(PhysOrg.com) -- Unmanned aerial vehicles (UAVs) are playing increasingly important roles in many fields. Ranging in size from the huge Global Hawk aircraft to hand-held machines, these remotely controlled devices are growing ...
Engineering
Jan 22, 2009
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When the expanded yellow tentacles of the sun coral began to appear on the Brazilian coastline, alarms rang. This species, also known as Tubastraea, was not supposed to be there. The movement of oil platforms and other shipping ...
Ecology
Jul 31, 2024
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38
Amid rising sea levels, plastics pollution and overfishing, the emerging "Internet of Underwater Things" will vastly expand knowledge about the world's seas.
Ecology
Jun 15, 2023
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3
Around the beginning of the 21st century, the world economy entered a new development cycle, and the demand for oil and natural gas resources around the world has skyrocketed. In the face of this huge energy demand, people ...
Earth Sciences
Apr 28, 2022
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8
Until now, it was only possible to optimize an acoustic cloaking structure for the air environment. However, with this latest research, "Acoustic cloak designed by topology optimization for acoustic-elastic coupled systems," ...
General Physics
Mar 11, 2021
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8
Previously, scientists knew only one type of curved optical rays—Airy beams and their derivatives. They were obtained back in 2007. Due to their physical properties, the beams can be used for manipulating small particles, ...
Nanophysics
Jan 27, 2020
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6
Applying bound states in the continuum (BICs) in photonic integrated circuits enables low-loss light guidance and routing in low-refractive-index waveguides on high-refractive-index substrates. Here, we demonstrate high-quality ...
Optics & Photonics
Jan 22, 2020
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2
Over millions of years, porpoises have developed powerful biosonar with high accuracy and intelligence to detect and track prey in noisy underwater environments. The sound source in a porpoise is about one half of the wavelength ...
Materials Science
Sep 19, 2019
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9
Researchers at Aalto University have discovered a surprising phenomenon that changes how we think about how sound can move particles. Their experiment is based on a famous experiment recognisable from high school science ...
General Physics
May 10, 2019
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16
An international team of researchers has built a new sensor network that can monitor two crucial activities, namely biodiversity, or the variety of life, in a particular habitat or ecosystem, and identification of possible ...
Engineering
Mar 21, 2019
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