An experimental, unmanned aircraft developed for the U.S. Air Force went hypersonic during a test off the Southern California coast, traveling at more than 3,000 mph, the Air Force said Friday. The X-51A WaveRider flew for more than three minutes under power from its exotic scramjet engine and hit a speed of Mach 5.1, or more than five times the speed of sound.
An impromptu spacewalk over the weekend seems to have fixed a big ammonia leak at the...
Researchers in Europe have developed a new experimental system to gain accurate...
Nearly everyone is familiar with the polytetrafluoroethylene (PTFE), otherwise known as Teflon. Famous for being “non-sticky” and water repellent, PTFE is a dry lubricant used on machine components everywhere. Recently, engineering researchers at the University of Arkansas found a way to make the polymer even less adhesive.
A Colorado company developing a spaceship to take astronauts to the International Space Station is having elements of its spacecraft undergo landing-related tests at NASA facilities in Virginia and California. NASA wants private firms to ferry astronauts into low-Earth orbit so it can focus on deep-space exploration and send crews to a nearby asteroid and eventually Mars.
With the hand of nature trained on a beaker of chemical fluid, the most delicate flower structures have been formed in a Harvard University laboratory—and not at the scale of inches, but microns. These minuscule sculptures, curved and delicate, don't resemble the cubic or jagged forms normally associated with crystals, though that's what they are. Rather, fields of flowers seem to bloom from the surface of a submerged glass slide.
Frustration led to revelation when Rice University scientists determined how graphene might be made useful for high-capacity batteries. Calculations by the Rice laboratory of theoretical physicist Boris Yakobson found a graphene-boron anode should be able to hold a lot of lithium and perform at a proper voltage for use in lithium-ion batteries.
University of Toronto engineering researchers, working with colleagues from Carnegie Mellon University, have published new insights into how materials transfer heat, which could lead eventually to smaller, more powerful electronic devices.
Engineering researchers at the University of Michigan have demonstrated a paradigm-shifting "polariton" laser that's fueled not by light, but by electricity. Polaritons are particles that are part light, and part matter. The new device requires at least 1,000 times less energy to operate, compared with a conventional laser.
Injectable nanoparticles developed at Massachusetts Institute of Technology may someday eliminate the need for patients with Type 1 diabetes to constantly monitor their blood-sugar levels and inject themselves with insulin. The nanoparticles were designed to sense glucose levels in the body and respond by secreting the appropriate amount of insulin.
Inspired by the structure of moth eyes, researchers at North Carolina State University have developed nanostructures that limit reflection at the interfaces where two thin films meet, suppressing the “thin-film interference” phenomenon commonly observed in nature. This can potentially improve the efficiency of thin-film solar cells and other optoelectronic devices.
University of Illinois English professor Ted Underwood recently wrapped up a research project involving more than 4,200 books. Since that work revealed dramatic shifts in the English language between the 18th and 19th centuries, he’s now expanding his research to include more than 470,000 books—almost every English language book written during that era and preserved in a university library.
Among its many talents, silver is an antibiotic. Titanium dioxide is known to glom on to certain heavy metals and pollutants. Other materials do the same for salt. In recent years, environmental engineers have sought to disinfect, depollute, and desalinate contaminated water using nanoscale particles of these active materials. Engineers call them nanoscavengers.
Engineers combine layers of flexible materials into pressure sensors to create a wearable heart monitor thinner than a dollar bill. The skin-like device could one day provide doctors with a safer way to check the condition of a patient's heart.
The production of biofuels from lignocellulosic biomass would benefit on several levels if carried out at temperatures between 65 and 70 C. Researchers with the Energy Biosciences Institute have employed a promising technique for improving the ability of enzymes that break cellulose down into fermentable sugars to operate in this temperature range.
Massachusetts Institute of Technology engineers have transformed bacterial cells into living calculators that can compute logarithms, divide, and take square roots, using three or fewer genetic parts. Inspired by how analog electronic circuits function, the researchers created synthetic computation circuits by combining existing genetic “parts,” or engineered genes, in novel ways.
Using a powerful combination of microanalytic techniques that simultaneously image photoelectric current and chemical reaction rates across a surface on a micrometer scale, researchers at NIST have shed new light on what may become a cost-effective way to generate hydrogen gas directly from water and sunlight.
Detecting greenhouse gases in the atmosphere could soon become far easier with the help of an innovative technique developed by a team at NIST, where scientists have overcome an issue preventing the effective use of lasers to rapidly scan samples. The team says the technique also could work for other jobs that require gas detection, including the search for hidden explosives and monitoring chemical processes in industry and the environment.
The way in which radio spectrum is currently allocated to different wireless technologies can lead to gross inefficiencies. Cognitive radio serves as a solution. Different proposals for cognitive radio place different emphases on hardware and software, but the chief component of many hardware approaches is a bank of filters that can isolate any frequency in a wide band. Researchers have developed a new method for manufacturing such filters.
The atom-sized world of carbon nanotubes holds great promise for a future demanding smaller and faster electronic components. The challenge has been figuring out how to incorporate all of these nanotubes' great properties into useful electronic devices. A new discovery by four scientists at the University of California, Riverside has brought us closer to the goal.
A Wayne State University researcher understands that the three most important things about real estate also apply to small ground robotic vehicles: location, location, location. A recently published paper describes the development of a technique called LOBOT that provides accurate, real-time, 3D positions in both indoor and outdoor environments.
A new design tool interprets hand gestures, enabling designers and artists to create and modify 3D shapes using only their hands as a "natural user interface" instead of keyboard and mouse. The tool, called Shape-It-Up, uses specialized computer algorithms and a depth-sensing camera to observe and interpret hand movements and gestures.
The California Energy Commission has awarded $1.7 million to a partnership between Lawrence Livermore National Laboratory and Cool Earth Solar Inc. to conduct a community-scale renewable energy integration demonstration project at the Livermore Valley Open Campus.
It’s a familiar scenario—a patient receives a medical implant and days later, the body attacks the artificial valve or device, causing complications to an already compromised system. Expensive medical devices and surgeries often are thwarted by the body’s natural response to attack something in the tissue that appears foreign. Now, University of Washington engineers have demonstrated in mice a way to prevent this sort of response.
The Navy will make its first attempt to launch an unmanned aircraft the size of a fighter jet from an aircraft carrier on Tuesday, marking a significant step toward the possibility of expanded drone use in future conflicts. The X-47B can reach an altitude of more than 40,000 feet, has a range of more than 2,100 nautical miles and can reach high subsonic speeds.
Researchers from North Carolina State University have developed a software algorithm that detects and isolates cyberattacks on networked control systems—which are used to coordinate transportation, power, and other infrastructure across the United States.
General Motors says a new supercomputer data storage center and efforts to write its own software are paying off. The company formally opened a giant data center on Monday in the Detroit suburb of Warren, Mich. The Detroit automaker says the changes are examples of how it's moving faster to cut costs and serve customers better.
One of the most promising new kinds of battery to power electric cars is called a lithium-air battery. But progress has been slow. Researchers have used transmission electron microscope (TEM) imaging to observe, at a molecular level, what goes on during a reaction called oxygen evolution as lithium-air batteries charge; this reaction is thought to be a bottleneck limiting further improvements to these batteries.