This article describes suppression of instabilities with new neutral beam injector.
Rice University materials scientists replace all the atoms on top of a three-layer, two-dimensional crystal to make a transition-metal dichalcogenide with sulfur, molybdenum and selenium. The new material has unique electronic properties that may make it a suitable catalyst.
Flatter materials have fewer imperfections, which makes for better solar cells and light sensors.
In quantum mechanics particles can behave as waves and take many paths through an experiment. It requires only combinations of pairs of paths, rather than three or more, to determine the probability for a particle to arrive somewhere. Researchers at the universities of Vienna and Tel Aviv have addressed this question for the first time explicitly using the wave interference of large molecules behind various combinations of single, double, and triple slits.
Researchers at Rice University and Oak Ridge National Laboratory predict and experimentally confirm that two-dimensional materials grown onto a cone allows control over where defects appear. These defects, called grain boundaries, can be used to enhance the materials' electronic, mechanical, catalytic and optical properties.
A computer code used by physicists around the world to analyze and predict tokamak experiments can now approximate the behavior of highly energetic atomic nuclei, or ions, in fusion plasmas more accurately than ever.
Researchers have studied grain boundaries for decades and gained some insight into the types of properties grain boundaries produce, but no one has been able to nail down a universal system to predict if a certain configuration of atoms at grain boundaries will make a material stronger or more pliable. An interdisciplinary team of BYU researchers have cracked the code by juicing a computer with an algorithm that allows it to learn the elusive 'why' behind the boundaries' qualities.
A Canadian-led investigation has opened a new chapter in antimatter research. A study published in Nature reports on the ALPHA Collaboration's first detailed observation of spectral lines from an antimatter atom.
HRL Laboratories, LLC, researchers have developed a reversible alkali atom source that runs at low power and low voltage, which is beneficial in applications such as smaller, more efficient, and ultimately portable atomic clocks that use cold atoms. The research on the device was published online June 13, 2017 in Applied Physics Letters.
The possibility that neutrinos interact coherently with the nucleus of an atom was first theoretically described in 1974 -- and now physicists report the first observation of such an event.