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Assembly of the PROSPECT neutrino detector. (Credit: PROSPECT collaboration / Mara Lavitt)
The Precision Reactor Oscillation and Spectrum Experiment (PROSPECT) has completed the installation of a novel antineutrino detector that will probe the possible existence of a new form of matter. PROSPECT, located at the High Flux Isotope Reactor (HFIR) at the Department of Energy...
From left, ORNL’s Rick Lowden, Chris Bryan and Jim Kiggans were troubled that target discs of a material needed to produce Mo-99 using an accelerator could deform after irradiation and get stuck in their holder.

“Made in the USA.” That can now be said of the radioactive isotope molybdenum-99 (Mo-99), last made in the United States in the late 1980s. Its short-lived decay product, technetium-99m (Tc-99m), is the most widely used radioisotope in medical diagnostic imaging. Tc-99m is best known ...

A tetradentate ligand selects americium (Am, depicted by green spheres) over europium (Eu, blue spheres). Red indicates oxygen atoms and purple, nitrogen atoms that are the key to the ligand’s selectivity. Image credit: Oak Ridge National Laboratory, U.S.
After used nuclear fuel is removed from a reactor, it emits heat for decades and remains radioactive for thousands of years. The used fuel is a mixture of major actinides (uranium, plutonium), fission products (mainly assorted metals, including lanthanides) and minor actinides (i.e....
Fidget spinner
One drop of liquid, a cutting-edge laser 3D-printer and a few hours are all it takes to make a fidget spinner smaller than the width of a human hair. The tiny whirligig was created by researchers at Oak Ridge National Laboratory’s Center for Nanophase Materials Sciences to illustrate the facility’s unique resources and expertise available to scientists across the world.
Researchers at Rice University and Oak Ridge National Laboratory determined that two-dimensional materials grown onto a cone allow control over where defects called grain boundaries appear.

Rice University researchers have learned to manipulate two-dimensional materials to design in defects that enhance the materials’ properties. The Rice lab of theoretical physicist Boris Yakobson and colleagues at the Department of Energy’s Oak Ridge National Laboratory are combi...

Ben Doughty
No two scientists have the same story about how they ended up in their field. Some people seem to have been born scientists; others develop their love for it as budding minds full of curiosity. Then there are those who don’t discover science until later in life, but when they do, the...
ORNL’s Xiahan Sang unambiguously resolved the atomic structure of MXene, a 2D material promising for energy storage, catalysis and electronic conductivity. Image credit: Oak Ridge National Laboratory, U.S. Dept. of Energy; photographer Carlos Jones

Researchers have long sought electrically conductive materials for economical energy-storage devices. Two-dimensional (2D) ceramics called MXenes are contenders. Unlike most 2D ceramics, MXenes have inherently good conductivity because they are molecular sheets made from the carbides ...

Water is seen as small red and white molecules on large nanodiamond spheres. The colored tRNA can be seen on the nanodiamond surface. Image by Michael Mattheson, OLCF, ORNL
It’s not enough to design new drugs. For drugs to be effective, they have to be delivered safely and intact to affected areas of the body. And drug delivery, much like drug design, is an immensely complex task.
3-D visualization of chemically-ordered phases in an iron-platinum (FePt) nanoparticle.

Barely wider than a strand of human DNA, magnetic nanoparticles—such as those made from iron and platinum atoms—are promising materials for next-generation recording and storage devices like hard drives. Building these devices from nanoparticles should increase storage capaci...

Tennessine thumbnail
The recently discovered element 117 has been officially named "tennessine" in recognition of Tennessee’s contributions to its discovery, including the efforts of the Department of Energy's Oak Ridge National Laboratory and its Tennessee collaborators at Vanderbilt University and the University of Tennessee.