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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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Room-temperature sol–gel synthesis of organic ligand-capped ZnO nanoparticles
Abstract not provided
Room-Temperature Deformation and Martensitic Transformation of Two Co-Cr-Based Alloys
Here, deformation of two Co-Cr alloys was studied by in situ synchrotron X-ray diffraction. Both alloys show stress-induced martensite transformation, which is affected by phase stabilities and transformation strains. Crystal structure of WC in Co-20Cr-15W-10Ni is identified. Compared with other phases present, it is elastically isotropic, exhibits high strength, and can elastically withstand strains exceeding 1 pct. Texture change during phase transformation is explained based on the crystal orientation relationship between γ- and ε-phases.
Room-Temperature Mechanical Properties and Slow Crack Growth Behavior of Mg2Si Thermoelectric Materials
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Room-Temperature Microstructural Evolution of Extruded AM80 Magnesium Alloys under Dynamic Loading
Dynamic compression tests were conducted using a split Hopkinson pressure bar along the transverse direction at strain rates (SRs) of 3200 and 6000 s{sup −1}. The initial microstructure significantly affected the flow stress behavior and microstructural evolution of the two studied AM80 magnesium alloys. Under the same SR loading, the as-extruded alloy exhibited an apparently higher flow stress. At a SR of 6000 s{sup −1}, the flow stress of the as-extruded alloy exhibited a visible decrease (~ 34 MPa) as the strain increased to ~ 0.2, whereas a constant flow stress was exhibited by the solution-treated alloy. High-density dislocations and mechanical twins were detected in the two alloys at a SR of 3200 s{sup −1}. Interestingly, dynamic recrystallization (DRX) with an average grain size of ~ 2 µm was only identified in the as-extruded alloy as the applied SR increased to 6000 s{sup −1}. The increased localized deformation in the as-extruded alloy due to the retained strain energy and high critical twinning stress improved the DRX driving force, thereby resulting in visibly different micrographs of the two alloys when impacted at the SR of 6000 s{sup −1}.
Is there a path from cuprates towards room-temperature superconductivity?
A brief account is presented of an extensive experiment performed at Brookhaven National Laboratory, aimed at understanding the nature of high-temperature superconductivity in cuprates. Over the course of the last 12 years, over 2000 films of the prototypical high- T c superconductor, La 2-x Sr x CuO 4 , have been synthesized using atomic-layer-by-layer molecular beam epitaxy (ALL-MBE), characterized by a range of techniques, and patterned into devices. These were then used to measure accurately the key physical parameters in both the superconducting and the normal states, and establish their precise dependence on doping, temperature, and external fields. Our results bring in some great surprises, challenge the commonly held beliefs, rule out many theoretical models, and point to a new path for raising T c even further.
Dislocation glide-controlled room-temperature plasticity in 6H-SiC single crystals
Not Available
Deformation-induced charge redistribution in ceria thin film at room temperature
Not Available
Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts
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Tobacco smoke aging in the presence of ozone: a room sized chamber study
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Effect of room size, shape, AC placement, and air leakage on indoor airborne viral transmission
Not provided.
Corrigendum to “Cool Rooms for Indoor Heat Resilience: Evaluating Affordable Cooling Strategies in Heat-Stressed California Homes” [Building and Environment 287 (2026) 113877]
The authors regret an error in the acknowledgments section regarding the U.S. Department of Energy Solar Energy Technologies Office award number. The previously listed grant number, 2597–1625, was incorrect. The corrected acknowledgment should read: “This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technologies of the United States Department of Energy (DOE), under Contract No. DE-AC02–05CH11231. This material is based upon work supported by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technologies Office Award Number DE-EE00040384. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Department of Energy.” The authors would like to apologise for any inconvenience caused.