New findings from a NASA-funded instrument have resolved a decades-old puzzle about a fog of low-energy x-rays observed over the entire sky. Thanks to refurbished detectors first flown on a NASA sounding rocket in the 1970s, astronomers have now confirmed the long-held suspicion that much of this glow stems from a region of million-degree interstellar plasma known as the local hot bubble, or LHB.
What if computer screens had glasses instead of...
An affordable digital reading system invented by...
The medical practice of Dr. Robert Howe, a reproductive endocrinologist in Massachusetts, introduced him to how computerized tomography could make precise 3-D images of body parts. As a student of music history, he realized the same technology could help him study delicate musical instruments from the past. With the help of engineers, these rare instruments are now being both imaged and printed printed in 3-D.
The discovery of water vapor in the atmospheres of three exoplanets includes the most precise measurement of any chemical in a planet outside the solar system, and has major implications for planet formation and the search for water on Earth-like habitable exoplanets in future. These results show just how challenging it could be to detect water on Earth-like exoplanets in our search for potential life elsewhere.
In late June 2013, an exceptional binary containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed. The pulsar's radio beacon vanished, while at the same time the system brightened fivefold in gamma rays, the most powerful form of light, according to measurements by NASA's Fermi Gamma-ray Space Telescope. It was as if someone flipped a switch on the pulsar.
Janelia Research Campus experts have built a new computational method that can essentially automate much of the time-consuming process of reconstructing an animal's developmental building plan cell by cell. Using image data obtaining using a sophisticated form of light sheet microscopy, the tool can track the movement of cells in an animal’s body in 3-D.
Researchers at the Univ. of Illinois at Urbana-Champaign have demonstrated that an array of novel gold, pillar-bowtie nanoantennas (pBNAs) can be used like traditional photographic film to record light for distances that are much smaller than the wavelength of light (for example, distances less than ~600 nm for red light). A standard optical microscope acts as a “nanocamera” whereas the pBNAs are the analogous film.
A heat-sensing camera designed at Arizona State University has provided data to create the most detailed global map yet made of Martian surface properties. THEMIS, the nine-band visual and infrared camera on NASA’s Mars Odyssey orbiter, was used to create this map, which is now available online. And citizen scientists are invited to help make it even better.
Developmental processes in all living organisms are controlled by genes. At the same time there is a continuous metabolism taking place. Recent research in Austria has analyzed this interaction in flowering plants. For the first time, changes in metabolism were linked to 3-D morphometric data using micro-computed tomography (micro-CT) for the first time.
Lighting is crucial to the art of photography, but they are cumbersome and difficult to use properly. Researchers at Massachusetts Institute of Technology and Cornell Univ. aim to change that by providing photographers with squadrons of small, light-equipped autonomous robots that automatically assume the positions necessary to produce lighting effects specified through a simple, intuitive, camera-mounted interface.
The South Korean display panel maker LG has developed an 18-inch flexible display that can be rolled into the shape of a thin cylinder, a step toward making a large display for flexible TVs. Although not as sharp as the latest ultra-high definition flat screens, the new display has a resolution of 1200 pixels by 810 pixels and maintains its function when it is rolled up.
Police in New York City are concerned that the increasing popularity of drones in such a tightly packed metropolis could carry major risks, even becoming a potential tool for terrorists to conduct surveillance or carry out attacks. Even though it's illegal to fly the devices just about anywhere in New York City without permission, recent incidents and breathtaking videos of Manhattan suggest that the restrictions are being widely flouted.
A team in the U.K. has found that by sandwiching a 7-nm thick layer of a phase change material between two layers of a transparent electrode they could use a tiny current to “draw” images within the sandwich “stack”. The discovery could make it possible to create pixels just a few hundred nanometers across and pave the way for extremely high-resolution and low-energy thin, flexible displays.
Too cool and faint, many objects in the universe are impossible to detect with visible light. Now a Northwestern Univ. team has refined a new technology that could make these colder objects more visible, paving the way for enhanced exploration of deep space. The new technology uses a type II superlattice material called indium arsenide/indium arsenide antimonide (InAs/InAsSb).
