Multi-photon 3D laser printing has revolutionized miniature fabrication, but limitations in speed and material compatibility have held it back. Now, researchers have taken a giant leap forward, achieving a tenfold increase ...
Optics & Photonics
Apr 8, 2024
0
25
Plants are made up of very rigid cells. Much like bricks in a wall, this feature gives them the structural support to maintain their shape and to stand upright against gravity. However, just like any living organism, plants ...
Plants & Animals
Apr 4, 2024
1
21
One of the most fundamental interactions in physics is that of electrons and light. In an experiment at Goethe University Frankfurt, scientists have now managed to observe what is known as the Kapitza-Dirac effect for the ...
Optics & Photonics
Apr 3, 2024
0
176
Focusing a tailored laser beam through transparent glass can create a tiny spot inside the material. Researchers at Tohoku University have reported on a way to use this small spot to improve laser material processing, boosting ...
Optics & Photonics
Mar 27, 2024
0
115
An international team led by Dr. Yuan Feng from Shanghai Astronomical Observatory of the Chinese Academy of Sciences has investigated the validity of the two main models of black hole jets by calculating the radiation predicted ...
Astronomy
Mar 25, 2024
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38
Metal halide perovskites have become well-deserved "star" materials among a variety of semiconductors owing to their excellent optoelectronic properties, such as high photoluminescence (PL) quantum yield (QY), high absorption ...
Optics & Photonics
Mar 15, 2024
0
4
Researchers at ETH have managed to trap ions using static electric and magnetic fields and to perform quantum operations on them. In the future, such traps could be used to realize quantum computers with far more quantum ...
Quantum Physics
Mar 13, 2024
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50
Over the past 20 years, many physicists have studied ultra-cold fermionic systems contained in magnetic or optical traps. When an external magnetic field is applied to a two-species fermionic system, the particles can pair ...
Condensed Matter
Mar 12, 2024
0
86
Gravitationally speaking, the universe is a noisy place. A hodgepodge of gravitational waves from unknown sources streams unpredictably around space, including possibly from the early universe.
Scientists are getting a more detailed look than ever before at the electrons they use in precision experiments.
General Physics
Feb 26, 2024
0
40
A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
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