source:sci-newsTo build the global map of hydrogen abundances on the Moon, Johns Hopkins Applied Physics Laboratory researcher David Lawrence and his colleagues used data from the Neutron Spectrometer, one of five instruments mounted on NASA’s Lunar Prospector spacecraft.Lunar Prospector, which was deployed by NASA in 1998, orbited the Moon for 1.5 years and sent back the first direct evidence of enhanced hydrogen at the lunar poles, before impacting the lunar surface.The researchers calibrated the data to quantify the amount of hydrogen by the corresponding decrease of neutrons measured by th...
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source:resource-recyclingA technology that will allow recyclers to extract valuable metals from e-scrap like shredded hard drives without affecting the other materials is entering its pilot plant stage.Daniel Bina, CEO of Critical Materials Recycling and TdVib, said the new method will make rare earth recycling more accessible at a time when there is a critical need for more domestic supply.The method, called acid-free dissolution reaction (ADR), is unique because it can selectively target rare earths and doesn’t use acids to do so, according to Bina. It was developed at the Critical Materials...
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2022
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source：phys.orgCrystalline lithium niobate (LN) is considered the 'silicon of photonics' because of its outstanding optical properties, including a broad transparency window and high piezoelectric, acousto-optic, second-order nonlinear, and electro-optic coefficients, which are critical for photonic integrated circuit (PIC) applications. Recent breakthroughs in nanofabrication technology facilitate a variety of high-performance integrated photonic devices on thin-film LN, such as ultrafast electro-optic modulators, broadband optical frequency combs, and high-efficiency optical frequenc...
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source:azoopticsA pre-proof paper from the journal Optik studies luminance, optical and physical properties of Pr: NaAlGdP glass under various Pr2O3 concentrations. The appropriate chemical composition of developed glass was determined for its potential in photonics applications.Why is Phosphate Glass Important?Different spectroscopic methods have been used to characterize phosphate-based glasses' optical characteristics and crystalline structure. Because of their distinctive features, glasses have been identified as a possible material for biomedical and biomaterial photonics applic...
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2022
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