13 May '13, 8am

#Graphene set to enable new definition of the #Ampere. @NPL @Cambridge_Uni

#Graphene set to enable new definition of the #Ampere. @NPL @Cambridge_Uni

The Ampere – one of the seven base units of the SI system – is defined officially in terms of the force generated between two parallel wires placed 1m apart in a vacuum. However, this is seen as not being sufficiently accurate. The NPL's solution is a graphene single electron pump (SEP), which provides the speed of electron flow needed to create a new standard for electrical current based on electron charge. An SEP creates a flow of individual electrons by shuttling them into a quantum dot and emitting them one at a time at a well defined rate. A good SEP, says NPL, pumps one electron at a time to ensure accuracy, but pumps them quickly to generate a sufficiently large current. While SEPs made of aluminium are very accurate, they pump electrons too slowly. Graphene's semi metallic 2d structure has the properties needed to let electrons on and off the quantum dot at gigaher...

Full article: http://www.newelectronics.co.uk/electronics-news/graphene...

Tweets

Graphene may re-define the ampere: UK researchers are proposing to re-define the ampere using a graphene pump

Graphene may re-define the ampere: UK researche...

electronicsweekly.com 13 May '13, 10am

Graphene may re-define the ampere no comment steve bush 2013/05/13 UK researchers are proposing to re-define the ampere us...

#Graphene given magnetic properties.

newelectronics.co.uk 13 May '13, 10am

, is said to enable the possible development of graphene based spintronic devices. "In spite of the huge efforts to date o...

Graphene Gets A New Superpower: Magnetism

Graphene Gets A New Superpower: Magnetism

cleantechnica.com 14 May '13, 10am

Graphene is a carbon material only one atom thick, but its superhero scale strength and other unique behaviors are beginni...

Graphene Nanopump Zeroes in on the Perfect Ampere

Graphene Nanopump Zeroes in on the Perfect Ampere

spectrum.ieee.org 17 May '13, 9pm

Researchers use oscillating voltages to drive the current, but there are built-in challenges. Lower frequency pumps—metall...

SunPower (NASDAQ: SPWR) and Graphene Investing: Filed under: Energy News

SunPower (NASDAQ: SPWR) and Graphene Investing:...

altenergystocks.com 14 May '13, 12pm

've said it before, and I'll say it again... If you want to profit from solar, the money is in installation and technology...

New magnetic graphene may revolutionize electronics #news #electronics

New magnetic graphene may revolutionize electro...

ecnmag.com 10 May '13, 4pm

Researchers from IMDEA-Nanociencia Institute and from Autonoma and Complutense Universities of Madrid (Spain) have managed...

Stange set for Singapore

fifa.com 16 May '13, 1am

Singapore on Wednesday named Bernd Stange of Germany as head coach of the national team, replacing Serbian Radojko Avramov...

High-performance set-top box SoC supports high-...

eetimes.com 13 May '13, 1am

STMicroelectronics says that the company’s Orly system-on-chip (SoC) is now powering a new generation of advanced set-top ...