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Researchers demonstrate source of blinking in quantum dots

November 8, 2011 4:16 am | News | Comments

Not all quantum dots are created equal, however—some, called simply "bad" quantum dots, blink in an irregular, unreliable way. This unreliability makes them problematic to work with. Researchers at Brookhaven National Laboratory's Center for Functional Nanomaterials have just figured out why bad dots are so unreliable.

Physicists identify room temperature quantum bits in semiconductor

November 2, 2011 11:45 am | News | Comments

A research team has recently discovered that silicon carbide, a commonly used semiconductor, contains crystal imperfections that can be controlled at a quantum mechanical level. This level of fine-tuning might allow developers to exploit quantum physics in this material at the nanoscale.

Unusual transistor made from natural cotton fibers

October 27, 2011 7:03 am | by Farhan Nuruzzaman | News | Comments

A new conformal coating technique developed at Cornell University has allowed researchers to apply gold nanoparticles and conductive polymer layers to the irregular topography of cotton fibers, creating a flexible, cotton-based transistor that is fully tunable.

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Rigid restraint improves dielectric performance, lifespan

October 25, 2011 12:47 pm | News | Comments

Just as a corset improves the appearance of its wearer by keeping everything tightly together, new rigidly constraining insulating materials invented at Duke University helps prevent the inevitable microscopic breakdown of the “soft” polymers often used in their construction.

Research finds gallium nitride is biocompatible

October 24, 2011 7:34 am | News | Comments

Researchers from North Carolina State University and Purdue University have shown that the semiconductor material gallium nitride (GaN) is non-toxic and is compatible with human cells—opening the door to the material's use in a variety of biomedical implant technologies.

Next-generation superlattice cameras add more 'color' to night vision

October 20, 2011 5:24 am | News | Comments

Recent breakthroughs have enabled scientists from the Northwestern University's Center for Quantum Devices to build cameras that can see more than one optical waveband or "color" in the dark. The semiconducting material used in the cameras—called type-II superlattices—can be tuned to absorb a wide range of infrared wavelengths, and now, a number of distinct infrared bands at the same time.

Nanoconfinement of organic solar cell material enhances conductivity

October 20, 2011 4:24 am | News | Comments

Sometimes a change in surroundings makes all the difference. That's the approach a group of researchers at Brookhaven National Laboratory has used to improve the electricity output of a semiconductor material used in polymer-based solar cells.

Computer memory innovation is nearly irresistible

October 11, 2011 5:53 am | News | Comments

Samsung and a team of researchers in Korea have modified resistance-change random access memory to withstand 1012 switching cycles, which is about 100 times greater than previously demonstrated RRAM technologies and 1,000,000 times better than commercial flash memory.

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Researchers report fastest graphene transistor yet

October 10, 2011 1:10 pm | News | Comments

Scientists from UCLA, led by Xiangfeng Duan, have built a graphene transistor that can perform on par with the speediest transistors, including those made with gallium arsenide and indium phosphide.

Graphene future could look like a Big Mac

October 10, 2011 3:41 am | News | Comments

Researchers in the UK have recently demonstrated what future electronic circuits made from graphene will probably look like. By sandwiching two sheets of graphene with another two-dimensional material, boron nitrate, the team created a graphene “Big Mac”.

Physicists to develop new architecture for electronic computing

October 5, 2011 1:41 pm | News | Comments

A nearly $2 million grant at the University of California, Riverside is being put to use in making silicon-based electronics obsolete. The new approach will depend on the development of a magnetologic gate, a transistor replacement that is built with graphene.

Physicists move one step closer to quantum computer

October 4, 2011 6:24 am | News | Comments

Rice University physicists have created a tiny "electron superhighway" that could one day be useful for building a quantum computer. The physicists described a new method for making a tiny device called a "quantum spin Hall topological insulator", which is one of the building blocks needed to create quantum particles that store and manipulate data.

Artificial leaf makes fuel from sunlight

September 30, 2011 3:41 am | by David L. Chandler, MIT News Office | News | Comments

Researchers led by Massachusetts Institute of Technology professor Daniel Nocera have produced something they're calling an "artificial leaf". Like living leaves, the device can turn the energy of sunlight directly into a chemical fuel that can be stored and used later as an energy source.

