Thin fibers made of carbon nanotubes can be formed into antennas that are just as capable as copper antennas, according to researchers at Rice University and the National Institute of Standards and Technology.
Graphene -- a one-atom-thick layer of the stuff in pencils -- is a better conductor than copper and is very promising for electronic devices, but with one catch: Electrons that move through it can't be stopped. Until now, that is. Scientists at Rutgers University-New Brunswick have learned how to tame the unruly electrons in graphene, paving the way for the ultra-fast transport of electrons with low loss of energy in novel systems. Their study was published online in Nature Nanotechnology.
Researchers have discovered a new way to produce high energy photon beams. The new method makes it possible to produce these gamma rays in a highly efficient way, compared with today's technique. The obtained energy is a billion times higher than the energy of photons in visible light. These high intensity gamma rays significantly exceed all known limits, and pave the way towards new fundamental studies.
The experimental validation of an efficient iterative technique for compensating known position errors in a spherical near to far-field transformation (NTFFT) for elongated antennas using a minimum number of near-field (NF) measurements has been provided. This transformation exploits a non-redundant sampling representation of the voltage detected by the probe obtained by modeling a long antenna with a prolate ellipsoid.
Brown University researchers have improved the resolution of terahertz emission spectroscopy -- a technique used to study a wide variety of materials -- by 1,000-fold, making the technique useful at the nanoscale.
A hundred years ago, Albert Einstein published his General Relativity theory, predicting the existence of gravitational waves or ripples in space-time, due to violent motion of massive objects in the universe. Collision and merger of two neutron stars should produce gravitational waves and gamma rays simultaneously. Until a few weeks ago, that could not be proven scientifically. Then researchers saw the collision of two neutron stars on Aug. 17, 2017, and everything changed.
In a finding that could have broad applications in optical devices, Brown University researchers have shown that they can transform incoherent light to almost fully coherent and vice versa.
Physicists in the BASE collaboration at the CERN research center have been able to measure the magnetic force of antiprotons with almost unbelievable precision.
For the first time in history, Wits researchers have witnessed electromagnetic signals that are associated with the gravitational wave emission from the coalescence of two massive neutron stars.
Rochester Institute of Technology played a significant role in the breakthrough discovery of colliding neutron stars, cosmic collision detected in gravitational waves and in light. "We can probably account for all the gold that has ever been made," said Richard O'Shaughnessy from RIT's Center for Computational Relativity and Gravitation. "We know how often neutron stars merge and can predict how much of the radioactive material they eject. We can predict how much gold they make."