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Molybdenum disulfide encapsulated between layers of boron nitride. Courtesy of Gwan-Hyoung Lee/Yonsei University

Two-dimensional semiconductor comes clean

April 27, 2015 2:39 pm | by Holly Evarts, Columbia University | News | Comments

In 2013 James Hone, Wang Fong-Jen Professor of Mechanical Engineering at Columbia Engineering, and colleagues at Columbia demonstrated that they could dramatically improve the performance of graphene—highly conducting two-dimensional (2-D) carbon—by encapsulating it in boron nitride (BN), an insulating material with a similar layered structure.

Lightweight membrane can significantly reduce in-flight aircraft noise

April 27, 2015 2:29 pm | by North Carolina State University | News | Comments

Riding in a helicopter or airplane can be a noisy experience for passengers. But researchers...

Negative electronic compressibility: More is less in novel material

April 27, 2015 2:19 pm | by Boston College | News | Comments

Add water to a half-filled cup and the water level rises. This everyday experience reflects a...

Thinner capsules yield faster implosions

April 27, 2015 1:03 pm | by Charlie Osolin, Lawrence Livermore National Laboratory | News | Comments

In National Ignition Facility (NIF) inertial confinement fusion (ICF) experiments, the fusion...

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Researchers have captured the first 3-D video of a living algal embryo turning itself inside out, from a sphere to a mushroom shape and back again. The results could help unravel the mechanical processes at work during a similar process in animals, which

Upside down and inside out

April 27, 2015 12:53 pm | by University of Cambridge | News | Comments

Researchers have captured the first 3-D video of a living algal embryo turning itself inside out, from a sphere to a mushroom shape and back again. The results could help unravel the mechanical processes at work during a similar process in animals, which has been called the “most important time in your life.”

Juejun Hu and colleagues developed a way to embed very thin glass photonic devices such as flexible microdisk resonators and waveguides in alternating layers of soft and stiff polymers. Their flexible plastic device sustained being bent thousands of times

Bendable glass devices

April 27, 2015 12:43 pm | by Denis Paiste, MIT | News | Comments

A special class of glass materials known as chalcogenide glasses holds promise for speeding integration of photonic and electronic devices with functions as diverse as data transfer and chemical sensing. Juejun "JJ" Hu, the Merton C. Flemings Assistant Professor in Materials Science and Engineering, is finding new ways to deploy these glasses with surprising flexibility.

A microplasma is created by focusing intense laser pulses in air. Besides visible light, the microplasma emits electromagnetic pulses at terahertz frequencies that can be used to detect complex molecules, such as explosives and drugs. Courtesy of J. Adam

Generating broadband terahertz radiation from a microplasma in air

April 27, 2015 12:32 pm | by University of Rochester | News | Comments

Researchers have shown that a laser-generated microplasma in air can be used as a source of broadband terahertz radiation. They demonstrate that an approach for generating terahertz waves using intense laser pulses in air—first pioneered in 1993—can be done with much lower power lasers, a major challenge until now.

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Melting material in preparation for producing a new type of magnet

Ames Laboratory scientists create cheaper magnetic material for cars, wind turbines

April 27, 2015 12:21 pm | by Ames Laboratory | News | Comments

Karl A. Gschneidner and fellow scientists at Ames Laboratory have created a new magnetic alloy that is an alternative to traditional rare-earth permanent magnets. The new alloy—a potential replacement for high-performance permanent magnets found in automobile engines and wind turbines—eliminates the use of one of the scarcest and costliest rare earth elements, dysprosium, and instead uses cerium, the most abundant rare earth.

Northwestern scientists develop first liquid nanolaser

April 27, 2015 12:12 pm | by Megan Fellman, Northwestern University | News | Comments

Northwestern University scientists have developed the first liquid nanoscale laser. And it’s tunable in real time, meaning you can quickly and simply produce different colors, a unique and useful feature. The laser technology could lead to practical applications, such as a new form of a “lab on a chip” for medical diagnostics.

Flight is Greener than Driving

April 27, 2015 11:20 am | by Univ. of Michigan | News | Comments

Flying in a plane is not only safer than driving a car, it's also better for the environment. In follow-up research from last year, a study found that it takes twice as much energy to drive than to fly.

