source:natureAbstractPolaritons enable subwavelength confinement and highly anisotropic flows of light over a wide spectral range, holding the promise for applications in modern nanophotonic and optoelectronic devices. However, to fully realize their practical application potential, facile methods enabling nanoscale active control of polaritons are needed. Here, we introduce a hybrid polaritonic-oxide heterostructure platform consisting of van der Waals crystals, such as hexagonal boron nitride (hBN) or alpha-phase molybdenum trioxide (α-MoO3), transferred on nanoscale oxygen vacancy patterns ...
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2022
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source:sustainability-timesGreen transportation is a crucial part of the fight against climate change. While most of the attention on alternative cars focuses on electric vehicles (EVs), hydrogen fuel is another promising technology.Hydrogen is the most abundant element in the universe and fuel cells can convert it into electricity. Fuel cell electric vehicles (FCEVs) use this to drive without fossil fuels, much like more familiar battery electric cars, but they have several unique advantages.The most apparent advantage of hydrogen fuel is it helps decarbonize transportation. Fuel cells’ only ...
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2022
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source:kitcoRare earths producer Lynas (ASX: LYC) today announced an approximately $500M project to expand capacity at the Mt Weld mine and concentration plant to meet accelerating market demand for rare earth materials.According to the company's statement, the Lynas' 2025 growth plan targeted a 50% increase in NdPr production to 10,500 tonnes per annum by 2025, including significant development of the Mt Weld ore body and beneficiation circuit.'To meet Lynas' ambition to grow with the market, this previously announced growth plan must be accelerated and increased,' the com...
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2022
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source:Bayreuth UniversityResearchers at the Universities of Bayreuth and Linköping have produced two surprising compounds of nitrogen and the rare earth metal yttrium under very high pressure. The new polynitrides contain ring- and spiral-shaped crystal structures of nitrogen that have never before been observed in experiments or predicted in theoretical calculations. They look similar to widespread structures of carbon compounds. The high-pressure syntheses described in the journal Angewandte Chemie show that the diversity of possible nitrogen compounds and their structures is far great...
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2022
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