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.
By combining biocompatible light-capturing nanowire arrays with select bacterial populations, a potentially game-changing new artificial photosynthesis system offers a win/win situation for the environment: solar-powered green chemistry using sequestered carbon dioxide.
More American homes could be powered by the earth's natural underground heat with a nontoxic fluid that could cut in half the amount of water needed for a new power generation method called enhanced geothermal systems.
Soil carbon may not be as stable as previously thought. Also, soil microbes exert more direct control on carbon buildup than global climate models represent.
Relativistic Heavy Ion Collider Smashes Record for Polarized Proton Luminosity at 200 GeV Collision Energy
Thanks to accelerator advances, the Relativistic Heavy Ion Collider (RHIC, http://www.bnl.gov/rhic/), a powerful nuclear physics research facility at the U.S. Department of Energy's Brookhaven National Laboratory, just shattered its own record for producing polarized proton collisions at 200-giga-electron-volt (GeV) collision energy. The improvement will generate high volumes of data rapidly, giving physicists time to achieve several high-priority science goals in a single run at RHIC.
A collaboration led by Berkeley Lab scientists has established a method to simulate in the lab the soiling and weathering of roofing materials, reproducing in only a few days the solar reflectance of roofing products naturally aged for three years. Now this protocol has been approved by ASTM International, a widely referenced standards body, as a standard practice for the industry.
Scientists focused on producing biofuels more efficiently have a new powerful dataset to help them study the DNA of microbes that fuel bioconversion and other processes.
Thousands of times a second the Relativistic Heavy Ion Collider at Brookhaven National Laboratory re-creates the hot quark soup that existed at the dawn of the universe. Particles composed of heavy quarks can help reveal details about the quark-gluon plasma, and by extension, the early universe and the origins of 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. They may also shed light on an unknown form of energy, called dark energy, which is believed to cause the universe to expand at an accelerating rate.