A Brown Univ. group has developed a wireless virtual reality system to study a phenomenon that scientists don’t yet understand: How pedestrians interact with each other and how those individual behaviors, in turn, generate patterns of crowd movement. The system, which uses motion capture technology can immerse up to four people in a carefully controlled, realistic virtual crowd.
Researchers in Korea have been working to perfect their two-sided, touchable, transparent display technology called TransWall. Featuring an incorporated surface transducer, TransWall provides audio and vibrotactile feedback to users, enabling people to see, hear, or even touch other people through the wall while enjoying gaming and interpersonal communication.
Scientists at the Massachusetts Institute of Technology are developing an audio reading device to be worn on the index finger of people whose vision is impaired, giving them affordable and immediate access to printed words. The so-called FingerReader, a prototype produced by a 3-D printer, fits like a ring on the user's finger, and is equipped with a small camera that scans text.
An observatory run by the Univ. of Utah has found a “hotspot” beneath the Big Dipper emitting a disproportionate number of the highest-energy cosmic rays. The discovery moves physics another step toward identifying the mysterious sources of the most energetic particles in the universe.
Located deep in the human gut, the small intestine is not easy to examine: X-rays, MRIs and ultrasound images each suffer limitations. Univ. at Buffalo researchers are developing a new imaging technique involving nanoparticles suspended in liquid to form “nanojuice” that patients would drink. Upon reaching the small intestine, doctors would strike the nanoparticles with laser light, providing a non-invasive, real-time view of the organ.
Obtaining evidence of genetic changes to make a cancer diagnosis usually requires a biopsy, which can be problematic for sensitive regions of the body such as the lungs. Based on recent review of patients with lung cancer, researchers have found that scanning the tumor cells with quantitative computed tomography based texture analysis (QTA) determines (with 90% accuracy) whether the patient's tumor had a cancer-causing gene mutation.
New research at UC Berkeley has found that people are better and faster at navigating tactile technology when using both hands and several fingers. Moreover, blind people in the study outmaneuvered their sighted counterparts, perhaps because they’ve developed superior cognitive strategies for finding their way around. These insights are useful as more media companies are implementing tactile interfaces.
Systems that automatically read automobile license plates have the potential to save police investigative time and increase safety, but law enforcement officials must address issues related to staffing, compatibility and privacy before the technology can reach its full potential, according to a new RAND Corp. report.
Many enzymes work only with a co-trainer, of sorts. Scientists in Germany have shown what this kind of cooperation looks like in detail using a novel methodology applied to the heat shock protein Hsp90, which controls the proper folding of other proteins. Together with a second molecule, the co-chaperone P23, it splits the energy source ATP to yield the energy it needs to do its work.
Hawaii's Board of Land and Natural Resources has approved a sublease for a $1.3 billion telescope that would be one of the world's largest, but the approval is on hold until the board hears objections in a separate review process. The board met Friday to discuss issues raised previously about a plan to build the Thirty Meter Telescope on the summit of the Mauna Kea volcano on Hawaii's Big Island.
Using high speed video, transmission electron microscopy, spectrometry, energy dispersive x-ray spectroscopy, and computer modeling, a Univ. of California, Berkeley graduate student has unraveled the mystery of the disco clams flashing “lips”. Most people assumed the glowing mantle was the result of bio-luminescence, but Lindsey Dougherty has found it is caused by something else entirely.
Plasmon tunneling is a quantum-mechanical effect where electrons rapidly oscillate across very closely-spaced metal structures. Using a Titan scanning/transmission electron microscope developed and made by FEI Company, the scientists were able to not only observe this new phenomenon directly, but also control the frequency of the tunneling currents by placing single layers of different molecules between the closely-spaced metal particles.
Oak Ridge National Laboratory has launched the Institute for Functional Imaging of Materials to accelerate discovery, design and deployment of new materials. The institute will meld world-class capabilities in imaging, high-performance computing, materials science and other scientific disciplines to probe materials.
- Page 1