Now showing items 131-140 of 6655
Synthesis and magnetic properties of CoPt nanoparticles
(The American Institute of Physics, 2004-06-01)
High magnetocrystalline anisotropy CoPt particles with an average size of 8 nm were synthesized by the superhydride reduction of CoCl2CoCl2 and Pt(acac)2Pt(acac)2 at a high temperature. As-made particles showed a disordered ...
Ion characteristics of laser-produced plasma using a pair of collinear femtosecond laser pulses
(The American Institute of Physics, 2003-07-21)
Femtosecond laser-pulse absorption is studied in silicon ablation plasmas by means of a pair of identical 1016 W/cm21016W/cm2 collinear pulses separated on a picosecond time scale. The second laser-pulse modifies ionic ...
Electron Relaxation and Molecular Vibrations: Triatomic Systems of the First‐Row Elements, the Methyl Radical, and Diazomethane and Ketene
(The American Institute of Physics, 1970-03-15)
The well‐known second‐order perturbation method is used to correlate the bond–bond interaction constants in ground and excited electronic states of triatomic systems of the first‐row elements, and unusual force constants ...
Studying artificial life with cellular automata
(Elsevier, 1986)
Biochemistry studies the way in which life emerges from the interaction of inanimate molecules. In this paper we look into the possibility that life could emerge from the interaction of inanimate artificial molecules. ...
Optical method for inspecting surface defects inside a small bore
(2010-01)
Most automotive powertrain parts made of castings have surface defects such as pores. However, detecting pores inside small diameter bores is a challenge because of the limited dimensional accessibility. Adding to this ...
The long time behavior of a finite amplitude shear Alfven wave in a warm plasma
(IOP Publishing Ltd, 1976-10-01)
The long time behavior of a monochromatic, finite amplitude shear Alfven wave is studied by means of the Krylov-Bogoliubov-Mitropolsky perturbation technique. The plasma model is assumed to be described by the linearly ...
Nonclassical crossovers in binary reactions in one-dimensional systems
(Elsevier, 1994-01)
We examine the crossover behavior for the A + A --> O and A + B --> O reactions, which are highly nonclassical for a random initial distribution of reactants. We find that both reactions quickly depart from the ...
Self-assembled morphologies of monotethered polyhedral oligomeric silsesquioxane nanocubes from computer simulation
(The American Institute of Physics, 2005-11-08)
Self-assembly of functionalized nanoscale building blocks is a promising strategy for “bottom-up” materials design. Recent experiments have demonstrated that the self-assembly of polyhedral oligomeric silsesquioxane (POSS) ...
Modelling of composition changes during F-region storms: a reassessment
(Elsevier, 1991)
A recalculation of the global changes of thermospheric gas composition, resulting from strong heat inputs in the auroral ovals, shows that (contrary to some previous suggestions) widespread increases of mean molecular mass ...