Researchers from Berkeley Lab and the University of Hawaii at Manoa have shown for the first time that cosmic hot spots, such as those near stars, could be excellent environments for the creation of molecular precursors to DNA.
A new study shows that the recently developed Compact Light Source (CLS) - a commercial X-ray source with roots in research and development efforts at the Department of Energy's SLAC National Accelerator Laboratory - enables computer tomography scans that reveal more detail than routine scans performed at hospitals today. The new technology could soon be used in preclinical studies and help researchers better understand cancer and other diseases.
1) 3-D face analysis. 2) Turbine-associated fish injuries. 3) Imaging atoms for better batteries.
A team led by Stanford scientists has created software that tackles the big data problem for X-ray laser experiments at the Department of Energy's SLAC National Accelerator Laboratory. The program allows researchers to tease out more details while using far fewer samples and less data and time. It can also be used to breathe new life into old data by reanalyzing and improving results from past experiments at the Linac Coherent Light Source (LCLS) X-ray free-electron laser, a DOE Office of Science User Facility.
ORNL scientists combined atomic force microscopy and mass spectrometry into one instrument that can probe a polymer sample in three dimensions and overlay information about the topography of its surface, the atomic-scale mechanical behavior of the bulk sample, and subsurface chemistry. Their results are published in ACS Nano.
Researchers using the Advanced Photon Source, a Department of Energy user facility at Argonne National Laboratory, have gotten the first-ever look inside the living beetle as it sprays. The results are published today in Science.
Scientists at the Department of Energy's SLAC National Accelerator Laboratory and Utrecht University have identified key mechanisms of the aging process of catalyst particles that are used to refine crude oil into gasoline. This advance could lead to more efficient gasoline production.
A group of almost 30 scientists and engineers from six research institutions reported the direct detection of cyclotron radiation from individual electrons April 20 in Physical Review Letters. They used a specially developed spectroscopic method that allowed them to measure the energy of electrons, one single electron at a time. The method provides a new way to potentially measure the mass of the neutrino, a subatomic particle that weighs at most two-billionths of a proton.
Researchers at Berkeley Lab have conducted the most comprehensive study yet of the full cost of saving electricity by U.S. utility efficiency programs and now have an answer: 4.6 cents. That's the average total cost of saving a kilowatt-hour in 20 states from 2009 to 2013.
Argonne Leadership Computing Facility Supercomputer Helps Identify Materials to Improve Fuel Production
ALCF resources being used to demonstrate a predictive modeling capability that can help accelerate the discovery of new materials to improve biofuel and petroleum production
For the first time, industry and policymakers have a comprehensive report detailing the U.S. hydropower fleet's 2,198 plants that provide about 7 percent of the nation's electricity.
For the first time, nanomagnet islands or arrays were arranged into an exotic structure (called "shakti") that does not directly relate to any known natural material. The "shakti" artificial spin ice configuration was fabricated and reproduced experimentally. The arrays are theoretical predictions of multiple ground states that are characteristic of frustrated magnetic materials. The results open the door to experiments on other artificial spin-ice lattices, predicted to host interesting phenomena.
The emergence of a new magnetic phase with a square lattice before the onset of superconductivity is revealed in some iron arsenide compounds, confirming theoretical predictions of the effects of doping on magnetic interactions between the iron atoms and their relationship to high temperature superconductivity. Understanding the origin of thermodynamic phases is vital in developing a unified theory for the elusive microscopic mechanism underlying high-temperature superconductivity.
Experiments on a copper-oxide superconductor reveal nearly static, spatially modulated magnetism. Because static magnetism and superconductivity do not like 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 insight will aid in writing a predictive theory for high-temperature superconductivity.
Cerium is a widely available and inexpensive rare-earth metal. Ames Laboratory scientists have used it to create a high-performance magnet that's similar in performance to traditional dysprosium-containing magnets and could make wind turbines less expensive to manufacture.
News release for PPPL paper on update to TRANSP code to better simulate the interaction between energetic particles and instabilities in fusion plasmas.
Thermal imaging, microscopy and ultra-trace sensing could take a quantum leap with a technique developed by researchers at ORNL.
An experiment at the Department of Energy's SLAC National Accelerator Laboratory has revealed in atomic detail how a hypertension drug binds to a cellular receptor that plays a key role in regulating blood pressure. The results could help scientists design new drugs that better control blood pressure while limiting side effects.
Taking child's play with building blocks to a whole new level-the nanometer scale-scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have constructed 3D "superlattice" multicomponent nanoparticle arrays where the arrangement of particles is driven by the shape of the tiny building blocks. The method uses linker molecules made of complementary strands of DNA to overcome the blocks' tendency to pack together in a way that would separate differently shaped components.
Metamaterials allow design and use of light-matter interactions at a fundamental level. An efficient terahertz emission from two-dimensional arrays of gold split-ring resonator metamaterials was discovered as a result of excitation by a near-infrared pulsed laser.
A stable bulk material shows the same physics found in graphene, which illuminated the interactions of electron's orbital motion and its intrinsic magnetic orientation. The new material will be a test ground for theories on how electron interactions in solids shape exotic electron behavior.
For a magnetic thin film deposited onto a transition metal oxide film, the magnetic properties change dramatically as the oxide undergoes a structural phase transition. The hybrid between a simple magnetic material and a transition-metal oxide provides a "window" to understand the metal-to-insulator transition and offers dramatic tunability of magnetic properties. Potential applications are envisioned in the fields of information storage and power transmission.
Climate models calculate a changing mix of clouds and emissions that interact with solar energy. To narrow the broad range of possible answers from a climate model, researchers analyzed the effect of several proven numerical stand-ins for atmospheric processes on the energy flux at the top of the atmosphere. They found that the flux is the main driver of surface temperature change.
Precipitation is difficult to represent in global climate models. Although most single-column models can reproduce the observed average precipitation reasonably well, there are significant differences in their details. Scientists evaluated several single-column models, providing insights on how to improve models' representation of convection, which is integral to storm cloud formation.
To begin to understand poplar growth, a possible bioenergy crop, scientists at North Carolina State University built a robust high-throughput pipeline for studying the hierarchy of genetic regulation of wood formation using tissue-specific single cells called protoplasts.