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Xerox Inkless Printer

February 26, 2007

Xerox is developing a new printing technology which does not require ink of any kind. The new technology includes reusable paper that can be printed and erased dozens of times and has the potential to revolutionize printing.

The Rise of the Machines

October 13, 2008

“Somehow the genius quants — the best and brightest geeks Wall Street firms could buy — fed $1 trillion in subprime mortgage debt into their supercomputers, added some derivatives, massaged the arrangements with computer algorithms and — poof! — created $62 trillion in imaginary wealth,” says Richard Dooling.

“It’s not much of a stretch to imagine that all of that imaginary wealth is locked up somewhere inside the computers,… read more

Pentagon official says nanotechnology a high priority

April 20, 2004

The Pentagon expects advances in nanotechnology to impact every major weapons system and spent $315 million in fiscal 2004 on all nanotechnology research.

“Nanotechnology is one of the highest priority science and technology programs in the Defense Department,” said Clifford Lau, the senior science adviser in the Pentagon’s office of basic research.

Faster computer graphics

June 14, 2011

At right, a standard digital animation algorithm has simulated blur by sampling 256 different points on the wings of a moving butterfly for every pixel in the frame. At left is the image produced by sampling one point per pixel. In the center is the result of a new algorithm that samples only one point per pixel but infers the color values of the surrounding points. The result is very close to the 256-sample image but much easier to compute. (Credit: Jaakko Lehtinen)

MIT computer graphics researchers have developed a technique to simulate the photographic blur caused by moving objects (a computationally complex calculation) and the unfocused background of an image when the camera is focused on an object in the foreground.

The result could be more convincing video games and frames of digital video that take minutes rather than hours to render (motion doesn’t look fluid without some blur).

New Graphene Transistors Show Promise

March 6, 2007

Researchers at the University of Manchester have announced a single-electron transistor made out of graphene, a single sheet of graphite only one atom thick.

The researchers’ device, which is the first single-electron transistor to operate at room temperature, offers evidence that graphene is a promising alternative to silicon.

When most metals are shrunk to the size of quantum dots–about two to three nanometers wide–they become fragile and move… read more

‘Stamping’ self-assembling nanowires

October 20, 2008

Cornell researchers have created an innovative way to make and pattern nanoscale wires and other devices without requiring expensive lithographic tools; uses include computer memory and circuits, and quantum dots.

They coated gold nanoparticles suspended in water with a synthetic-DNA-based ligand that adheres to the metal and to water. Adjusting the DNA lengths can precisely control the distance between the particles to make them assemble into orderly superlattices, rather… read more

Plant Dispatched to Decontaminate Soil

April 27, 2004

Scientists have recruited plants in their fight against pollution, teaming the yellow lupine with modified bacteria that can break down organic chemicals. The combination is very effective at removing the toxic compound toluene from soil.

Communication helps target tumors

June 21, 2011

Mouse tumor imaging using targeted particles (credit: Liat Goldshaid et al.)

A new technique that uses nanoparticles and engineered proteins to broadcast the location of cancer in the body can deliver up to a 40-fold greater concentration of chemotherapy drugs to tumors than untargeted cancer treatments.

By designing a system of nanoparticle and protein components that can communicate with one another, biomedical engineer Geoffrey von Maltzahn of Flagship Ventures, an investment firm that helps launch new therapeutics and medical… read more

Blind Mice Can See, Thanks To Special Retinal Cells

July 15, 2010

Researchers at Johns Hopkins University’s Krieger School of Arts and Sciences have found that mice that didn’t have any rods and cones function could still see — and not just light, but also patterns and images — using intrinsically photosensitive Retinal Ganglion Cells (ipRGCs) — special photosensitive cells in the rodents’ retinas.

“Our study shows that even mice which were blind could form low-acuity yet measurable images, using ipRGCs,”… read more

From a Rapt Audience, a Call to Cool the Hype

March 13, 2007

Some scientists argue that some of Al Gore’s central points are exaggerated and erroneous. They are alarmed, some say, at what they call his alarmism.

A Better Network for Outer Space

October 27, 2008

Having designed the networking protocols that launched the Internet, Vint Cerf now wants to put the same kind of robust communications network in outer space.

Limits on Stem-Cell Research Re-emerge as a Political Issue

May 6, 2004

The debate over embryonic stem-cell research is re-emerging as an election issue as advocates for patients, including Nancy Reagan and 206 members of the House, press the president to loosen the limits on federal financing for the science.

Acoustic ‘cloaking device’ shields objects from sound

June 28, 2011

Acoustic Cloak

Scientists at Duke University have developed a cloaking device using metamaterials that makes objects invisible to sound waves.

The device uses stacked sheets of plastic with regular arrays of holes through them. The exact size and placement of the holes on each sheet, and the spacing between the sheets, has a predictable effect on incoming sound waves.

When placed on a flat surface, the stack redirects the waves such… read more

CPR: Mouth-to-Mouth Not Much Help

March 19, 2007

For adults who suddenly collapse, CPR is more effective if rescuers focus on chest compression over mouth-to-mouth ventilation.

By interrupting lifesaving chest compressions, mouth-to-mouth resuscitation may do more harm than good.

Hot nanotube sheets produce music on demand

November 3, 2008

Sheets made of carbon nanotubes behave like a loudspeaker when zapped with a varying electric current, say researchers at Tsinghua University in Beijing and could lead to new generation of cheap, flat speakers and even talking clothing.

The sound is generated by the thermoacoustic effect. The flexible nanotube sheets can be stretched or flexed into complicated shapes and still produce sound, and when fully stretched, the sheets are transparent… read more

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