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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Low temperature open-air plasma deposition of amorphous tin oxide for perovskite solar cells
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What's the temperature tomorrow? Increasing trends in extreme volatility of daily maximum temperature in Central and Eastern United States (1950–2019)
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Water temperature measurements with a Rayleigh backscatter distributed sensor
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On the Origin of Room-Temperature Amplified Spontaneous Emission in CsPbBr 3 Single Crystals
CsPbBr 3 is an all-inorganic halide perovskite with excellent photoluminescence (PL) properties for laser applications. Amplified spontaneous emission (ASE) is a prerequisite for lasing and typically observed from low-dimensional CsPbBr3 nanostructures, where quantum confinement enhances ASE. However, a gain medium for lasing should be prepared into a robust bulk form that works under intense light illumination. Here, we demonstrate that bulk CsPbBr 3 single crystals exhibit highly efficient ASE with a threshold of 46 MWcm -2 at 520 nm, if PL reabsorption via the indirect Rashba gap is properly suppressed by thickness control. Based on a series of spectroscopic and microscopic measurements, we show that this below-the-gap absorption can significantly alter the PL feature and even the apparent color of the crystal depending on the crystal size. Our results show that a thin CsPbBr 3 single crystal can be utilized for lasing applications when engineered into a submillimeter thickness for effective light–matter interaction.
A Brief Guide to the Structure of High-Temperature Molten Salts and Key Aspects Making Them Different from Their Low-Temperature Relatives, the Ionic Liquids
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Phonon Properties of Bulk Violet Phosphorus Single Crystals: Temperature and Pressure Evolution
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High-pressure and low-temperature structural study of claudetite I, a monoclinic layered As 2 O 3 polymorph
High-pressure structural studies of claudetite I reveal that it exhibits the lowest As coordination numbers despite being the densest As 2 O 3 polymorph.
Temperature-dependent behavior in the local structure of BaTiO 3 nanocrystals
Here, we use pair distribution function analysis of synchrotron X-ray total scattering data to inspect the local structure of BaTiO 3 nanocrystals from 253 K < T < 413 K. The local structure consists of ca. r = 35 Å domains in which Ti 4+ displacements have the same coherence length as the overall perovskite structure.
Temperature dependent local structure coherence of surface-modified BaTiO 3 nanocubes
BaTiO 3 nanocubes capped by polar tetrafluoroborate (BF 4 − ) ligands are shown to have enhanced ferroelectric order and undergo sharper ferroelectric to paraelectric phase transitions relative to nanocubes capped with nonpolar oleic acid (OA) ligands.
Incubation Temperature and Maternal Resource Provisioning, but Not Contaminant Exposure, Shape Hatchling Phenotypes in a Species with Temperature-Dependent Sex Determination
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Estimating Near-Surface Air Temperature from Satellite-Derived Land Surface Temperature Using Temporal Deep Learning: A Comparative Analysis
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Inferring Urban Air Temperatures from Land Surface Temperatures with the E3SM Land Model (uELM), Satellite Observations, and Measurement Campaign
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All-Ceramic LC Resonator for Chipless Temperature Sensing Within High Temperature Systems
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