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ORNL-designed nuclear fuel cladding is now undergoing tests at Southern Nuclear’s Hatch Nuclear Power Plant in Georgia, with additional tests planned for later this year. Credit: Jason Richards/ Oak Ridge National Laboratory, U.S. Dept. of Energy
A team led by researchers at the Department of Energy’s Oak Ridge National Laboratory has developed a safer cladding for nuclear fuel rods. The new material, an alloy of iron, chromium and aluminum, avoids zirconium. As a result, it should give plant operators s...
Academic researchers look to Argonne’s Mira supercomputer to better understand boiling phenomena, bubble formation and two-phase bubbly flow inside nuclear reactors. Credit: Igor Bolotnov/North Carolina State University

The intrinsic beauty of bubbles—those thin watery spheres filled with air or other gases—has long captured the imagination of children and adults alike. But bubbles are also a linchpin of nuclear engineering, helping to explain the natural world, predict safety issues and improve the...

Materials—Polymer-theory-problem

Scientists at Oak Ridge National Laboratory have conducted a series of breakthrough experimental and computational studies that cast doubt on a 40-year-old theory describing how polymers in plastic materials behave during processing.

Eugene Dumitrescu, Ben Lawrie, Matthew Feldman, and Jordan Hachtel (from left) have conducted investigations aimed at controlling the dissipative nature of quantum systems and materials. The cathodoluminescence microscope used in their work appears at rig
Scientists at the Department of Energy’s Oak Ridge National Laboratory are conducting fundamental physics research that will lead to more control over mercurial quantum systems and materials. Their studies will enable advancements in quantum computing, sensing, simulation, and mater...
Small modular reactor computer simulation

Nuclear scientists at Oak Ridge National Laboratory are retooling existing software used to simulate radiation transport in small modular reactors, or SMRs, to run more efficiently on next-generation supercomputers. ORNL is working on various aspects of advanced SMR designs through s...

Using neutrons, an ORNL research team studied the protein structure of bacteria-produced enzymes called beta-lactamases by examining one of them to better understand how resistant bacteria behave.
New insights into certain catalytic enzymes formed by bacteria to break down antibiotics may lead to the design of drugs better equipped to combat resistant bacteria. Scientists at Oak Ridge National Laboratory used neutron crystallography at the lab’s Spallation Neutron Source to st...
Shown as green spheres, microcapsules containing the polymer manganoporphyrin, a newly developed antioxidant (green), the natural antioxidant tannic acid (yellow), and a binding material (blue), can be analyzed for stability and efficiency with neutrons.
Many natural and synthetic antioxidants help defend the body against oxidative stress—a biochemical imbalance that can damage cells and lead to illnesses such as diabetes, Alzheimer’s and cancer. However, these materials can become unstable and less effective over time. A new ...
Researcher Rob Schmidt and his team are using neutrons at HFIR’s CG-1D imaging instrument to study the development of dendrites with hope of improving the design of next-generation lithium ion batteries. Dendrites are thin microscopic fibers that can carr
Researchers are using neutrons to study a battery material that could offer a safer alternative to the flammable liquid component found in most types of lithium-ion batteries. Rob Schmidt, a postdoctoral researcher at the Department of Energy’s Oak Ridge National Laboratory, a...
The Weyl semimetal state is induced when the opposing motions of the electrons cause the Dirac cones to split in two (illustrated on the left by outward facing electrons, opposite the inward facing electrons on the right).
The observation of an abnormal state of matter in a two-dimensional magnetic material is the latest development in the race to harness novel electronic properties for more robust and efficient next-generation devices. Neutron scattering at the Department of Energy’s Oak Ridge ...