source:physA team of oceanographers at the Scripps Institution of Oceanography, working with a colleague from Chungnam National University and another from the University of Hawaii, has mapped 19,000 previously unknown undersea volcanoes in the world's oceans using radar satellite data. In their paper published in the journal Earth and Space Science, the group describes how they used radar satellite data to measure seawater mounding to find and map undersea volcanoes and explains why it is important that it be done.The ocean floor, like dry land masses, features a wide variety of terrain. ...
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2023
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souece:scitechdailyThe introduction of rare earth elements into TiO2 can effectively improve the electron-hole separation of TiO2 and prolong the visible light response of TiO2.Cerium (Ce) shows variable valence states Ce3+/Ce4+ with different electronic structures (4f15d0 and 4f05d0, respectively) among rare earth elements, which easily form oxygen vacancies. Ce element with unique electronic structure can be used to modify semiconductor photocatalysts to improve their photocatalytic performance.In a study published in the journal Molecule, the research group led by Prof. LU Canzhong from Fuj...
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2023
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source:electriveThe European research and development project HEFT, launched by Spain’s Mondragon University, aims to develop cost-effective and efficient permanent magnet electric drive systems with higher power density for the mass production of next-generation electric vehicles.The four-million-euro project is funded by the European Commission and will involve eight partners from Belgium, Italy, Slovenia, Spain and the UK, alongside GKN Automotive joining as an industrial partner. The powertrain specialist will cover the manufacturing process as well as assembly, ensuring that the final des...
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2023
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source:phyStars emit light that travels through empty space without significant attenuation. The visual signal is essentially lossless until detected. After many years and billions of kilometers, starlight-photons may eventually encounter the earth's atmosphere and be decoded as a speck in the night sky by some lucky person's retina and brain.Light emitted by a pump laser may wish for the same journey lossless, but alas. For optical circuitry essential to computing and communication, light is sent through waveguides. In a silicon waveguide the light will attenuate after a few centimete...
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2023
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