Lasers are transformational devices, but one technical challenge prevents them from being even more so. The light they emit can reflect back into the laser itself and destabilize or even disable it. At real-world scales, ...
Optics & Photonics
Dec 2, 2022
0
68
Researchers have demonstrated a new visible light communication system that uses a single optical path to create a multi-channel communication link over the air. This approach could be used as a backup communication link ...
Optics & Photonics
Sep 14, 2022
0
203
Controlling thermal radiation is crucial in various industries and applications. In particular, infrared emissions from the body are important since body temperature can be regulated without the use of external energy sources ...
Materials Science
Aug 25, 2022
1
36
Researchers from Tokyo Metropolitan University have successfully enhanced technology to lift small particles using sound waves. Their "acoustic tweezers" could lift things from reflective surfaces without physical contact, ...
General Physics
Aug 22, 2022
0
51
As satellites crawl across the sky, they reflect light from the sun back down to Earth, especially during the first few hours after sunset and the first few hours before sunrise. As more companies launch networks of satellites ...
Space Exploration
Aug 3, 2022
0
149
Bad wireless reception, the noise in the radio signal or poor visibility in the fog—all these annoyances have to do with the fact that waves such as visible light or microwave signals are deflected and reflected by numerous ...
General Physics
Jul 14, 2022
1
374
Researchers have shown that a quantum-inspired technique can be used to perform LiDAR imaging with a much higher depth resolution than is possible with conventional approaches. LiDAR, which uses laser pulses to acquire 3D ...
Optics & Photonics
Jul 13, 2022
0
565
Twenty years after the retirement of the Concorde, several industrial and research projects want to make supersonic flight a reality again. However, supersonic planes produce sonic booms loud enough to warrant noise concerns ...
General Physics
Jun 7, 2022
1
226
Global biodiversity assessments require the collection of data on changes in plant biodiversity on an ongoing basis. Researchers from the universities of Zurich and Montréal have now shown that plant communities can be reliably ...
Ecology
May 19, 2022
0
265
Clouds come in myriad shapes, sizes and types, which control their effects on climate. New research led by the University of Washington shows that splintering of frozen liquid droplets to form ice shards inside Southern Ocean ...
Earth Sciences
Apr 13, 2022
0
104
