Researchers at Griffith University working with Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO) have unveiled a stunningly accurate technique for scientific measurements which uses a single atom as the sensor, with sensitivity down to 100 zeptoNewtons.
Stephen Arnold and his team at NYU Tandon's MicroParticle PhotoPhysics Laboratory for BioPhotonics are the first to find a way to determine the density of charges on an area of a whisperinig gallery mode micro-bead's surface, as well as the charge of an ensnared nanoparticle or virus, which could allow researchers and manufacturers not just to identify nanoparticles, but to manipulate them.
Scientists at Nagoya University have developed a simple way to align molecules in one direction on a flat graphene surface. Efficiently controlling molecular alignment is expected to lead to significant progress in surface chemistry and molecular engineering, as well as materials science.
It defies conventional wisdom about semiconductors. It's baffling that it even works. It eludes physics models that try to explain it. This newly tested class of light-emitting semiconductors is so easy to produce from solution that it could be painted onto surfaces to light up our future in myriad colors shining from affordable lasers, LEDs, and even window glass.
Helium, a noble gas, was long believed to be 'too aloof' to react with the other elements on the periodic table. Now, however, scientists have provided a theoretical explanation of how helium may be capable of forming stable compounds.
Paul Voyles, the Beckwith-Bascom Professor in materials science and engineering at the University of Wisconsin-Madison, and collaborators in Madison and at Yale University have made significant experimental strides in understanding how, when and where the constantly moving atoms in molten metal 'lock' into place as the material transitions from liquid to solid glass.
A new study, which included experiments at Berkeley Lab, suggests that water may be more common than expected at extreme depths approaching 400 miles and possibly beyond -- within Earth's lower mantle. The study explored microscopic pockets of a trapped form of crystallized water molecules in a sampling of diamonds.
University of Houston scientists are helping to develop a technology that could hold the key to unraveling one of the great mysteries of science: what constitutes dark matter?
When noble metals are treated with an aliphatic thiol, a uniform monolayer self-assembles on the surface; this phenomenon is interesting because the conducting molecules produce unique quantum properties that could be useful in electronics. Attempts to measure the current across this thin skim have yielded varied results, but researchers in France developed a stable mechanical setup to measure conductance across individual molecules with greater success. The results are in this week's Journal of Applied Physics.
Chemical compounds carry distinctive absorption 'fingerprints,' within the mid-infrared spectral region; this offers an opportunity to measure and study chemicals at extremely sensitive levels, but researchers currently lack the tools required. In a breakthrough, NIST researchers developed an on-silicon-chip laser source with outputs that consist of precisely defined and equally spaced optical lines within the mid-infrared spectral region. They report their findings in APL Photonics.