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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source:photonicsBERLIN, April 17, 2023 — Researchers at the Max Born Institute (MBI) used x-ray magnetic circular dichroism (XMCD), a technique that can be used to measure the spin and charge dynamics in multi-elemental magnetic materials, in a laser laboratory setting and performed experiments at the absorption L edges of iron at a photon energy of around 700 eV.Until now, use of XMCD in the soft x-ray range has been limited to synchrotron-radiation sources and free-electron lasers. The researchers believe that their approach could be adapted to other transition metal and rare-earth absorptio...
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2023
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