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| Engineering articles |
Mit materials scientists tame tricky carbon nanotubes
Based on a new theory, MIT scientists may be able to manipulate carbon nanotubes -- one of the strongest known materials and one of the trickiest to work with -- without destroying their extraordinary electrical properties.
Project uses nanotubes to sniff out heavy metals
A team of researchers from ASU and Motorola Labs, the applied research arm of Motorola Inc., has developed sensors based on carbon nanotubes, microscopically small structures that possess excellent electronic properties. In early tests, the new devices detected the presence of heavy-metal ions in water down to partsper-trillion levels.
Engine on a chip promises to best the battery
MIT researchers are putting a tiny gas-turbine engine inside a silicon chip about the size of a quarter. The resulting device could run 10 times longer than a battery of the same weight can, powering laptops, cell phones, radios and other electronic devices.
Searching for an unfriendly face
As a soldier scans the crowded streets of Baghdad, so do another set of eyes. The second set, located on the soldier's rifle, belongs to a camera system that instantly recognizes the faces of potential threats.
Solar flares cause gps failures, possibly devastating for jets and distress calls
Strong solar flares cause Global Positioning System (GPS) receivers to fail, Cornell researchers have discovered. Because solar flares -- larger-than-normal radiation "burps" by the sun -- are generally unpredictable, such failures could be devastating for "safety-of-life" GPS operations -- such as navigating passenger jets, stabilizing floating oil rigs and locating mobile phone distress calls.
Mit's intelligent aircraft fly, cooperate autonomously
The U.S. military depends on small, unmanned aerial vehicles (UAVs) to perform such tasks as serving as "eyes in the sky" for battalion commanders planning maneuvers. While some of these UAVs can be easily carried in a backpack and launched by hand, they typically require a team of trained operators on the ground, and they perform only short-term tasks individually rather than sustained missions in coordinated groups. MIT researchers, in collaboration with Boeing's advanced research and development arm, Phantom Works, are working to change that.
Solar flares cause GPS failures, possibly devastating for jets and distress calls
Engineers at the National Institute of Standards and Technology (NIST) are developing a robotic system that may offer wheelchair-dependent people independent, powered mobility and the ability, depending on patient status, to move to and from beds, chairs and toilets without assistance.
Study shows internet to be resilient against terror attack
Researchers have simulated what would happen to Internet reliability in the United States if terrorists were able to knock out various physical components of the network.
Self alignment could simplify lCD manufacturing
A new technique for creating vertical alignment among liquid crystal molecules could allow development of less costly flexible displays and lead to a better understanding of the factors that govern operation of the popular liquid crystal display systems.
Study finds morphing eyewitness composites better at catching criminals
In the latest high profile investigation, an eyewitness composite sketch of the woman suspected of stealing a 10-day-old infant and slashing the mother's throat in Missouri was used. But prior research has found that facial composites of criminal suspects built by individual eyewitness accounts often produce poor likenesses of the actual perpetrators.
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Better battery search keeps going and going
Users of laptop computers, digital cameras or portable music players who are frustrated by frequently losing battery power can take heart: A better source of "juice" is in the works.
Single-pixel camera takes high-res images
For all their ease and convenience, there are few things more wasteful than digital cameras. They're loaded with pricy microprocessors that chew through batteries at a breakneck pace, crunching millions of numbers per second in order to throw out up to 99 percent of the information flowing through the lens.
Toward terahertz detectors on a single, conventional chip
Sensors and detectors that would work in the terahertz range of the electromagnetic spectrum promise a range of tantalizing properties, from precise identification of concealed weapons to the ability to distinguish between different tissue types for disease screening.
First quantum cryptographic data network demonstrated
A joint collaboration between Northwestern University and BBN Technologies of Cambridge, Mass., has led to the first demonstration of a truly quantum cryptographic data network. By integrating quantum noise protected data encryption (quantum data encryption or QDE for short) with Quantum Key Distribution (QKD), the researchers have developed a complete data communication system with extraordinary resilience to eavesdropping.
Grass holds promise for saving fuel, environment
At the University of Maryland's Wye Research and Education Center in Queenstown, Md., a boiler fueled entirely by grass heats the center's maintenance buildings and a greenhouse. This past winter, heat from the grass-fired boiler reduced fuel oil use by about 700 gallons.
Hybrid nanoparticles for multimodal medical imaging
Since X-rays were discovered more than a century ago, triggering a revolution in medical imaging, clinicians have sought more powerful ways to "see" into the human body.
Sending secret messages over public internet lines
A new technique sends secret messages under other people's noses so cleverly that it would impress James Bond--yet the procedure is so firmly rooted in the real world that it can be instantly used with existing equipment and infrastructure.
U. Of i. Robots go solar; new system could drastically reduce herbicide use
A solar-powered robot with 20/20 vision, on a search-and-destroy quest for weeds, will soon be moving up and down the crop rows at the experimental fields at the University of Illinois. What's more, this robot has the potential to control weeds while significantly reducing herbicide use.
How can we make nanoscale capacitators even smaller?
Researchers at UC Santa Barbara have discovered what limits our ability to reduce the size of capacitors, often the largest components in integrated circuits, down to the nanoscale. They have answered a 45-year old question: why is the capacitance in thin–film capacitors so much smaller than expected?
Nanoparticle assembly enters the fast lane
The speed of nanoparticle assembly can be accelerated with the assistance of the molecule that carries life's genetic instructions, DNA, a team of researchers at the U.S. Department of Energy's Brookhaven National Laboratory recently found.
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| Quotes | By convention!
cussed Tom airily.
Cmon Scully... Itll be a nice trip through the woods-Fox Mulder
But what ... is it good for?
Engineer at IBM, 1968, commenting on the microchip.
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