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Search Publications

NIST Authors in Bold

Displaying 28826 - 28850 of 74219

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

Connecting the Discrete and Continuous-Time Quantum Walks

October 16, 2008
Author(s)
Frederick Strauch
Recently, quantized versions of random walks have been explored as effective elements for quantum algorithms. In the simplest case of one dimension, the theory has remained divided into the discrete-time quantum walk and the continuous-time quantum walk

Constants, Fundamental

October 16, 2008
Author(s)
Barry N. Taylor, Peter J. Mohr
This article touches upon three main topics: (1) the motivation for the romance of the next decimal place, or why the fundamental physical constants are important and why their determination with ever smaller uncertainties can have a profound effect on

Control of Overfill Bumps in Damascene Cu Electrodeposition

October 16, 2008
Author(s)
Soo K. Kim, Daniel Wheeler, Daniel Josell, Thomas P. Moffat
Electroanalytical measurements and feature filling experiments have been conducted to study the effect of dodecyltrimethylammonium chloride (DTAC) and branched polyethyleneimine (PEI) on Cu deposition as levelers in the presence of various combinations of

Coordinated Fracture and Failure Initiation in Microcomposites

October 16, 2008
Author(s)
Gale A. Holmes, Jae H. Kim, Chang K. Moon, Walter G. McDonough
In this paper, the failure behavior of glass fiber microcomposites is investigated. E-glass fibers treated with an epoxy compatible sizing were embedded in a diglycidyl ether of bisphenol-A (DGEBA) resin cured with meta-phenylenediamine (m-PDA). Even

Coordination and Local Transport Gap in C 60 Chains on a Pentacene Template

October 16, 2008
Author(s)
Dan B. Dougherty, W Jin, J Cullen, Gregory Dutton, J Reutt-Robey, Steven W. Robey
The adsorption of C60 on a bilayer film of pentacene on Ag(111) is studied with scanning tunneling microscopy and spectroscopy. At low coverage, C60 molecules form extended linear structures due to the templating effect of the pentacene bilayer. The

Coordination Studies of Al-EDTA in Aqueous Solution

October 16, 2008
Author(s)
Orkid Coskuner, Emily A. Jarvis
The degree of aluminum toxicity is based on its complexation with organic ligands. One of these complexes is the AlEDTA- (Al=aluminum, EDTA=ethylenediaminetetraacetate), of which the structure in aqueous solution has been debated based on x-ray absorption
Displaying 28826 - 28850 of 74219