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Journals

Ultrafast Dynamics of Gold-Based Nanocomposite Materials

May 1, 2003

Author(s)

Joseph S. Melinger, V D. Kleiman, D McMorrow, Franziska Grohn, Barry J. Bauer, Eric J. Amis

The ultrafast electron dynamics are investigated for small ((2.5 4.0) nm average diameter) Au nanoparticles contained in two different types of organic...

Shielding Effectiveness Measurements of Materials in Nested Reverberation Chambers

May 1, 2003

Author(s)

Christopher L. Holloway, David A. Hill, John M. Ladbury, Galen H. Koepke, R. Garzia

In this paper, we present a technique for determining the shielding effectiveness of materials from nested reverberation chamber measurements. The new approach...

The Alternating Direction Implicit (ADI) Formulation of the Finite-Difference Time-Domain (FDTD) Method: Algorithm and Material Dispersion Implementation

May 1, 2003

Author(s)

Shawn W. Staker, Christopher L. Holloway, Alpesh Bhobe, Melinda Piket-May, Tobin A. Driscoll

The ADI-FDTD technique is an unconditionally stable time-domain numerical scheme, allowing the Δ}t time step to be increased beyond the Courant-Friedrichs-Lewy...

QoS Recovery Schemes Based on Differentiated MPLS Services in All-Optical Transport Next Generation Internet

May 1, 2003

Author(s)

J K. Patel, S U. Kim, David H. Su

The Internet is evolving from best-effort service toward an integrated or differentiated service framework with Quality-of-Service (QoS) assurances that are...

Reference Material 8457, Ultra High Molecular Weight Polyethylene 0.5 cm Cubes

May 1, 2003

Author(s)

B M. Fanconi, J A. Tesk, William F. Guthrie

The geometric and surface features of a new NIST reference material, RM 8457 are presented. This reference material is composed of Ultra High Molecular Weight...

Magnetic and Structural Characterization and Ferromagnetic Resonance Study of Thin Film HITPERM Soft Magnetic Materials for Data Storage Applications

May 1, 2003

Author(s)

Hideyuki Okumura, D J. Twisselmann, Robert McMichael, M Q. Huang, Y N. Hsu, D E. Laughlin, M E. McHenry

HITPERM/SiO 2 single and multilayer thin films have been produced using a target composition of (Fe 70Co 30) 88}Zr 7}B 4}Cu 1}. The as-deposited HITPERM film...

Highly Deleterious Role of Small Amounts of Carbon on the Giant Magnetoresistance Effect

May 1, 2003

Author(s)

D X. Yang, E J. Repetski, H D. Chopra, P J. Chen, William F. Egelhoff Jr.

Carbon (in the form of hydrocarbons) is a common contaminant in high and ultra-high vacuum systems, and easily gets incorporated in films during deposition...

Magnetoresistance Magnetometry of (Ni₈₀Fe₂₀)_1-xIr_x Wires with Varying Anisotropic Magnetoresistance Ratio

May 1, 2003

Author(s)

C A. Vaz, E Blackburn, M Klaui, J A. Bland, L Gan, William F. Egelhoff Jr., E Cambril, G Faini, W Wernsdorfer

We report room and low temperature magnetoresistance measurements on sub-micrometer scale elements (wires and crosses, 1.0, 0.5 and 0.1 m) of (Ni 80Fe 20) 1-xIr...

Comprehensive Microstructural Characterization and Predictive Property Modelling of Plasma-Sprayed Zirconia Coatings

May 1, 2003

Author(s)

A Kulkarni, Z G. Wang, T Nakamura, S Sampath, A N. Goland, Gabrielle G. Long, H Herman, J. Allen, J Ilavsky, G J. Long, J Frahm, R W. Steinbrech

hieving control of the microstructure of plasma-sprayed thermal-barrier coating (TBC) systems offers an opportunity to tailor coating properties to demanding...

Co Layer Thickness Dependence of Exchange Biasing For IrMn/Co and FeMn/Co

May 1, 2003

Author(s)

K A. Seu, H Huang, J F. Lesoine, H D. Showman, William F. Egelhoff Jr., L Gan, A C. Reilly

We present a high resolution study of the ferromagnetic layer thickness dependence of exchange bias field (H EB) and coercivity (H C) in IrMn/Co and FeMn/Co...

Tuning the Response of Magnetic Suspensions

May 1, 2003

Author(s)

M. Chen, L Sun, John E. Bonevich, Daniel H. Reich, C L. Chien, P C. Searson

The magnetic properties of multilayer ferromagnetic/nonmagnetic (FM/NM) nanowires can be tailored by controlling the composition and length of the FM and NM...

