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| Engineering articles |
Ripple effect: water snails offer new propulsion possibilities
A UC San Diego engineer has revealed a new mode of propulsion based on how water snails create ripples of slime to crawl upside down beneath the surface.
Promising new material that could improve gas mileage
With gasoline at high prices, it's disheartening to know that up to three-quarters of the potential energy you are paying for is wasted. A good deal of it goes right out the tailpipe instead of powering your car.
Single-pixel camera has multiple futures
A terahertz version of the single-pixel camera developed by Rice University researchers could lead to breakthrough technologies in security, telecom, signal processing and medicine.
Models predict the remaining life of mechanical, electronic equipment
New research at the Georgia Institute of Technology could soon make predicting the degradation and remaining useful life of mechanical and electronic equipment easier and more accurate, while significantly improving maintenance operations and spare parts logistics.
Star quest knowledge provides new view of ourselves
In a basement laboratory at the Harvard-Smithsonian Center for Astrophysics (CfA), surrounded by instruments built to detect the universe's distant secrets, sits a machine that will help us look not outward to the stars, but inward at our own bodies.
Tiny solar cells built to power microscopic machines
Some of the tiniest solar cells ever built have been successfully tested as a power source for even tinier microscopic machines. An article in the inaugural issue of the Journal of Renewable and Sustainable Energy (JRSE), published by the American Institute of Physics (AIP), describes an inch-long array of 20 of these cells -- each one about a quarter the size of a lowercase "o" in a standard 12-point font.
The photon force is with us: harnessing light to drive nanomachines
Science fiction writers have long envisioned sailing a spacecraft by the optical force of the sun's light. But, the forces of sunlight are too weak to fill even the oversized sails that have been tried. Now a team led by researchers at the Yale School of Engineering & Applied Science has shown that the force of light indeed can be harnessed to drive machines - when the process is scaled to nano-proportions.
Boosting the power of solar cells
New ways of squeezing out greater efficiency from solar photovoltaic cells are emerging from computer simulations and lab tests conducted by a team of physicists and engineers at MIT.
New holographic method could be used for lab-on-a-chip technologies
Researchers at Purdue University have developed a technique that uses a laser and holograms to precisely position numerous tiny particles within seconds, representing a potential new tool to analyze biological samples or create devices using nanoassembly.
Collaboration of soloists makes the best science
For the success of a major research university, which is better: large, well-funded laboratory empires with many investigators working toward the same end, or the individual scientist toiling alone in his own laboratory or at his own desk?
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Spotting the next great music superstar
For every rock star who hits it big, there are thousands of artists who never make it out of their own back yards. Before Madonna was "Madonna," she was a local success in New York clubs. Until Britney Spears became a global pop superstar, she performed in dance revues in her native Louisiana.
The clear future of electronics
A group of scientists at Korea Advanced Institute of Science and Technology (KAIST) has fabricated a working computer chip that is almost completely clear -- the first of its kind. The new technology, called transparent resistive random access memory (TRRAM), is described in this week's issue of the journal Applied Physics Letters, which is published by the American Institute of Physics.
Wind, water and sun beat biofuels, nuclear and coal for clean energy
The best ways to improve energy security, mitigate global warming and reduce the number of deaths caused by air pollution are blowing in the wind and rippling in the water, not growing on prairies or glowing inside nuclear power plants, says Mark Z. Jacobson, a professor of civil and environmental engineering at Stanford.
European first as Alice achieves energy recovery
UK scientists have successfully demonstrated energy recovery on the ALICE advanced particle accelerator design, potentially paving the way for new accelerators using a fraction of the energy required under conventional methods.
Enhancing solar cells with nanoparticles
Deriving plentiful electricity from sunlight at a modest cost is a challenge with immense implications for energy, technology, and climate policy. A paper in a special energy issue of Optics Express, the Optical Society's (OSA) open-access journal, describes a relatively new approach to solar cells: lacing them with nanoscopic metal particles. As the authors describe in the article, this approach has the potential to greatly improve the ability of solar cells to harvest light efficiently.
Researchers lay out vision for lighting revolution
A "revolution" in the way we illuminate our world is imminent, according to a paper published by two professors at Rensselaer Polytechnic Institute.
Why did the London Millennium Bridge 'wobble'?
On its opening day, the London Millennium Bridge experienced unexpected swaying due to the large number of people crossing it. A new study finally explains the Millennium Bridge 'wobble' by looking at how humans stay balanced while walking.
New use for human hair
Agricultural crop production relies on composted waste materials and byproducts, such as animal manure, municipal solid waste composts, and sewage sludge, as a necessary nutrient source. Studies have shown that human hair, a readily available waste generated from barbershops and hair salons, combined with additional compost, is an additional nutrient source for crops. Although human hair has become commercially available to crop producers in the past couple years, it has not been proven to be an exclusive source of nutrients in greenhouse container production.
Princeton researchers discover new type of laser
A Princeton-led team of researchers has discovered an entirely new mechanism for making common electronic materials emit laser beams. The finding could lead to lasers that operate more efficiently and at higher temperatures than existing devices, and find applications in environmental monitoring and medical diagnostics.
Broadband semiconductor laser shows potential to rival x-rays
The small size and low cost of the laser developed at Lehigh could enhance the accuracy of diagnostic techniques.
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| Quotes | Ive always wanted to be a scientist. That way, I could get a bunch of grants and do research into whether money can really buy happiness.
Kyannke.
Ive always wanted to be somebody, but I see now I should have been more specific.
Lily Tomlin |
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