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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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Precise measurement of activation parameters for individual dislocation nucleation during in situ TEM tensile testing of single crystal nickel
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Thermodynamic and Kinetic Parameters for Calcite Nucleation on Peptoid and Model Scaffolds: A Step toward Nacre Mimicry
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Aerosol Physicochemical Mixing State and Cloud Nucleation Potential during Tracking Aerosol Convection Interactions Experiment (TRACER) Campaign
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On the Mechanism of Soot Nucleation. III. The Fate and Facility of the E-Bridge
Rotationally-excited dimerization of aromatic moieties is a mechanism proposed recently to explain the initial steps of soot particle inception in combustion and pyrolysis of hydrocarbons. The product of such dimerization, termed E-bridge, is an angled molecular structure composed of two aromatic rings sharing a common bond. The present study explores the immediate fate of the E-bridge. The performed theoretical analysis indicates that abstraction of a bridge H atom by a gaseous H leads to a rapid transformation of the angled to planar structure. The implications of this result is that the collisionally-activated E-bridge formation followed by its flattening effectively increases the size of “planar” aromatic precursors by combining two aromatic moieties with essentially collisional rates, instead of a slower “atom-by-atom” buildup. The faster growth speeds up PAH reaching a size when physical dimerization takes over. Furthermore, the dimerization can be further assisted by the biradicaloid valence structure of the flattened E-bridge.
On the Mechanism of Soot Nucleation. IV. Molecular Growth of the Flattened E-Bridge
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Unstable and Metastable Mesophases Can Assist in the Nucleation of Porous Crystals
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Optically Triggered Nucleation Eliminates Hydration Hysteresis in Swelling Minerals
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Molecular Dynamics Simulations of the Effects of Entanglement on Polymer Crystal Nucleation
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Understanding the Effect of Nucleation in Amorphous Solid Dispersions through Time–Temperature Transformation
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Nucleation Kinetics and Structure Evolution of Quasi-Two-Dimensional ZnO at the Air?Water Interface:
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