Chang-Hong Yu: Running a Physics Marathon

Profiled is Chang-Hong Yu of Oak Ridge National Laboratory, whose passion for long-distance races serves her well chasing neutrinos--electrically neutral subatomic particles that have almost no mass, interact weakly with matter and are spotted through feats of intellect and endurance.

Seth Davidovits Wins 2018 Marshall N. Rosenbluth Dissertation Award

Article describes dissertation award won by Seth Davidovits.

Theorists Publish Highest-Precision Prediction of Muon Magnetic Anomaly

UPTON, NY--Theoretical physicists at the U.S. Department of Energy's (DOE's) Brookhaven National Laboratory and their collaborators have just released the most precise prediction of how subatomic particles called muons--heavy cousins of electrons--"wobble" off their path in a powerful magnetic field.

NSF's IceCube Observatory Finds First Evidence of Cosmic Neutrino Source

An international team of scientists has found the first evidence of a source of high-energy cosmic neutrinos, subatomic particles that can emerge from their sources and, like cosmological ghosts, pass through the universe unscathed, traveling for billions of light years from the most extreme environments in the universe to Earth.

VLA Gives Tantalizing Clues About Source of Energetic Cosmic Neutrino

A single, ghostly subatomic particle that traveled some 4 billion light-years before reaching Earth has helped astronomers pinpoint a likely source of high-energy cosmic rays for the first time. Subsequent observations with the National Science Foundation's (NSF) Karl G. Jansky Very Large Array (VLA) have given the scientists some tantalizing clues about how such energetic cosmic rays may be formed at the cores of distant galaxies.

How Gold Nanoparticles Could Improve Solar Energy Storage

Star-shaped gold nanoparticles, coated with a semiconductor, can produce hydrogen from water over four times more efficiently than other methods - opening the door to improved storage of solar energy and other advances that could boost renewable energy use and combat climate change, according to Rutgers University-New Brunswick researchers.

Q&A: Berkeley Lab's Spencer Klein Talks About IceCube Then and Now, and What's Next

In this Q&A, Berkeley Lab physicist Spencer Klein, who has been a part of the IceCube collaboration since 2004, discusses Berkeley Lab's historic contributions to IceCube, and IceCube's contributions to science.

Hubble and Gaia Team Up to Fuel Cosmic Conundrum

Using the Hubble and Gaia space observatories, astronomers have made the most precise measurements to date of the expansion of space, which may suggest reworking our understanding of the physics of the universe.

Wall of Sound

Argonne researchers improve upon acoustic levitation by using less material, lowering costs and paving the way for more research in the field.

Why Nanowires Lose Their Superpowers

Scientists uncovered the microscopic process by which metal wires can lose their superconductivity. The ability to control this transition in nanowires could lead to a new class of energy-efficient information technologies based on tiny superconductors.

Newly Discovered Properties of Ferroelectric Crystal Shed Light on Emerging Branch of Materials

Ferroelectric materials are behind some of the most advanced technology available today. Findings that ferroelectricity can be observed in materials that exhibit other spontaneous transitions have given rise to a new class of materials, known as hybrid improper ferroelectrics. The properties of this type of material, however, are still far from being fully understood. New findings published in Applied Physics Letters help shine light on these materials and indicate potential for optoelectronic and storage applications.

Department of Energy Announces $75 Million for High Energy Physics Research

The U.S. Department of Energy (DOE) announced $75 million in funding for 77 university research awards on a range of topics in high energy physics to advance knowledge of how the universe works at its most fundamental level.

Underlying Mechanism Discovered for Magnetic Effect in Superconducting Spintronics

Superconductor-ferromagnet structures are widely regarded as the building blocks of superconducting spintronic technology. More conventional spintronic devices typically require large currents, so researchers are investigating the viability of low-resistance superconductors. Their new results could answer longstanding questions about how SF structures interact. They reveal a general mechanism of the long-range electromagnetic proximity effect in SF structures in Applied Physics Letters.

