source:natureAbstractLanthanoid-doped Gallium Nitride (GaN) integrated into nanophotonic technologies is a promising candidate for room-temperature quantum photon sources for quantum technology applications. We manufactured praseodymium (Pr)-doped GaN nanopillars of varying size, and showed significantly enhanced room-temperature photon extraction efficiency compared to unstructured Pr-doped GaN. Implanted Pr ions in GaN show two main emission peaks at 650.3 nm and 651.8 nm which are attributed to 3P0-3F2 transition in the 4f-shell. The maximum observed enhancement ratio was 23.5 for 200 nm di...
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source:natureAbstractChallenges to deep sample imaging have necessitated the development of special techniques such as spatially offset optical spectroscopy to collect signals that have travelled through several layers of tissue. However, these techniques provide only spectral information in one dimension (i.e., depth). Here, we describe a general and practical method, referred to as Optical Recognition of Constructs Using Hyperspectral Imaging and Detection (ORCHID). The sensing strategy integrates (1) the spatial offset detection concept by computationally binning 2D optical data associated ...
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source:interestingengineeringFor the first time, Japanese scientists have found evidence that rare earth elements are indeed made when two neutron stars merge. The Astrophysical Journal just published the specifics of the scientists' discoveries.Many of the heavy atoms that make up our universe are created in the explosion that occurs when two neutron stars spiral inward and merge.The first verified incidence of this process, GW 170817, occurred in 2017. Despite this, except for strontium, recognized in optical spectra, scientists have struggled to pinpoint the precise elements produced du...
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Inexpensive Catalysts and Syzygy Plasmonics Photoreactors Open the Door for Broader Hydrogen Adoption source:prnewswireHOUSTON, Dec. 6, 2022 /PRNewswire/ -- Scientists from Syzygy Plasmonics have engineered a new kind of reactor designed to work with earth-abundant, light-activated catalysts created by a joint team from Rice University's Laboratory for Nanophotonics, Syzygy Plasmonics, and Princeton University's Andlinger Center for Energy and the Environment. The reactors use light instead of heat from combustion to power chemical reactions and can produce clean-burning hydrogen ...
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