3-D Method Aids Study of Proteins

April 27, 2015 11:08 am | by Universitat Autònoma de Barcelona | News | Comments

Researchers have developed AGGRESCAN3D, a new computational method which allows studying the structure of folded globular proteins and their propensity for forming toxic protein aggregates.

Device Weighs, Images Individual Molecules

April 27, 2015 10:43 am | by Caltech | News | Comments

Building on their creation of the first-ever mechanical device that can measure the mass of individual molecules, one at a time, a team of scientists have created nanodevices that can also reveal their shape. Such information is crucial when trying to identify large protein molecules or complex assemblies of protein molecules.

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Research Reveals Structures of Gold Nanoparticles

April 27, 2015 10:31 am | by Univ. of Nebraska–Lincoln | News | Comments

They may deal in gold, atomic staples and electron volts rather than cement, support beams and kilowatt-hours, but chemists have drafted new nanoscale blueprints for low-energy structures capable of housing pharmaceuticals and oxygen atoms. New research has revealed four atomic arrangements of a gold nanoparticle cluster.

Controversial Telescope's Website Hacked

April 27, 2015 10:19 am | by Associated Press | News | Comments

An apparent cyberattack Sunday temporarily disrupted the main website of Thirty Meter Telescope, the organization trying to construct one of the world's largest telescopes near the summit of Mauna Kea on Hawaii's Big Island.

In-line Holography Sheds Light on Fiery Fuels

April 27, 2015 10:11 am | by Sandia National Laboratories | News | Comments

Transportation accidents, such as trucks crashing on a highway or rockets failing on a launch pad, can create catastrophic fires. It’s important to understand how burning droplets of fuel are generated and behave in those extreme cases, so researchers have developed 3-D measurement techniques based on digital in-line holography.

Power Outages Limit Tech’s Ability to Help People Connect After Quake

April 27, 2015 10:06 am | by Associated Press, Foster Klug | News | Comments

Power outages and communications problems have made life agonizing for the nearly 6 million Nepalese who live abroad— or about 22 percent of the population. They try desperately to reach loved ones through cellphones and global messaging apps, only to be met with silence or fleeting connections. The impoverished country’s communications have been shaken back to a different era.

Daniel Wilson Ph.D. researcher with UAV and drogue

Sky-high refuelling for UAVs

April 24, 2015 11:13 am | by Univ. of Sydney | News | Comments

A Univ. of Sydney researcher has designed and successfully tested a method for autonomously docking drones for refueling or recharging, in mid-air. He used a combination of precise measurements from an infrared camera, with GPS and inertial sensors to allow the sky-high docking to occur.

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JILA's strontium lattice atomic clock now performs better than ever because scientists literally "take the temperature" of the atoms' environment. Two specialized thermometers, calibrated by NIST researchers and visible in the center of the photo, are ins

Getting better all the time: JILA strontium atomic clock sets new records

April 24, 2015 10:57 am | by NIST | News | Comments

In another advance at the far frontiers of timekeeping by NIST researchers, the latest modification of a record-setting strontium atomic clock has achieved precision and stability levels that now mean the clock would neither gain nor lose one second in some 15 billion years—roughly the age of the universe.

A team of researchers using the Advanced Photon Source, above, a U.S. Department of Energy Office of Science User Facility at Argonne National Laboratory, demonstrated unparalleled sensitivity for measuring the distribution of trace elements in thicker sp

X-ray ptychography, fluorescence microscopy combo sheds new light on trace elements

April 24, 2015 10:44 am | by Angela Hardin, Argonne National Laboratory | News | Comments

Scientists have developed a new approach that combines ptychographic x-ray imaging and fluorescence microscopy to study the important role trace elements play in biological functions on hydrated cells. A team of researchers using the Advanced Photon Source demonstrated unparalleled sensitivity for measuring distribution of trace elements in thicker specimens at cryogenic temperatures, in this case at about 260 degrees below Fahrenheit.

The ‘gate sensor’ is so accurate that it can detect the charge of a single electron in less than one microsecond.

Ultra-sensitive sensor detects individual electrons

April 24, 2015 10:25 am | by SINC | News | Comments

A Spanish-led team of European researchers at the Univ. of Cambridge has created an electronic device so accurate that it can detect the charge of a single electron in less than one microsecond. It has been dubbed the "gate sensor" and could be applied in quantum computers of the future to read information stored in the charge or spin of a single electron.

