Source:
Earth
A team of Australian scientists has produced a precision laser device that creates an accurate international standard for temperature.
Published today in the journal Nature Communications, the researchers from the University of Adelaide, University of Queensland and University of Western Australia, have come up with a new way to determine Boltzmann's constant, a number which relates the motion of individual atoms to their temperature.
In a development that could revolutionize electronic ciruitry, a research team from the University of Wisconsin at Madison (UW) and the U.S. Department of Energy's Argonne National Laboratory has confirmed a new way to control the growth paths of graphene nanoribbons on the surface of a germainum crystal.
Germanium is a semiconductor and this method provides a straightforward way to make semiconducting nanoscale circuits from graphene, a form of carbon only one atom thick.
The method was discovered by UW scientists and confirmed in tests at Argonne.
Source:
Washington D.C., Oct. 13, 2015 -- A simple new electron-beam multilayer deposition technique for creating intracavity contacts -- an important component of gallium nitride-based (III-nitride) vertical-cavity surface-emitting lasers (VCSELs) -- not only yields intriguing optoelectronic properties but also paves the way for others entering this realm of research. The new technique was developed by a team of researchers at the University of California, Santa Barbara.
People who believe that climate change is increasing the risk of devastating wildfires in Colorado are no more likely to take mitigation actions to protect their property, a new study led by researchers at the University of Colorado Boulder and the U.S. Forest Service has found.
Scientists have discovered that climbing vines are upsetting the carbon balance of tropical forests by crowding out and killing trees.
Rainforests play a vital role in the global carbon cycle. We depend on the trees found in these tropical areas to take up some of the carbon dioxide that we are emitting, so not all of our emissions end up in the atmosphere.
For decades, scientists have been looking for so-called "glueballs". Now it seems they have been found at last. A glueball is an exotic particle, made up entirely of gluons - the "sticky" particles that keep nuclear particles together. Glueballs are unstable and can only be detected indirectly, by analysing their decay. This decay process, however, is not yet fully understood.
Researchers at Chalmers University of Technology have succeeded in an experiment where they get an artificial atom to survive ten times longer than normal by positioning the atom in front of a mirror. The findings were recently published in the journal Nature Physics.
Using computational modeling, researchers at Carnegie Mellon University, the Colorado School of Mines and the University of California, Davis have come up with a design for a better liposome. Their findings, while theoretical, could provide the basis for efficiently constructing new vehicles for nanodrug delivery.
A team of theoretical high-energy physicists in the Fermilab Lattice and MILC Collaborations has published a new high-precision calculation that could significantly advance the indirect search for physics beyond the Standard Model (SM). The calculation applies to a particularly rare decay of the B meson (a subatomic particle), which is sometimes also called a "penguin decay" process.
Three leading Woods Hole Research Center (WHRC) experts on the threats of climate change in the Arctic will urge France's President Hollande and other political leaders to address the threat posed by thawing permafrost in the Arctic at the Arctic Circle Assembly in Reykjavik, Iceland on October 15. WHRC scientists Scott Goetz, Max Holmes and Susan Natali, who advised the State Department and helped to inform President Obama's strong remarks at the GLACIER conference in Alaska last month, will present research on permafrost thaw and other serious threats caused by climate change.