15-Apr-2014 Wind tunnel tests support improved aerodynamic design of B61-12 bomb
Sandia National Laboratories has finished eight days of testing a full-scale mock unit representing the aerodynamic characteristics of the B61-12 gravity bomb in a wind tunnel.
The tests on the mock-up were done to establish the configuration that will deliver the necessary spin motion of the bomb during freefall and are an important milestone in the Life Extension Program to deliver a new version of the aging system, the B61-12.
11-Apr-2014 Simulation solves mystery of how liquid-crystal thin films disintegrate
Approximately four decades ago, theoreticians believed that only one of two mechanisms could explain rupture of liquid-crystal thin films. They also believed that these two mechanisms could not coexist. But 10 years ago experiments showed that these two mechanisms in many cases do coexist, according to Trung Nguyen of Oak Ridge National Laboratory, who ran unprecedented large-scale molecular dynamics simulations on Titan, America's fastest supercomputer, to model the beginnings of ruptures in thin films.
11-Apr-2014 Oak Ridge National Laboratory researchers contribute to prestigious climate report
Thomas Wilbanks and Benjamin Preston, both of the Climate Change Science Institute at Oak Ridge National Laboratory, are among the 309 coordinating lead authors of the Intergovernmental Panel on Climate Change's Working Group II report. The report, which was released in Japan on March 31, found that climate change isn't just a problem for future generations, but also impacts humans in the present day.
7-Apr-2014 Generations of supercomputers pin down primordial plasma
Brookhaven Lab's Lattice Gauge Theory Group hunts for equations to describe the early universe and the forces binding matter together. Their search spans generations of supercomputers and parallels studies of the primordial plasma discovered and explored at Brookhaven's Relativistic Heavy Ion Collider.
4-Apr-2014 Tracking the transition of early-universe quark soup to matter-as-we-know-it
By smashing together ordinary atomic nuclei at the Relativistic Heavy Ion Collider, scientists recreate the primordial soup of the early universe thousands of times per second. Using sophisticated detectors to track what happens as exotic particles emerge from the collision zone and 'freeze out' into more familiar forms of matter, they are turning up interesting details about how the transition takes place.
3-Apr-2014 'Smart window' material may make better batteries
Windows that darken to filter out sunlight in response to electric current, function much like batteries. Now, X-ray studies at SLAC provide a crystal-clear view into how this color-changing material behaves in a working battery -- information that could benefit next-generation rechargeable batteries.
31-Mar-2014 Ames Lab researchers show polymer-coated nanocubes form complex structures
Nanoparticles assembled in new ways hold the promise of a wave of new high-tech materials that could offer high strength, enhanced magnetic properties, light reflectivity or absorption, use as catalysts and much more. Scientists at the US Department of Energy's Ames Laboratory have developed a theoretical model to explore the effect of polymer coatings, including DNA, for self-assembly of nanocubes into so-called superlattices.
27-Mar-2014 Human-induced climate change reduces chance of flooding in Okavango Delta
Researchers at the University of Cape Town, Lawrence Berkeley National Laboratory and the United Nations Development Programme have analyzed how human-induced climate change has affected recent flooding in an ecologically and geographically unique river basin in southern Africa -- the Okavango River. After running a number of simulations, they found that greenhouse gas emissions have substantially reduced the chance of the floods in the region.
18-Mar-2014 Tapping into the metabolome
Metabolomics -- a field often called "the last 'omics frontier" -- seeks to understand the fundamental metabolic workings of a cell in a changing environment. Scientists at EMSL use mass spectrometers, nuclear magnetic resonance, imaging devices and other cutting-edge instruments to glean the information to help produce better fuels, crops and other bioproducts.
18-Mar-2014 Democratizing science with high-speed networks
For the first time, data collected and analyzed by a very remote user of the Department of Energy's National Center for Electron Microcopy via the Energy Sciences Network has been published. Because of this, scientists are optimistic about the future of remote microscopy for DOE-supported science.
17-Mar-2014 A new mathematics for experimental science
In the age of high-resolution detectors and international research collaborations, math has the potential to transform science and accelerate discovery. But this work will require state-of-the-art mathematics, carefully crafted in inventive new ways. That's where the Center for Applied Mathematics for Energy Research Applications (CAMERA) at Lawrence Berkeley National Laboratory comes in.
12-Mar-2014 Deep insights from thin layers
Imaging -- and understanding -- proteins may become a bit easier thanks to a team of researchers led by scientists at DOE's Pacific Northwest and Lawrence Livermore National Laboratories.
3-Mar-2014 Particle beam cancer therapy: The promise and challenges
Advances in accelerators built for fundamental physics research have inspired improved cancer treatment facilities. But will one of the most promising -- a carbon ion treatment facility -- be built in the US? Participants at a symposium organized by Brookhaven Lab for the 2014 AAAS meeting explored the science and surrounding issues.
1-Mar-2014 CDMS result covers new ground in search for dark matter
Scientists looking for dark matter face a serious challenge: No one knows what dark matter particles look like. So their search covers a wide range of possible traits -- different masses, different probabilities of interacting with regular matter.
Today, scientists on the Cryogenic Dark Matter Search experiment, or CDMS, announced they have shifted the border of this search down to a dark-matter particle mass and rate of interaction that has never been probed.
26-Feb-2014 New perspective on a corrosive problem
Researchers at Argonne Lab took a peek at the problem of corrosion from the perspective of the water, and found a critical transition that drives the creation of corrosive conditions.
20-Feb-2014 Brookhaven Lab's Jian Wang to help understand rainforest atmosphere dynamics
US Department of Energy researchers are joining scientific collaborators from the US, Brazil, and Germany to launch a two-year field study in the Amazon Basin. Data obtained during the Green Ocean Amazon (or GOAmazon) field campaign will enable scientists to study the intricacies of the natural state of the Amazon rainforest atmosphere and land systems and how these may be perturbed by human influences such as pollution and deforestation.
30-Jan-2014 Early Edison users deliver results
Before any supercomputer is accepted at NERSC, scientists are invited to put the system through its paces during an "early science" phase. While the main aim of this period is to test the new system, many scientists are able to use the time to significantly advance their work.
29-Jan-2014 NERSC celebrates 40 years at the forefront
This year, the Department of Energy's National Energy Research Scientific Computing Center (NERSC) is celebrating yet another milestone: its 40th anniversary.
The Department of Energy's Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time.