A tetrahedron is a polyhedron composed of four triangular faces, three of which meet at each corner or vertex. It has six edges and four vertices.

Revolutionary discovery leads to invention of new "building blocks"

April 24, 2015 10:16 am | by Univ. of Akron | News | Comments

Macromolecular science will have to add a new giant molecule to its lexicon thanks to new and cutting-edge polymer research at The Univ. of Akron (UA). The research team led by Stephen Z.D. Cheng, professor at UA’s college of polymer science and polymer engineering, invented a new thinking pathway in the design and synthesis of macromolecules—the backbone of modern polymers—by creating an original class of giant tetrahedra.

James Webb Space Telescope's Pathfinder backplane test model is being prepared for its cryogenic test. Courtesy of NASA/Chris Gunn

Building Hubble's successor: Crucial Pathfinder test set up inside Chamber A

April 24, 2015 10:05 am | by Laura Betz, NASA's Goddard Space Flight Center | News | Comments

Inside NASA's giant thermal vacuum chamber, called Chamber A, at NASA's Johnson Space Center in Houston, the James Webb Space Telescope's Pathfinder backplane test model is being prepared for its cryogenic test. Previously used for manned spaceflight missions, this historic chamber is now filled with engineers and technicians preparing for a crucial test.

Heat makes electrons’ spin in magnetic superconductors

April 24, 2015 9:53 am | by Academy of Finland | News | Comments

Physicists have shown how heat can be exploited for controlling magnetic properties of matter. The finding helps in the development of more efficient mass memories. The result was published in Physical Review Letters. The international research group behind the breakthrough included Finnish researchers from the University of Jyväskylä and Aalto Univ.

Why Drafting Standards Play a Vital Role in Engineering Communication?

April 24, 2015 9:10 am | by Gaurang Trivedi, Engineering Consultant, TrueCADD | Articles | Comments

Engineering drawings remain at a core for any manufacturing organization as they communicate ideas that are expected to be transformed into a profitable product. Most companies begin developing engineering drawings using international drafting standards. However, with the course of time, and as the idea begins to shape up, there’s always a deviation from the standards followed.

Real-Time Process Measurement: A Sea Change in Manufacturing

April 24, 2015 8:44 am | by Chad Lieber, VP of Product Development, Prozess Technologies and Brian Sullivan, Director of Sales, Valin Corp. | Articles | Comments

In a world where most information is available in an instant, plant managers and engineers are continuously trying to find ways to improve the efficiency of processes along the manufacturing line. Analyzing these processes can be a difficult task. Until recently, days of laboratory work were often required to analyze any given sample segment or process in a manufacturing line.

Portable MRI could aid wounded soldiers in Third World

April 24, 2015 8:37 am | by Kevin Roark, Los Alamos National Laboratory | News | Comments

Scientists at Los Alamos National Laboratory are developing an ultra-low-field magnetic resonance imaging system that could be low-power and lightweight enough for forward deployment on the battlefield and to field hospitals in the world's poorest regions.

Study: Photosynthesis has unique isotopic signature

April 24, 2015 8:23 am | by Jade Boyd, Rice Univ. | News | Comments

Photosynthesis leaves behind a unique calling card, a chemical signature that is spelled out with stable oxygen isotopes, according to a new study in Science. The findings suggest that similar isotopic signatures could exist for many biological processes, including some that are difficult to observe with current tools.

Zeroing in on a silent killer

April 24, 2015 8:16 am | by Robert Perkins, Univ. of Southern California | News | Comments

One in three Americans has high blood pressure, a long-term constriction of arteries that can lead to coronary heart disease, heart failure and stroke. Using a sophisticated x-ray analysis, a U.S.-German team of scientists revealed the molecular structure of the angiotensin receptor AT1R, an important regulator for blood pressure in the human body.

Method takes quantum sensing to a new level

April 24, 2015 8:09 am | by Ron Walli, Oak Ridge National Laboratory | News | Comments

Thermal imaging, microscopy and ultra-trace sensing could take a quantum leap with a technique developed by researchers at Oak Ridge National Laboratory. Their work overcomes fundamental limitations of detection derived from the Heisenberg uncertainty principle, which states that the position and momentum of a particle cannot be measured with absolute precision.

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