Tech and Computer

Tech and Computer news

 

 

Wed04032013

Last update06:42:42 PM GMT

Back Computer Science Spintronics

Spintronics

Physicists pave the way for graphene-based spin computer; First to achieve 'tunneling spin injection'

  • PDF
TechAndComputer (Oct. 17, 2010) — Physicists at the University of California, Riverside have taken an important step forward in developing a "spin computer" by successfully achieving "tunneling spin injection" into graphene.

An electron can be polarized to have a directional orientation, called "spin." This spin comes in two forms -- electrons are said to be either "spin up" or "spin down" -- and allows for more data storage than is possible with...

TechAndComputer (Oct. 17, 2010) — Physicists at the University of California, Riverside have taken an important step forward in developing a "spin computer" by successfully achieving "tunneling spin injection" into graphene.

An electron can be polarized to have a directional orientation...

Semiconductor could turn heat into computing power

  • PDF
TechAndComputer (Sep. 28, 2010) — Computers might one day recycle part of their own waste heat, using a material being studied by researchers at Ohio State University.

The material is a semiconductor called gallium manganese arsenide. In the early online edition of Nature Materials, researchers describe the detection of an effect that converts heat into a quantum mechanical phenomenon -- known as spin -- in a semiconductor.

Once developed, the...

TechAndComputer (Sep. 28, 2010) —...

New wave: Spin soliton could be a hit in cell phone communication

  • PDF
TechAndComputer (Sep. 16, 2010) — Researchers at the National Institute of Standards and Technology (NIST) have found theoretical evidence of a new way to generate the high-frequency waves used in modern communication devices such as cell phones. Their analysis, if supported by experimental evidence, could contribute to a new generation of wireless technology that would be more secure and resistant to interference than conventional devices.

The...

TechAndComputer (Sep. 16, 2010) —...

Researchers hear puzzling new physics from graphene quartet's quantum harmonies

  • PDF
TechAndComputer (Sep. 9, 2010) — Using a one-of-a-kind instrument designed and built at the National Institute of Standards and Technology (NIST), an international team of researchers have "unveiled" a quartet of graphene's electron states and discovered that electrons in graphene can split up into an unexpected and tantalizing set of energy levels when exposed to extremely low temperatures and extremely high magnetic fields. Published in this...

TechAndComputer (Sep. 9, 2010) — Using a...

Chemists, engineers achieve world record with high-speed graphene transistors

  • PDF
TechAndComputer (Sep. 3, 2010) — Graphene, a one-atom-thick layer of graphitic carbon, has great potential to make electronic devices such as radios, computers and phones faster and smaller. But its unique properties have also led to difficulties in integrating the material into such devices.

In a paper published Sept. 1 in the journal Nature, a group of UCLA researchers demonstrate how they have overcome some of these difficulties to fabricate...

TechAndComputer (Sep. 3, 2010) —...