Thesis Prize Winner's Calculations Characterize Neutrino Interactions

Alessandro Baroni is helping demystify one of the most mysterious particles. His work is contributing to our understanding of neutrinos, and it has earned him the 2017 Jefferson Science Associates Thesis Prize for work performed on a thesis related to research at the Department of Energy's Thomas Jefferson National Accelerator Facility

Advances in plasma and fusion science are described in Quest, PPPL's research magazine

"Our research sheds new light on the function of plasma, the state of matter that comprises 99 percent of the visible universe," writes Steve Cowley, new director of PPPL. Quest summarizes much of the research that occurred at PPPL over the last year.

PPPL diagnostic is key to world record of German fusion experiment

Article describes XICS measurement of W7-X temperature that contributed to stellarator world record.

Berkeley Lab Team Wins Data-Driven Scavenger Hunt for Simulated Nuclear Materials

Competing in a fictitious high-stakes scenario, a group of scientists at Berkeley Lab bested two dozen other teams in a months-long, data-driven scavenger hunt for simulated radioactive materials in a virtual urban environment. The goal of this event was both to improve the detection methods that could be applied to actual threats involving nuclear materials, and to create a platform to virtually vet out these methods.

Physicists Uncover Why Nanomaterial Loses Superconductivity

For the first time, physicists discovered that superconducting nanowires made of MoGe alloy undergo quantum phase transitions from a superconducting to a normal metal state in increasing magnetic field at low temperatures. The findings are fully explained by the critical theory.

Generating Electrical Power From Waste Heat

Researchers from Sandia National Laboratories have developed a tiny silicon-based device that can harness what was previously called waste heat and turn it into DC power.

Meet Claire Lee: Particle Physicist and Non-Traditional Science Communicator

Particle physicist Claire Lee ­­­­­­­­is no stranger to the spotlight. Lee's performance background and comfort on stage are certainly advantages when it comes to communicating science in front of large audiences. She's given astronomy lectures, sure, but she's also performed stand-up comedy routines with fellow researchers. Lee said she's learned to use her acting, public speaking, and communication skills to convey her excitement for scientific research.

Extracting Signals of Elusive Particles from Giant Chambers Filled with Liquefied Argon

In two new papers, the MicroBooNE collaboration describes how they use this detector to pick up the telltale signs of neutrinos. The papers include details of the signal processing algorithms that are critical to accurately reconstruct neutrinos' subtle interactions with atoms in the detector.

Yet Again, Einstein's Theory Passes the Test with Flying Colors

An international team of astronomers, which includes Duncan Lorimer, West Virginia University professor of physics and astronomy, has tested Einstein's theory using three stars orbiting each other: a neutron star and two white dwarfs. Their findings prove that Einstein's theory still passes the test in such extreme conditions.

Even Phenomenally Dense Neutron Stars Fall Like a Feather

Astronomers have given one of Einstein's predictions on gravity its most stringent test yet. By precisely tracking the meanderings of three stars in a single system - two white dwarf stars and one ultra-dense neutron star - the researchers determined that even phenomenally compact neutron stars "fall" in the same manner as their less-dense counterparts

A First Look at Interstitial Fluid Flow in the Brain

Past research has shown a link between interstitial fluid flow and an increased invasion rate of glioblastoma cells, and a team of biomedical researchers and electrical engineers recently developed a new method to measure and reconstruct interstitial fluid flow velocities in the brain. This method gives researchers a first look at interstitial fluid flow dynamics in glioma models, and the technique can readily translate to clinical models already using contrast-enhanced MRI. The team describes their method in APL Bioengineering.

New Experimental Results from the Largest and Most Sophisticated Stellerator

An international team is running tests on the largest and most sophisticated stellerator, the Wendelstein 7-X fusion experiment. This complex machine is housed at the Max-Planck-Institute of Plasma Physics, and researchers are analyzing data from the first experiment campaign that took place in 2016, hoping to understand the science of fusion reactors. In a new report in Physics of Plasma, the scientists recount the first detailed characterization of plasma turbulence at the outer edge of the stellerator.