Physics

New data for understanding how heavier elements are made in the cosmos

Nuclear binding energies of several rare-earth isotopes have been measured for the first time. The experiment carried out in the Accelerator Laboratory of the University of Jyväskylä, Finland, provides essential data for understanding how elements heavier than iron are produced in the Cosmos.

New results show that matter and antimatter interact with light in precisely the same way

It is one of the greatest mysteries in the universe: Why is there so much more matter than antimatter?

'Dancing' holes in droplets submerged in water-ethanol mixtures

Researchers have observed the formation of holes that move by themselves in droplets of ionic liquids (IL) sitting inside water-ethanol mixtures. This curious, complex phenomenon is driven by an interplay between how ionic liquids dissolve, and how the boundary around the droplet fluctuates. Self-driven motion is a key feature of active matter, materials that use ambient energy to self-propel, with potential applications to drug delivery and nano-machine propulsion.

NASA Awards Contract for Continued Operations of its Jet Propulsion Laboratory

NASA has awarded a contract to the California Institute of Technology (Caltech) in Pasadena, California, to continue operations of the agency's Jet Propulsion Laboratory (JPL), also in Pasadena.

How evolution builds the most efficient airfoils

Swimming and flying animals are optimally adapted for cruising through their environments, producing thrust via propulsors—wings for birds and caudal fins for fish. Over millions of years, the morphology of these animals evolved for maximally efficient cruising, and about 30 years ago, researchers proposed that most swimmers cruise within a narrow range of Strouhal numbers—these are dimensionless numbers describing oscillating flow. And more recently, researchers determined that flying animals cruise in the same range of Strouhal numbers.

Young Kansans to Call Space Station from Eisenhower Presidential Library

Kansas Boy Scout troops and students will participate in a live downlink event with astronauts aboard the International Space Station next week as part of NASA’s Year of Education on Station.

Young Kansans to Call Space Station from Eisenhower Presidential Library

Kansas Boy Scout troops and students will participate in a live downlink event with astronauts aboard the International Space Station next week as part of NASA’s Year of Education on Station.

The culprit of some GaN defects could be nitrogen

As silicon-based semiconductors reach performance limits, gallium nitride is becoming the next go-to material for several technologies. Holding GaN back, however, is its high numbers of defects. Better understanding how GaN defects form at the atomic level could improve the performance of the devices made using this material. Researchers have taken a significant step by examining and determining six core configurations of the GaN lattice.

Wave fronts and ant trails

Ludwig Maximilian University of Munich physicists investigating spontaneous pattern formation in a model system that includes motile proteins have discovered hitherto unobserved phenomena. Their findings afford new insights into biological processes.

ORNL produces rare ruthenium isotope for atom smashing experiment

A tiny vial of gray powder produced at the Department of Energy's Oak Ridge National Laboratory is the backbone of a new experiment to study the intense magnetic fields created in nuclear collisions.

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