SEARCH · Search NASA
Results for “pores”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Tribology of Pore-Textured Hard Surfaces under Physiological Conditions: Effects of Texture Scales
Not Available
Control of Pore Size in Ordered Mesoporous Carbon-Silica by Hansen Solubility Parameters of Swelling Agent
Explore the source record for details and available documents.
Synchrotron Imaging of Pore Formation in Li Metal Solid-State Batteries Aided by Machine Learning
High-rate capable, reversible lithium metal anodes are necessary for next generation energy storage systems. In situ tomography of Li/LLZO/Li cells is carried out to track morphological transformations in Li metal electrodes. Machine learning enables tracking the lithium metal morphology during galvanostatic cycling. Nonuniform lithium electrode kinetics are observed at both electrodes during cycling. Hot spots in lithium metal are correlated with microstructural anisotropy in LLZO. Mesoscale modeling reveals that regions with lower effective properties (transport and mechanical) are nuclei for failure. Advanced visualization combined with electrochemistry represents an important pathway toward resolving non-equilibrium effects that limit rate capabilities of solid-state batteries.
Fine Tuning the Pore Surface in Zirconium Metal–Organic Frameworks for Selective Ethane/Ethylene Separation
Not Available
Molecular Interactions and Layer Stacking Dictate Covalent Organic Framework Effective Pore Size
Not provided.
Reticular Chemistry in Pore Engineering of a Y-Based Metal–Organic Framework for Xenon/Krypton Separation
Not provided.
Inverse Design of Pore Wall Chemistry To Control Solute Transport and Selectivity
Not Available
Materials Combining Asymmetric Pore Structures with Well-Defined Mesoporosity for Energy Storage and Conversion
Explore the source record for details and available documents.
When Pore Met Semi: Charting the Rise of Porous Metal Halide Semiconductors
Metal halide semiconductors (MHS) are a versatile class of materials with fully customizable mechanical and optoelectronic properties that have proven to be prominent candidates in numerous impactful applications. Finding a way to generate porosity in MHS would bestow upon them an additional node in property engineering, thus allowing them to be utilized in uncharted technologies. Motivated by this promise, we developed a general strategy to render the MHS porous. We employed molecular cages as structure-directing agents and countercations, which fostered a new family of materials: porous metal halide semiconductors (PMHS). The presence of molecular cages gave rise to ultramicroporous structures imposed by the organic part cavities and a record water stability performance of 27 months so far. In this Perspective, we discuss the principles and promises of PMHS, which combine the merits of porous and electronic compounds.
Optimization of Pore-Space-Partitioned Metal–Organic Frameworks Using the Bioisosteric Concept
Not Available