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| Engineering articles |
Simple way to make near-perfect lenses
A new study from the University of Edinburgh and Pennsylvania State University suggests a smart solution to one of the biggest challenges facing the optics and electromagnetics sector – how to produce near-perfect lenses cheaply.
NIST atomic fountain clock gets much better with time
The world's best clock, NIST-F1, has been improved over the past few years and now measures time and frequency more than twice as accurately as it did in 1999 when first used as a national standard, physicists at the National Institute of Standards and Technology (NIST) report.
Keep cool to reduce friction
"Keep cool to reduce friction" might be the advice given to designers of nanoscale machinery by researchers who have just completed a study of factors influencing the formation of "water bridges" – capillary connections that can glue surfaces together, giving rise to friction forces.
World's first international real-time streaming of 4k digital cinema over gigabit ip optical fiber networks
In a demonstration that could foretell the future of videoconferencing, scientific visualization and digital cinema deployment, scientists from around the world meeting at iGrid 2005 in San Diego were treated to the world's first real-time, international transmission of super high-definition (SHD) 4K digital video.
Theorists to create optical circuit elements
Engineers at the University of Pennsylvania have theorized a means of shrinking electronics so they could be run using light instead of electricity. In the search to create faster, smaller and more energy-efficient electronics, researchers have looked elsewhere in the electromagnetic spectrum, which ranges from the low-frequency energy used in everyday electronics to the high-frequency energy of gamma rays, to pass the limits of conventional technology.
Safer, more efficient nuclear fuel
Purdue University nuclear engineers have developed an advanced nuclear fuel that could save millions of dollars annually by lasting longer and burning more efficiently than conventional fuels, and researchers also have created a mathematical model to further develop the technology.
Nanoscientists describe electron movement through molecules
Molecular electronics is the ultimate miniaturization of electronics. In this area of research, scientists have been studying the movement of electrons through individual molecules in an effort to understand how they might control and use the process in new technologies. Computers and thousands of other devices could become vastly faster, smaller and more reliable than conventional transistor-based (wire-based) electronics.
Simple idea could revolutionise safety devices
A simple but clever idea by a Bath engineer could revolutionise the way that safety devices across the world are constructed.
Fast, accurate detection of explosives on airport luggage possible
Fast, highly reliable detection of residues that could indicate the presence of explosives and other hazardous materials inside luggage is now possible with technology under development at Purdue University.
New battery technology helps stimulate nerves
With the help of new silicon-based compounds, scientists -- and patients -- are getting a significant new charge out of the tiny lithium batteries used in implantable devices to help treat nervous system and other disorders.
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Scientists study and learn to prevent nanoparticle "merging"
Researchers at the U.S. Department of Energy's Brookhaven National Laboratory have identified how billionth-of-a-meter sized metal particles — gold-atom clusters within carbon-atom shells — can mesh together to form larger particles and have also found a way to control this process.
New unidirectional molecular rotor
A University of Colorado at Boulder team has developed the first computer-generated model of a tiny, waterwheel-like molecular rotor that has been harnessed to rotate in one direction at different speeds in response to changes in the strength of an electrical field applied from the outside.
New unidirectional molecular rotor
A University of Colorado at Boulder team has developed the first computer-generated model of a tiny, waterwheel-like molecular rotor that has been harnessed to rotate in one direction at different speeds in response to changes in the strength of an electrical field applied from the outside.
Engineers pioneer affordable alternative energy-solar energy cells made of everyday plastic
With oil and gas prices in the United States hovering at an all-time high, interest in renewable energy alternatives is again heating up. Researchers at the UCLA Henry Samueli School of Engineering and Applied Science hope to meet the growing demand with a new and more affordable way to harness the sun's rays: using solar cell panels made out of everyday plastics.
Change in pitch tells all in this sonic gas analyzer
Penn State researchers have developed a prototype sonic gas analyzer that automatically and continuously tracks the concentration of a gas in an air/gas mixture based on changes in pitch.
Magnetic nanoparticles assembled into long chains
Chains of 1 million magnetic nanoparticles have been assembled and disassembled in a solution of suspended particles in a controlled way, scientists at the National Institute of Standards and Technology (NIST) report. Such particles and structures, once their properties are more fully understood and can be manipulated reliably, may be useful in applications such as medical imaging and information storage.
Sunny future for nanocrystal solar cells
Imagine a future in which the rooftops of residential homes and commercial buildings can be laminated with inexpensive, ultra-thin films of nano-sized semiconductors that will efficiently convert sunlight into electrical power and provide virtually all of our electricity needs. This future is a step closer to being realized, thanks to a scientific milestone achieved at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab).
Scientists build world's first single-molecule car
Rice University scientists have constructed the world's smallest car -- a single molecule "nanocar" that contains a chassis, axles and four buckyball wheels.
Students developing model of edible lunar vehicle
Imagine building a lunar vehicle and taking it 233,857 miles from the Earth to the moon only to forget to pack a lunch for the drive across the moon's landscape.
Better airplanes?
Titanium alloys are an important material in products like biomedical implants, golf clubs and aircraft because the crystalline materials within these alloys impart high strength, low density, corrosion resistance and biocompatibility. But titanium alloys will deform over time, even under relatively low stresses at room temperature.
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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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