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Research improves performance of next-generation solar cell technology

September 19, 2011 6:00 am | by Liam Mitchell | News | Comments

Researchers from the University of Toronto, King Abdullah University of Science & Technology, and Pennsylvania State University have created the most efficient colloidal quantum dot (CQD) solar cell ever.

Laboratory simplifies manufacture of semiconducting bilayer graphene

September 16, 2011 5:36 am | News | Comments

By heating metal to make graphene, Rice University researchers may warm the hearts of high-tech electronics manufacturers. The lab of Rice chemist James Tour published two papers that advance the science of making high-quality, bilayer graphene. They show how to grow it on a functional substrate by first having it diffuse into a layer of nickel.

Researchers create nanoscale gold coating with largest-ever superlattice

September 16, 2011 5:19 am | News | Comments

Researchers at Rensselaer Polytechnic Institute developed a new method for creating a layer of gold nanoparticles that measures only billionths of a meter thick. These self-assembling gold coatings with features measuring less than 10 nm could hold important implications for nanoelectronics manufacturing.

New materials hold promise for better detection of nuclear weapons

September 12, 2011 8:42 am | News | Comments

Northwestern University scientists have developed new materials that can detect hard radiation, a very difficult thing to do. The method could lead to a handheld device for detecting nuclear weapons and materials, such as a "nuclear bomb in a suitcase" scenario.

Berkeley Lab researchers develop new infrared coating for windows

September 8, 2011 10:13 am | News | Comments

Lawrence Berkeley National Laboratory researchers at the Molecular Foundry have unveiled a semiconductor nanocrystal coating material capable of controlling heat from the sun while remaining transparent. This system, the first to selectively control the amount of near infrared radiation transmitted, could add a critical energy-saving dimension to "smart window" coatings.

3M, IBM to develop new types of adhesive to create 3D semiconductors

September 8, 2011 9:24 am | News | Comments

3M and IBM announced that the two companies plan to jointly develop the first adhesives that can be used to package semiconductors into densely stacked silicon "towers." The companies are aiming to create a new class of materials, which will make it possible to build, for the first time, commercial microprocessors composed of layers of up to 100 separate chips.

Manufacturing method paves way for quantum dot-based LEDs

September 6, 2011 6:55 am | News | Comments

University of Florida researchers may help resolve the public debate over America's future light source of choice: Edison's incandescent bulb or the more energy efficient compact fluorescent lamp. It could be neither. Instead, America's future lighting needs may be supplied by a new breed of light-emitting diode, or LED, that conjures light from the invisible world of quantum dots.

Photon loops may be key to optical photonics

August 22, 2011 12:25 pm | News | Comments

Fiber optic technology is well-established for long-distance data transmission, but efforts to use photons in microcircuits have been hampered the tendency for materials defects to deflect the signal. A new type of circuit component now allows photons to find their around these defects.

Microspheres become platform for every knot imaginable

August 19, 2011 7:40 am | News | Comments

A net of fine lines surrounding tiny silica microspheres confined in thin liquid crystal layers is now a test bed for creating any kind of microscopic knot. The finding by researchers in Germany and Slovenia could have important implications because the knotting of DNA molecules is crucial to the way genes function.

Reports: Hewlett-Packard to spin off PC business

August 18, 2011 11:07 am | News | Comments

Hewlett-Packard plans to spin off its personal computer division into a separate business, according to unnamed sources in major news outlets. It marks a reversal from HP's previous stance, in March, when it denied this rumor.

Fast fab: Organic semiconductors for flexible displays

August 17, 2011 2:32 pm | by Louis Bergeron | News | Comments

A team led by researchers at Stanford and Harvard universities has not only created a new material for high-speed organic semiconductors, it has come up with a new approach that can take months, even years, off the development timeline.

X-ray lens peers deeper into the nano realm

August 15, 2011 12:07 pm | by Louise Lerner | News | Comments

A team of researchers Argonne National Laboratory has built a multi-thousand-layer lens that focuses high-energy x-rays so tightly it can detect objects as small as 15 nm in size and is in principle capable of focusing to well below 10 nm.

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