Showing stories 51-75 out of 315 stories. <<<1 | 2 | 3 | 4 | 5 | 6 | 7>>>
7-Jul-2015 Big PanDA and Titan merge to tackle torrent of LHC's full-energy collision data
With the successful restart of the Large Hadron Collider, now operating at nearly twice its former collision energy, comes an enormous increase in the volume of data physicists must sift through to search for new discoveries. Fortunately, a remarkable data-management tool developed by physicists at Brookhaven National Laboratory and the University of Texas at Arlington is evolving to meet the big-data challenge.
6-Jul-2015 Scientists drive tiny shock waves through diamond
Researchers have used an X-ray laser to record, in detail never possible before, the microscopic motion and effects of shock waves rippling across diamond. The technique, developed at the Department of Energy's SLAC National Accelerator Laboratory, allows scientists to precisely explore the complex physics driving massive star explosions, which are critical for understanding fusion energy, and to improve scientific models used to study these phenomena.
30-Jun-2015 Homegrown solution for synchrotron light source
Scientists at the US Department of Energy's Ames Laboratory have made advances in angle-resolved photoemission spectroscopy (ARPES) to help better study electronic properties of new materials.
18-Jun-2015 Adapting nanoscience imaging tools to study ants' heat-deflecting adaptations
A new study shows that the tiny hairs of Saharan silver ants possess crucial adaptive features that allow the ants to regulate their body temperatures and survive the scorching hot conditions of their desert habitat. To study how the hairs allow the creatures to control electromagnetic waves in this manner, the Columbia Engineering research team turned to the resources and expertise available at Brookhaven Lab's Center for Functional Nanomaterials.
15-Jun-2015 What the blank makes quantum dots blink?
Quantum dots promise an astounding range of applications, if scientists can conquer their annoying habit of blinking. Researchers computing at NERSC recently ran simulations that offer new insights into the problem.
28-May-2015 Carbon nanothreads from compressed benzene
The thinnest possible linear thread that still retains a diamond-like structure was created by the extreme compression and decompression of the common chemical benzene. The threads may have outstanding mechanical and electronic properties. Further, the synthesis method opens up possible variations that could lead to materials presently unknown or impossible to make with existing techniques.
27-May-2015 Spiraling laser pulses could change the nature of graphene
A new study predicts that researchers could use spiraling pulses of laser light to change the nature of graphene, turning it from a metal into an insulator and giving it other peculiar properties that might be used to encode information.
27-May-2015 The 'why' of models
An international team of researchers from Oak Ridge National Laboratory, Macquarie University, the University of Western Sydney and the Max Planck Institute for Biogeochemistry set out to assess how two Free-Air CO2 Enrichment projects compared to eleven vegetation models that simulate various ecological processes. Instead of only benchmarking whether or not an individual model matched the experimental data, the researchers developed an 'assumption-centered' approach to evaluate why certain models performed better than others.
21-May-2015 Shape-shifting plastic
Researchers from Oak Ridge National Laboratory, Washington State University and the University of Idaho have developed a process to make a thermoset that can be reshaped and reused. The new plastic is a shape-memory polymer, so named because the material can 'remember' its original shape and return to it after being deformed with heat or other forces.
18-May-2015 Optical diagnostics researcher at Sandia wins DOE Early Career award
Sandia National Laboratories researcher Christopher Kliewer has won a $2.5 million, five-year Early Career Research Program award from the Department of Energy's Office of Science for his fundamental science proposal to develop new optical diagnostic tools to study interfacial combustion interactions that are major sources of pollution and vehicle inefficiency.
13-May-2015 Digitizing neurons
Supercomputing resources at Oak Ridge National Laboratory will support a new initiative designed to advance how scientists digitally reconstruct and analyze individual neurons in the human brain.
12-May-2015 ORNL group leads calorimeter upgrade for Large Hadron Collider experiment
Run-2 for the Large Hadron Collider -- the world's largest and most powerful particle collider -- began April 5 at CERN. In preparation, Thomas M. Cormier, who leads the LHC Heavy Ion group at Oak Ridge National Laboratory, led an upgrade of the electromagnetic calorimeter used for LHC's experiment called ALICE (for A Large Ion Collider Experiment). This detector measures the energies of high-energy electrons and gamma rays emitted from the quark-gluon plasma.
11-May-2015 'Chombo-crunch' sinks its teeth into fluid dynamics
Researchers at Lawrence Berkeley National Laboratory are breaking new ground in the modeling of complex flows in energy and oil and gas applications, thanks to a computational fluid dynamics and transport code dubbed 'Chombo-Crunch.'
10-May-2015 Metamaterials shine bright as new terahertz source
Terahertz waves are used in information, communication, processing, and data storage technologies, yet few terahertz sources are available due to the limitations of natural materials. Scientists discovered an efficient terahertz emission from two-dimensional arrays of gold split-ring resonator metamaterials, which allow design and use of light-matter interactions at a fundamental level. This discovery opens new ways to use such materials.
8-May-2015 SLAC researcher receives DOE 'Early Career' grant to support X-ray optics and imaging
Anne Sakdinawat, an associate staff scientist at the Department of Energy's SLAC National Accelerator Laboratory, has been recognized with a prestigious DOE Early Career Research Program grant to advance her work in creating and using next-generation focusing and imaging devices for X-ray experiments at SLAC and other research sites.
8-May-2015 Intertwining of superconductivity and magnetism
Experiments reveal nearly static, spatially modulated magnetism in a copper-oxide superconductor. Because static magnetism and superconductivity prefer not to coexist in the same material, the superconducting wave function is also likely modulated in space and phase-shifted to minimize overlap, consistent with recent theory. This study will assist in developing a predictive theory for high-temperature superconductivity that can assist in the design and discovery of improved superconductors.
30-Apr-2015 New path to loss-free electricity
Electric current flows without any resistance in a superconducting state thanks to a surprising redistribution of bonding electrons and the associated electronic and atomic behavior after substitution of some cobalt atoms for iron in barium iron arsenide.
29-Apr-2015 SIMES researchers elected to National Academy of Sciences
Materials scientists and professors at Stanford University and the Department of Energy's SLAC National Accelerator Laboratory Zhi-Xun Shen, Shoucheng Zhang and Aharon Kapitulnik were elected to the National Academy of Sciences. All three researchers are principal investigators at the joint SLAC and Stanford Institute for Materials and Energy Sciences.
28-Apr-2015 Direct visualization of magnetoelectric domains
A novel microscopy technique called magnetoelectric force microscopy was developed to detect the local cross-coupling between magnetic and electric dipoles. Combined experimental observation and theoretical modeling provide understanding on how a bulk linear magnetoelectric effect can be realized in a new family of materials.
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.