7-Apr-2017 Scientists watch a molecule protect itself from radiation damage
When DNA is hit with ultraviolet light, it can lose excess energy from radiation by ejecting the core of a hydrogen atom -- a single proton -- to keep other chemical bonds in the system from breaking. To gain insight into this process, researchers used X-ray laser pulses from the Linac Coherent Light Source (LCLS) at the Department of Energy's SLAC National Accelerator Laboratory to investigate how energy from light transforms a relatively simple molecule, 2-thiopyridone.
3-Apr-2017 How did the proton get its spin?
Scientists once thought proton spin was simple to understand. However, after experiments in the 1980s proved their ideas wrong, researchers have been working to understand how the proton's components contribute to its spin. Scientists use the unique capabilities of the Relativistic Heavy Ion Collider and the Continuous Electron Beam Accelerator Facility, both DOE Office of Science user facilities, to explore this fundamental phenomenon.
Producing and distributing hydrogen peroxide is a challenge in many parts of the world. Now scientists at the Department of Energy's SLAC National Accelerator Laboratory and Stanford University have created a small device for hydrogen peroxide production that could be powered by renewable energy sources, like conventional solar panels.
30-Mar-2017 Physicists move closer to listening in on sub-atomic conversation
Much like two friendly neighbors getting together to chat over a cup of coffee, the minuscule particles in our sub-atomic world also come together to engage in a kind of conversation. Now, nuclear scientists are developing tools to allow them to listen in on the particles' gab fests and learn more about how they stick together to build our visible universe. The first complex calculations of a particle called the sigma have been carried out and published in Physical Review Letters.
28-Mar-2017 Brookhaven scientists named Innovators of the Year
Evgeny Nazaretski and Yong Chu, physicists at the US Department of Energy's (DOE) Brookhaven National Lab, have been recognized by Innovate Long Island as Innovators of the Year for leading the development of the multilayer Laue lens microscope.
28-Mar-2017 Secrets to scientific success: Planning and coordination
Very often there are people behind the scenes of scientific advances, quietly organizing the project's logistics. New facilities and big collaborations require people to create schedules, manage resources, and communicate among teams. The US Department of Energy's Brookhaven National Laboratory is lucky to have Xiaofeng Guo in its ranks -- a skilled project manager who coordinates projects reaching across the US and around the world.
27-Mar-2017 The power of 1
When it comes to creating new materials, single crystals play an important role in presenting a clearer picture of a material's intrinsic properties. A typical material will be comprised of lots of smaller crystals and the grain boundaries between these crystals can act as impediments, affecting properties such as electrical or thermal resistance.
21-Mar-2017 Berkeley Lab researchers make NWChem's Planewave 'purr' on Intel's KNL architectures
Berkeley Lab researchers have successfully added thread-level parallelism on top of MPI-level parallelism in the planewave density functional theory method within the popular software suite NWChem. An important step to ensuring that computational chemists are prepared to compute efficiently on next-generation exascale machines.
14-Mar-2017 Two-dimensional MXene materials get their close-up
Researchers have long sought electrically conductive materials for economical energy-storage devices. Two-dimensional (2D) ceramics called MXenes are contenders. ORNL scientists using state-of-the-art scanning transmission electron microscopy provided the first direct evidence of the atomic-defect configurations in a titanium-carbide MXene synthesized at Drexel University. Published in ACS Nano, a journal of the American Chemical Society, the study coupled atomic-scale characterization and electrical property measurements with theory-based simulation.
13-Mar-2017 Nidia Gallego: Carbon scientist is as versatile as the element she studies
At the Department of Energy's Oak Ridge National Laboratory, Nidia Gallego develops carbon materials for energy technologies and space exploration. She investigates the physical and chemical properties of carbon in diverse forms -- including fiber, composites and foam.
'Carbon is a single element that can be many things,' Gallego said. 'It can be hard like diamond, soft like graphite or amorphous like activated carbon. Its material properties depend on how carbon atoms bond with each other.'
9-Mar-2017 High-precision calculations on supercomputers help reveal the physics of the universe
Argonne researchers have developed a new theoretical approach, ideally suited for high-performance computing systems, capable of making predictive calculations about particle interactions that conform almost exactly to experimental data. This new approach could give scientists a valuable tool for describing new physics and particles beyond those currently identified.
9-Mar-2017 Cracking the Mystery of Perfect Efficiency: Investigating Superconductors
A whole new area of research emerged from the discovery of superconductivity in 1911. Since then, scientists have learned why some materials superconduct near absolute zero and have discovered 'high-temperature' superconductors. Now, researchers supported by the Department of Energy's Office of Science are working to identify a common characteristic of high-temperature superconductors in hopes of one day developing one that works at room temperature.
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.