Showing stories 51-75 out of 172 stories. <<<1 | 2 | 3 | 4 | 5 | 6 | 7>>>
13-Apr-2015 Researchers create a new map of invisible dark matter
Scientists on the Dark Energy Survey, including researchers from the Department of Energy's SLAC National Accelerator Laboratory, have released the first in a series of dark matter maps of the cosmos. These maps, created with one of the world's most powerful digital cameras, are the largest contiguous maps created at this level of detail, and will improve our understanding of dark matter's role in the formation of galaxies.
13-Apr-2015 Long-sought magnetic mechanism observed in exotic hybrid materials
Scientists have measured the subatomic intricacies of an exotic phenomenon first predicted more than 60 years ago. This so-called van Vleck magnetism is the key to harnessing the quantum quirks of topological insulators -- hybrid materials that are both conducting and insulating -- and could lead to unprecedented electronics.
6-Apr-2015 'Explosive' atom movement is new window into growing metal nanostructures
Scientists at the US Department of Energy's Ames Laboratory expected to see slow, random movement when they dropped lead atoms on a lead-on-silicon surface. 'But what we saw? BOOM! Fast, explosive and organized!' said Michael Tringides, Ames Laboratory physicist. The unusual atom movement may represent a new way to grow perfect, tiny metal nanostructures for nanostransistors, nanoswitches, and nanomagnets.
25-Mar-2015 Protein shake-up
For living organisms proteins are an essential part of their body system and are needed to thrive. In recent years, a certain class of proteins has challenged researchers' conventional notion that proteins have a static and well-defined structure.
25-Mar-2015 A tale of 2 colliders, 1 thesis, 2 awards -- and a physics mystery
Dennis Perepelitsa, a physicist exploring the mysteries of nuclear physics at RHIC and the LHC, has the distinction of being the first person to earn outstanding Ph.D. thesis awards from both research communities. His Ph.D. work, based on complementary data collected at the PHENIX and ATLAS detectors, showcased intriguing findings and an ongoing mystery that is guiding part of the research programs at both machines now.
20-Mar-2015 Organic photovoltaics experiments showcase HPC 'superfacility' concept
A collaborative effort linking the Advanced Light Source at Lawrence Berkeley National Laboratory with supercomputing resources at NERSC and the Oak Ridge Leadership Computing Facility is yielding exciting results in organic photovoltaics research that could transform the way researchers use these facilities and improve scientific productivity in the process.
18-Mar-2015 Scientists watch quantum dots 'breathe' in response to stress
Researchers at the Department of Energy's SLAC National Accelerator Laboratory watched nanoscale semiconductor crystals expand and shrink in response to powerful pulses of laser light. This ultrafast 'breathing' provides new insight about how such tiny structures change shape as they start to melt -- information that can help guide researchers in tailoring their use for a range of applications.
18-Mar-2015 Nanostructure complex materials modeling
Brookhaven physicist Simon Billinge illustrates how advances in computing and applied mathematics can improve the predictive value of models used to design new materials.
17-Mar-2015 Part II, Tackling grand challenges in geochemistry: Q&A with Andrew Stack
In this Q&A Andrew Stack, a geochemist at the Department of Energy's Oak Ridge National Laboratory, advances understanding of the dynamics of minerals underground. Stack and his team make discoveries that will help to improve our understanding of a wide range of energy-related issues, such as geologic storage of carbon dioxide, oil and gas discovery and development, and remediation of toxic contaminants. His current research spans three disciplines -- geology, chemistry and computing.
17-Mar-2015 Granular data processing on HPCs using an event service
Brookhaven Lab/ATLAS physicist Torre Wenaus describes an effort to trickle small 'grains' of data generated by the ATLAS experiment at the Large Hadron Collider (LHC) in Europe into small pockets of unused supercomputing time, sandwiched between big jobs on high-performance supercomputers.
10-Mar-2015 Possible rare dwarf galaxies found orbiting Milky Way
Researchers have discovered a set of eight celestial objects orbiting our home galaxy, the Milky Way, that appear to be rare dwarf satellite galaxies. Dwarf galaxies are the smallest known galaxy structures and may hold the key to understanding dark matter.
9-Mar-2015 Scientists gather at SLAC to prepare for Large Synoptic Survey Telescope
When the Large Synoptic Survey Telescope begins in 2022 to image the entire southern sky from a mountaintop in Chile, it will produce the widest, deepest and fastest views of the night sky ever observed -- and a flood of 6 million gigabytes of data per year that are expected to provide new insights into dark matter, dark energy and other cosmic mysteries.
4-Mar-2015 The making of a geochemist: Q&A with Andrew Stack
In this Q&A Andrew Stack of the Department of Energy's Oak Ridge National Laboratory calls on expertise in geology, chemistry and computing to advance understanding of the dynamics of minerals underground. He investigates chemical processes that take place on mineral surfaces at scales ranging from individual atoms to entire rocks. These processes can trap contaminants, such as nuclear waste, carbon dioxide and toxic by-products from hydraulic fracturing.
26-Feb-2015 SLAC assumes a leading role for SuperCDMS SNOLAB
Deciphering the nature of dark matter -- the mysterious substance that makes up about 85 percent of the matter in the universe yet has never been directly seen -- is one of the most important quests in particle physics today. As the lead laboratory in the Department of Energy for the SuperCDMS SNOLAB project, SLAC National Accelerator Laboratory is playing an important role in tracking it down.
23-Feb-2015 Zeolites: The inside story
Zeolites have been used for decades as catalysts and in other industrial applications, but the molecular transformations occurring within the porous material is not well understood. Scientists from universities, national laboratories and industries are using EMSL's staff expertise and advanced instrumentation to gain an atomic-level understanding of these materials to improve energy production and address environmental issues.
20-Feb-2015 New programs enhance SIMES role in studying exotic new materials
Two new three-year research projects are supporting the role of the Stanford Institute for Materials and Energy Sciences (SIMES) as a leading center for studying exotic new materials that could enable future innovative electronic and photonic applications. SIMES is a joint institute of Stanford University and the Department of Energy's SLAC National Accelerator Laboratory.
18-Feb-2015 Semiconductor works better when hitched to graphene
Graphene -- a one-atom-thick sheet of carbon with highly desirable electrical properties, flexibility and strength -- shows great promise for future electronics, advanced solar cells, protective coatings and other uses, and combining it with other materials could extend its range even further.
13-Feb-2015 SLAC and Stanford's James D. Bjorken shares 2015 Wolf Prize in Physics
SLAC theoretical physicist and Stanford Professor Emeritus James D. 'BJ' Bjorken has been awarded the 2015 Wolf Prize in Physics for his key role in elucidating the nature of the strong force and predicting what would happen if electrons were violently slammed into protons in the atomic nucleus.
11-Feb-2015 Smashing polarized protons to uncover spin and other secrets
If you want to unravel the secrets of proton spin, put a 'twist' in your colliding proton beams. The Relativistic Heavy Ion Collider is the only facility in the world with the ability to collide such spin-polarized protons. The latest round of these collisions has just begun and will continue for approximately the next nine weeks.
6-Feb-2015 Energy Secretary Moniz dedicates the world's brightest Synchrotron Light Source
US Department of Energy (DOE) Secretary Ernest Moniz today dedicated the world's most advanced light source, the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory (BNL). The NSLS-II is a $912-million DOE Office of Science User Facility that produces extremely bright beams of x-ray, ultraviolet, and infrared light used to examine a wide range of materials, including superconductors and catalysts, geological samples, and biological proteins to accelerate advances in energy, environmental science, and medicine.
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.