Nobody can shoot a bullet through a banana in such a way that the skin is perforated but the banana remains intact. However, on the level of individual atomic layers, researchers at TU Wien (Vienna) have now achieved such ...
Nanophysics
8 hours ago
0
186
The fields of condensed matter physics and materials science are intimately linked because new physics is often discovered in materials with special arrangements of atoms. Crystals, which have repeating units of atoms in ...
General Physics
Jul 31, 2020
1
1166
New ground-breaking research from the University of Surrey could change the way scientists understand and describe lasers—establishing a new relationship between classical and quantum physics.
Optics & Photonics
Jul 10, 2020
3
676
Layered van der Waals materials are of high interest for electronic and photonic applications, according to researchers at Penn State and SLAC National Accelerator Laboratory, in California, who provide new insights into ...
Nanomaterials
Jul 06, 2020
0
84
For half a millennium, people have tried to enhance human vision by technical means. While the human eye is capable of recognizing features over a wide range of size, it reaches its limits when peering at objects over giant ...
Optics & Photonics
Jun 26, 2020
0
21
In the future, camera lenses could be thousands of times thinner and significantly less resource-intensive to manufacture. Researchers from Chalmers University of Technology, Sweden, now present a new technology for making ...
Optics & Photonics
Jun 11, 2020
0
255
Plasmonic metasurfaces are artificial 2-D sheets of plasmonic unit cells repeated in a subwavelength array, which give rise to unexpected wave properties that do not exist in nature. In the linear regime, their applications ...
Optics & Photonics
May 26, 2020
0
5
High-energy polarized electron beams are widely used in high-energy physics (linear colliders), nuclear physics and material science. However, such polarized electron beams are usually generated on conventional accelerators ...
General Physics
May 26, 2020
0
4
A team of scientists has come up with a way to improve electron bunches and produce brighter X-ray beams: Put a ring on them. The team, which includes researchers from the Department of Energy's SLAC National Accelerator ...
General Physics
Apr 27, 2020
0
68
NASA's "Send Your Name to Mars" campaign invited people around the world to submit their names to ride aboard the agency's next rover to the Red Planet. Some 10,932,295 people did just that. The names were stenciled by electron ...
Space Exploration
Mar 27, 2020
0
19
Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes, i.e. evacuated glass tubes that are equipped with at least two metal electrodes to which a voltage is applied, a cathode or negative electrode and an anode or positive electrode. They were discovered by German scientist Johann Hittorf in 1869 and in 1876 named by Eugen Goldstein kathodenstrahlen (cathode rays). Electrons were first discovered as the constituents of cathode rays. In 1897 British physicist J. J. Thompson showed the rays were composed of a previously unknown negatively charged particle, which was named electron.
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