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Nanotechnology / Physics news 1234

Physicists create first superconductor hybrid nanoscale heat transistor

July 25, 2007 | User rating: 4.6 / 5 after 50 vote(s) | No comments yet

Low temperature research has been at the forefront of cooling applications for quite some time. One project, a nanoscale heat transistor, has been built in Finland in cooperation with an Italian researcher at the Helsinki ...


Indium arsenide may provide clues to quantum information processing

July 23, 2007 | User rating: 4.6 / 5 after 31 vote(s) | No comments yet

“We’re not saying we’ve built a quantum computer,” Andreas Fuhrer tells PhysOrg.com, “but this is an important first step towards spin manipulation via the spin-orbit interaction.”


Understanding light at the nanoscale: a nano-sized double-slit experiment

July 17, 2007 | User rating: 4.4 / 5 after 62 vote(s) | No comments yet

Before nanotechnology can reach its full potential, researchers must understand the way things work on the nanoscale—which is often very different from the macroscopic world. One of these areas is light, and ...


'Blown Bubble' Method Disperses Nanostructures Over Large Areas

June 22, 2007 | User rating: 4.7 / 5 after 35 vote(s) | No comments yet

Researchers from Harvard University and the University of Hawaii at Manoa recently announced a new method for organizing nanowires and carbon nanotubes across large areas: blowing bubbles.


Researchers Suggest Quantum Dots as Media for Teleportation

June 21, 2007 | User rating: 4.3 / 5 after 135 vote(s) | No comments yet

According to recent research, tiny clusters of atoms known as quantum dots may be excellent media for quantum teleportation, a physics phenomenon in which information – in the form of a quantum state, a very specific mathematical ...


Scientists Hand-Make Devices Smaller than 10 Nanometers

April 27, 2007 | User rating: 4.4 / 5 after 41 vote(s) | No comments yet

A research team from the University of Pennsylvania has used an electron beam to hand-carve ultra-small metal structures and devices, all with dimensions below 10 nanometers, from very thin metal sheets. Their ...


Nanobubbles exist, and are more stable than previously thought

April 02, 2007 | User rating: 4 / 5 after 42 vote(s) | No comments yet

When William Ducker, a professor at the University of Melbourne in Australia started experiments on so-called nanobubbles that form as a gas state on the boundary between liquid and gas, he fully expected to ...


Magnetic particles act as ink in new printer

March 16, 2007 | User rating: 4.3 / 5 after 44 vote(s) | No comments yet

By using a laser beam to focus and push particles against a substrate, scientist Lars Helseth of Nanyang Technological University in Singapore has designed and built a unique type of colloidal printer. Taking ...


For low-cost DNA nanostructures, recycle sticky ends

March 02, 2007 | User rating: 4.2 / 5 after 32 vote(s) | No comments yet

Scientists from Duke University have recently demonstrated a new method for assembling large, low-cost DNA nanostructures, in part by reusing the “sticky-ends,” the broken DNA strands used to connect the nanostructures. ...


New Organic Gold-Nanoparticle Memory Device

February 14, 2007 | User rating: 4 / 5 after 47 vote(s) | No comments yet

Researchers have developed a new memory device that uses gold nanoparticles and the organic semiconducting compound pentacene. This novel pairing is a key step forward in the drive to develop organic "plastic" ...


Telescoping nanotubes offer new option for nonvolatile memory

February 06, 2007 | User rating: 4.5 / 5 after 44 vote(s) | No comments yet

In the midst of a widespread and potentially highly lucrative search for next-generation nonvolatile memory, scientists from the University of California have put to use an interesting characteristic of carbon ...


Super honeycomb shows more potential for carbon nanotubes

January 19, 2007 | User rating: 4.4 / 5 after 39 vote(s) | No comments yet

The hexagonal network structure makes these nanotubes look a bit like a honeycomb—or, when stretched a bit, like a hammock or fish net. In fact, the stretchiness of these 20-nm-long carbon nanotubes enables ...


Finding Memory in Nonlinear Ionization

January 08, 2007 | User rating: 3.9 / 5 after 23 vote(s) | No comments yet

David Rayner and his colleagues at the National Research Council (NRC) of Canada in Ottawa have shown that when transparent solids, such as glass, are ionized with short intense laser pulses the material is subtly changed.


How to Shrink a Carbon Nanotube

November 30, 2006 | User rating: 4.3 / 5 after 125 vote(s) | No comments yet

A research group has devised a way to control the diameter of a carbon nanotube – down to essentially zero nanometers. This useful new ability, designed by scientists from the University of California at Berkeley ...


Tiniest modified opals ready to manipulate light flow as photonic crystals

November 29, 2006 | User rating: 4.1 / 5 after 47 vote(s) | No comments yet

One of the most rapidly advancing areas of applied nanotechnology involves photonic crystals. With their ability to control light propagation, photonic crystals are predicted to replace other methods for devices ...


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