Zobrazeno 1 - 10
of 180
pro vyhledávání: '"R F, Wood"'
Publikováno v:
International Journal of Quantum Chemistry. 36:621-630
In the Introduction of the paper the different theoretical models for the prediction of high Tc superconductivity, which were done before its discovery in ceramic materials, are reviewed. After this a number of models to interpret the experimentally
Autor:
David B. Geohegan, Alexander A. Puretzky, Jeremy Jackson, Jack C. Wells, Bin Zhao, David J Styers-Barnett, H. Cui, Sreekanth Pannala, R. F. Wood, Gyula Eres, Hui Hu, Christopher M. Rouleau
Publikováno v:
physica status solidi (b). 244:3944-3949
Growth mechanisms of carbon nanotubes are investigated and compared for both high- and low-temperature synthesis methods through experiments utilizing time-resolved, in situ imaging and spectros-copy. High-speed videography and pyrometry measured the
Publikováno v:
Journal of Physics: Condensed Matter. 16:4661-4676
First-principles computational techniques are often employed in studies of heterogeneous material interfaces. In many cases the interface to be studied is not coherent or is only coherent over a small length scale and approximations to the unit cell
Publikováno v:
Physical Review B. 61:15645-15648
Through extensive ab initio total energy calculations of the {sigma}5 (210) grain boundary in TiO{sub 2} (rutile), the remarkably large rigid-body contractions found by high resolution electron microscopy and Z-contrast imaging are explored. Unlike p
Autor:
J. N. Leboeuf, J. M. Donato, David B. Geohegan, R. F. Wood, J. H. Hes, Alexander A. Puretzky, Kuan-Ren Chen, T. C. King
Publikováno v:
Physical Review B. 60:8373-8382
A self-similar theory and numerical hydrodynamic modeling is developed to investigate the effects of dynamic source and partial ionization on the acceleration of the unsteady expansion of laser-ablated material near a solid target surface. The dynami
Autor:
Ravindra P. Joshi, R. F. Wood
Publikováno v:
Journal of Applied Physics. 84:3197-3206
Electron transport in Si low-angle bicrystals is analyzed by a novel Monte Carlo molecular dynamics simulation scheme. The effect of discrete charges at the grain boundaries is studied and compared to results from one-dimensional treatments. The aver
Publikováno v:
Physical Review B. 58:1533-1543
A modeling approach for calculating the expansion of a laser-generated plasma into a background gas has been developed. Although relatively simple in structure, the model gives excellent fits to various experimental data for Si in background gases of
Publikováno v:
Applied Surface Science. :151-158
A new approach has been developed for modelling the expansion of laser-generated plumes into low pressure gases, where, initially, the mean free path may be long enough for interpenetration of the plume and background. Although relatively simple in s
Publikováno v:
Physical Review Letters. 79:1571-1574
An innovative new approach has been developed for modeling the expansion of laser-generated plumes into low-pressure gases where initially the mean free path may be long enough for interpenetration of the plume and background. The model is based on a
Autor:
Alexander A. Puretzky, Kuan-Ren Chen, J. M. Donato, D. B. Geobegan, J. N. Leboeuf, R. F. Wood, C. L. Liu
Publikováno v:
Materials Science and Engineering: B. 47:70-77
A combined theoretical and experimental effort to model various physical processes during laser ablation of solids using a variety of computational techniques is described. Currently the focus of the modeling is on the following areas: (a) rapid tran