SEARCH · Engineering Papers
Results for “bonding”
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.
Surface-catalyzed dehydrogenation and intermolecular C C bond formation at peripheral alkyl units on Cu(100) and Au(111)
Not Available
Charting the evolution of the U.S. solar PV installation industry and its bonds with other skilled trades
Not Available
Nanostructure and bonding of zirconium diboride thin films studied by X-ray spectroscopy
Abstract not provided
A Chemical Understanding of the Band Convergence in Thermoelectric CoSb 3 Skutterudites: Influence of Electron Population, Local Thermal Expansion, and Bonding Interactions
N-Type skutterudites, such as Yb x Co 4 Sb 12 , have recently been shown to exhibit high valley degeneracy with possible band convergence, explaining the excellent thermoelectric efficiency of these materials. Using a combined theoretical and experimental approach involving temperature-dependent synchrotron diffraction, molecular orbital diagrams, and computational studies, the chemical nature of critical features in the band structure is highlighted. We identify how n-type doping on the filler site induces structural changes that are observed in both the diffraction data and computational results. Additionally, we show how chemical n-type doping slightly alters the electronic band structure, moving the high-valley degeneracy secondary conduction band closer to the primary conduction band and thus inducing band convergence.
Covalency is Frustrating: La 2 Sn 2 O 7 and the Nature of Bonding in Pyrochlores under High Pressure–Temperature Conditions
Abstract not provided
Benchmark Calculations for Bond Dissociation Enthalpies of Unsaturated Methyl Esters and the Bond Dissociation Enthalpies of Methyl Linolenate
Explore the source record for details and available documents.
Predicting Promoter-Induced Bond Activation on Solid Catalysts Using Elementary Bond Orders
Explore the source record for details and available documents.
Countercations Control Local Specific Bonding Interactions and Nucleation Mechanisms in Concentrated Water-in-Salt Solutions
One of the continuing challenges presented in aqueous salt solutions is to understand ion association reactions driving dynamic demixing from solvation, complexation and solute clustering. The problems understanding this phenomenon are exacerbated in the highly-concentrated water-in-salt electrolytes, where the deficiency of water leads to a dramatic retardation of solvating water and formation of extended solvent-solute clustering networks. By probing microscopic dynamics of water and prenucleation clusters using quasi-elastic neutron scattering and proton nuclear magnetic resonance spectroscopy, we observed contrasting mechanistic specifics of ion-water mobilities in highly-concentrated Na+- vs. K+-based aluminate solutions (diffusion coefficients of 0.2 vs. 2.6?10-10m2s-1 at 293 K, respectively). The magnitude of the differences is far beyond the kosmotropic (Na+) and chaotropic (K+) effects typically understood at low ionic concentrations. The distinct crystallization mechanisms observed in analogous deuterated systems further imply that different prenucleation cluster dynamics and network packing morphologies can either frustrate or promote crystallization, as described by non-classical nucleation theory.
From Carbene-Dithiolene Zwitterion Mediated B–H Bond Activation to BH 3 ·SMe 2 -Assisted Boron–Boron Bond Formation
Not Available
Hydrocarbon Oxidation by an Exposed, Multiply Bonded Iron(III) Oxo Complex
Not Available
Theoretical and Experimental Studies of C-C versus C-O Bond Scission of Ethylene Glycol Reaction Pathways via Metal-Modified Molybdenum Carbides
Explore the source record for details and available documents.