announces CEO Retirement and Appointment of Successor 2Emerson Resources Announces CEO Retirement and Appointment of Successor 3Revolutionary Science Announces New Automatic and Manual Colony Counting Products 2
... 23, 2011 BioDrain Medical, Inc. (OTC Bulletin Board: ... Streamway® System for automated surgical fluid disposal, announced today ... Number 2,495,747 – for the Company,s Streamway System "for ... workers." The patent was granted to the Company in ...
... , MADISON In the computer displays of medical ... already found a major role. But a discovery reported ... of liquid crystal, which have been found to change ... presence of very low concentrations of a particular bacterial ...
... 2011 Today, the United States District Court for ... plaintiffs Cephalon, Inc. (NASDAQ: CEPH ), and ... Mylan Pharmaceuticals Inc., and Mylan Inc., from manufacturing, using, ... capsules, a generic version of Cephalon,s branded product AMRIX®. ...
Cached Biology Technology:BioDrain Medical, Inc. Granted Canadian Patent for its Streamway® Surgical Fluid Management System 2BioDrain Medical, Inc. Granted Canadian Patent for its Streamway® Surgical Fluid Management System 3Liquid crystal droplets discovered to be exquisitely sensitive to an important bacterial lipid 2Liquid crystal droplets discovered to be exquisitely sensitive to an important bacterial lipid 3Cephalon Granted Temporary Restraining Order in AMRIX® Patent Litigation 2Cephalon Granted Temporary Restraining Order in AMRIX® Patent Litigation 3
(Date:5/21/2013)... a class of pharmaceuticals can both prevent and treat ... as "TSPO ligands," are currently used for certain types ... TSPO ligand in young adult mice when pathology was ... pathology was quite severe," said lead researcher Christian Pike ... reduced measures of pathology and improved behavior at both ...
(Date:5/21/2013)... Researchers at the University of Illinois at Chicago College of ... and stores fat -- its main energy source -- and ... disease, under a new $2 million, 4-year grant from the ... heart changes how it uses fuel for energy. These changes ... disease and are different in men and women, says E. ...
(Date:5/21/2013)... scientists have charted the path of insulin action in ... a comprehensive blueprint for understanding what goes wrong in ... Humphrey and Professor David James from Sydney,s Garvan Institute ... online edition of the prestigious journal Cell Metabolism ... plays a very important role in the body because ...
Breaking Biology News(10 mins):Drugs found to both prevent and treat Alzheimer's disease in mice 2Do men's and women's hearts burn fuel differently? 2Insight into the dazzling impact of insulin in cells 2Insight into the dazzling impact of insulin in cells 3
... six thousand years in estuary sedimentation records to look ... published in Global Change Biology , show an ... 60 years. This shift could diminish the ability of ... climate change. According to Dr. Peter Macreadie, University ...
... to understand the effect of ageing on the immune ... Biological Sciences Research Council (BBSRC) announced investment in a ... be led by researchers from the Babraham Institute with ... Laboratory of Molecular Biology. The team hopes to illuminate ...
... springtime but, viewed under the microscope, a pollen grain ... pollen are part of an exhibition at CSIRO Discovery ... The exhibition ,Pollen Under the Microscope, celebrates the ... and speed up our understanding of nature. It ...
Cached Biology News:New research aims to shed light on how aging affects immunity 2New research aims to shed light on how aging affects immunity 3Pollen research not be sniffed at 2
Form: Ready to use Applications: ELISA...
RABBIT ANTI HALOPERIDOL...
Form: Ready to use Applications: ELISA...
Form: Ready to use Applications: Western Blot, ELISA...
Biology Products: