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Alice Perrin is a Distinguished Staff Fellow and materials scientist at Oak Ridge National Laboratory. Credit: Carlos Jones/ORNL, U.S. Dept. of Energy

Alice Perrin spills the beans about alloys

Alice Perrin is passionate about scientific research, but also beans — as in legumes.

Vincente Guiseppe, co-spokesperson of the Majorana Collaboration and a research staff member at ORNL, in front of the Majorana Demonstrator shield on the 4850 Level of SURF. Credit: Nick Hubbard/Sanford Underground Research Facility

Researchers publish ‘final word’ on Majorana Demonstrator

For nearly six years, the Majorana Demonstrator quietly listened to the universe. Nearly a mile underground at the Sanford Underground Research Facility, or SURF, in Lead, South Dakota, the experiment collected data that could answer one of the most perplexing questions in physics: Why is the universe filled with something instead of nothing?

Heat is typically carried through a material by vibrations known as phonons. In some crystals, however, different atomic motions — known as phasons — carry heat three times faster and farther. This illustration shows phasons made by rearranging atoms, shown by arrows. Credit: Jill Hemman/ORNL, U.S. Dept. of Energy

Neutrons reveal key to extraordinary heat transport

Warming a crystal of the mineral fresnoite, ORNL scientists discovered that excitations called phasons carried heat three times farther and faster than phonons, the excitations that usually carry heat through a material.

ORNL Weinberg Fellow Addis Fuhr uses quantum chemistry and machine learning methods to advance new materials. Credit: Genevieve Martin/ORNL, U.S. Dept. of Energy

Addis Fuhr: Working to control impurities in materials

When Addis Fuhr was growing up in Bakersfield, California, he enjoyed visiting the mall to gaze at crystals and rocks in the gem store.

A team of ORNL researchers used neutron diffraction experiments to study the 3D-printed ACMZ alloy and observed a phenomenon called “load shuffling” that could inform the design of stronger, better-performing lightweight materials for vehicles. Credit: ORNL, U.S. Dept. of Energy

Scientists use neutrons to discover strengthening behavior in alloys

ORNL researchers have identified a mechanism in a 3D-printed alloy – termed “load shuffling” — that could enable the design of better-performing lightweight materials for vehicles.