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Self-cooling observed in graphene elctronics

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TechAndComputer (Apr. 5, 2011) — With the first observation of thermoelectric effects at graphene contacts, University of Illinois researchers found that graphene transistors have a nanoscale cooling effect that reduces their temperature. Researchers found that thermoelectric cooling effects can be stronger at graphene contacts than resistive heating, so graphene transistors are self-cooling.

Led by mechanical science and engineering professor...

TechAndComputer (Apr. 5, 2011) — With the first observation of thermoelectric effects at graphene contacts, University of Illinois researchers found that graphene transistors have a nanoscale cooling effect that reduces their temperature. Researchers found that thermoelectric cooling effects...

Templated growth technique produces graphene nanoribbons with metallic properties

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TechAndComputer (Mar. 22, 2011) — A new "templated growth" technique for fabricating nanoribbons of epitaxial graphene has produced structures just 15 to 40 nanometers wide that conduct current with almost no resistance. These structures could address the challenge of connecting graphene devices made with conventional architectures -- and set the stage for a new generation of devices that take advantage of the quantum properties of electrons.

"We...

TechAndComputer (Mar. 22, 2011) — A new...

Room-temperature spintronic computers coming soon? Silicon spin transistors heat up and spins last longer

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TechAndComputer (Mar. 16, 2011) — University of Utah researchers built "spintronic" transistors and used them to align the magnetic "spins" of electrons for a record period of time in silicon chips at room temperature. The study is a step toward computers, phones and other spintronic devices that are faster and use less energy than their electronic counterparts.

"Electronic devices mostly use the charge of the electrons -- a negative charge that...

TechAndComputer (Mar. 16, 2011) —...

Physicists measure current-induced torque in nonvolatile magnetic memory devices

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TechAndComputer (Mar. 14, 2011) — Tomorrow's nonvolatile memory devices -- computer memory that can retain stored information even when not powered -- will profoundly change electronics, and Cornell University researchers have discovered a new way of measuring and optimizing their performance.

Using a very fast oscilloscope, researchers led by Dan Ralph, the Horace White Professor of Physics, and Robert Buhrman, the J.E. Sweet Professor of...

TechAndComputer (Mar. 14, 2011) — Tomorrow's...

World's smallest magnetic field sensor: Researchers explore using organic molecules as electronic components

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TechAndComputer (Feb. 22, 2011) — Further development of modern information technology requires computer capacities of increased efficiency at reasonable costs. In the past, integration density of the relevant electronic components was increased constantly. In continuation of this strategy, future components will have to reach the size of individual molecules. Researchers from the KIT Center for Functional Nanostructures (CFN) and IPCMS have now...

TechAndComputer (Feb. 22, 2011) — Further...