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Displaying 30226 - 30250 of 74507

Coherent Rayleigh Scattering

October 16, 2008
Author(s)
J H. Grinstead, P F. Barker
Nonresonant four-wave mixing in rarefied gases in which the nonlinearity arises from microscopic velocity perturbations induced by electrostriction has been analyzed theoretically and experimentally. The spectral distribution of the signal beam was

Comment on 'Laterally Squeezed Excitonic Wave Function in Quantum Wires'

October 16, 2008
Author(s)
Garnett W. Bryant, Y B. Band, Paul S. Julienne
Recent magnetophotoluminescence data on T-shaped quantum wires is reinterpreted based on a detailed theory of magnetoexcitons in T-shaped quantum wires. We show that the previous analysis greatly overestimates exciton squeezing in T-shaped wires.

Comment on Intrinsic Gap States in Semiconductor Nanocrystals

October 16, 2008
Author(s)
W Jaskolski, R -. Oszwaldowski, Garnett W. Bryant
We comment on the paper Intrinsic Gap States in Semiconductor Nanocrystals. We show that the predicted gap states are nanphysical and should not be used to interpret data.

Comment on Melkman's Convex Hull Algorithm

October 16, 2008
Author(s)
David S. Bright
The input to the elegant and simple algorithm by Melkman must not be three collinear points. Otherwise, the algorithm correctly removes collinear points.

Comments on the Discrete Variable Representation

October 16, 2008
Author(s)
B I. Schneider, N Nygaard
We discuss the application of the Discrete Variable Representation to Schr dinger problems which involve singular Hamiltonians. Unlike recent authors who invoke transformations to rid the eigenvalue equation of singularities at the cost of added complexity

Comments on the Entropy of NonEquilibrium Steady States

October 16, 2008
Author(s)
D J. Evans, R Lamberto
We discuss the entropy of nonequilibrium steady states. We show that the so-called spontaneous entropy production of reversible deterministic nonequilibrium systems results from the collapse of such systems towards an attractor which is of lower dimension

Complementary Experimental Techniques for Multi-Scale Modeling of Plasticity

October 16, 2008
Author(s)
Lyle E. Levine, Gabrielle G. Long, David R. Black
Some recently-developed experimental techniques, such as in situ ultra-small-angle X-ray scattering (USAXS), have demonstrated a capability for measuring aspects of dislocation structure evolution that are inaccessible to other experimental methods

Compositional Control in Electrodeposition of FePt Films.

October 16, 2008
Author(s)
J Mallett, Erik B. Svedberg, S Sayan, Alexander J. Shapiro, William F. Egelhoff Jr., Thomas P. Moffat
A series of smooth Fe-Pt thin film alloys have been grown by electrodeposition at potentials positive to that required to deposit elemental Fe. XRD of 100 nm thick FePt films indicate the formation of fine grained face centered cubic alloys, and the

Computational Materials Science and Industrial R&D: Accelerating Progress

October 16, 2008
Author(s)
S C. Glotzer, James A. Warren
Computtional materials research has made major advances over the past decade in accelerating the design, processing and performance of technologically important materials. materials simulation is, however, still in its infancy, as the nature of mateirals

Computer Assisted Expert Evaluation of NIST/NIH/EPA Mass Spectral Library

October 16, 2008
Author(s)
Anzor I. Mikaia, Stephen E. Stein, Vladimir G. Zaikin, D Zhu
The methods used to build a high quality, comprehensive reference library of positive ion EI mass spectra will be discussed. A description of the development of the present system of evaluation will be presented with emphasis on establishing the criteria

Cone Emission Theory

October 16, 2008
Author(s)
B D. Paul, J W. Cooper, Alan Gallagher, M G. Raymer
A time-dependent theory of cone emission for near-resonant propagation of laser light in an atomic vapor is presented which includes full propagation for the laser and side-bands in a non-linar two-level medium. The density matrix equations for the dipole
Displaying 30226 - 30250 of 74507
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