Comparative Study of the Electronic Structure of Ternary Superconductors MoRuP and ZrRuP in the Orthorhombic and Hexagonal Phases

May 1, 2003

Author(s)

W Y. Ching, Y N. Xu, Jihui Yang, Winnie Wong-Ng

The electronic structures of the ternary superconductors MoRuP and ZrRuP in the orthorhombic (o-) and hexagonal (h-) phases were calculated by a first...

Fluctuating Field Calculations for a Bimodal Medium

May 1, 2003

Author(s)

S Rao, Lawrence H. Bennett, Edward Della Torre, P J. Chen, R A. Fry

Bimodal magnetic behavior, has been observed in a multilayer film. In that film the Kerr rotation and ellipticity exhibit magneto-optic hystersis loops with two...

Comprehensive Microstructural Characterization and Predictive Property Modeling of Plasma-Sprayed Zirconia Coatings

May 1, 2003

Author(s)

A Kulkarni, Z G. Wang, T Nakamura, S Sampath, A N. Goland, H Herman, Andrew J. Allen, J Ilavsky, Gabrielle G. Long, J Frahm, R W. Steinbrech

Quantitative microstructure characterization to better understand processing-microstructure-property correlations is of considerable interest in plasma sprayed...

Intermixing of Aluminum-Magnetic Transition Metals Bilayers

May 1, 2003

Author(s)

J D. Buchanan, T P. Hase, B K. Tanner, P J. Chen, L Gan, Cedric J. Powell, William F. Egelhoff Jr.

Grazing incidence x-ray scattering has been used to study interfacial intermixing in thin films of aluminum/transition metal bilayers grown by dc magnetron...

Orientation of Carbon Nanotubes in a Sheared Polymer Melt

May 1, 2003

Author(s)

Erik K. Hobbie, Haonan Wang, H W. Kim, Sheng Lin-Gibson, E A. Grulke

Optical measurements of the shear response of dilute ensembles of multi-walled carbon nanotubes dispersed in a polybutadiene melt are presented. At low shear...

Influence of Cross-link Density on the Thermal Properties of Thin Polymer Network Films

May 1, 2003

Author(s)

Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, Wen-Li Wu

Cross-linked epoxy network films were cast onto silicon wafers with a variety of surface treatments. X-ray reflectivity was used to characterize their electron...

Cooling and Trapping of Atomic Strontium

May 1, 2003

Author(s)

X Xu, T Loftus, John L. Hall, Alan Gallagher, Jun Ye

We present a detailed investigation of the magneto-optical trap dynamics of alkarne-earth 88Sr atoms. The experimental results establish a firm confirmation of...

Laboratory kinetics of C₂H radical reactions with ethane, propane and n-butane at T = 96-296 K: Implicatiions for Titan

May 1, 2003

Author(s)

J E. Murphy, A B. Vakhtin, S R. Leone

The kinetics of the reactions of C 2H radical with ethane (K 1), propane (k 2), and n-butane (k 3) are studied over the temperature range of T=96-296 K with a...

A Sensitive Very Large Array Search for Small-Scale Glycine Emission Toward OMC-1

May 1, 2003

Author(s)

J M. Hollis, J A. Pedelty, Lewis E. Snyder, P R. Jewell, Francis J. Lovas, Patrick Palmer, S Y. Liu

We have conducted a deep Q-band (lambda similar to 7 mm) search with the Very Large Array (VLA) toward OMC-1 for the lowest energy conformation ( conformer I)...

Current-Induced Spin-Wave Excitations in a Single Ferromagnetic Layer

May 1, 2003

Author(s)

Yi Ji, C L. Chien, Mark D. Stiles

Evidence for a current induced spin-transfer torque effect has been investigated in a series of point contacts to single ferromagnetic layers. At specific...

Foreign Gas Pressure Broadening and Shifts of the 2S-4S Two-Photon Transition in Lithium

May 1, 2003

Author(s)

W DeGraffenreid, S C. Campbell, Craig J. Sansonetti

We have observed broadening and shift of the 2S-4S Doppler-free two-photon transition of atomic Li by collisions with neon and argon buffer gases in a heat-pipe...

First High-Resolution Analyses of the Ņ₈ and Ņ₈ + Ņ₉ Spectral Regions of ³⁵ CIONO₂: Determination of the Ņ₉ Band Centre

May 1, 2003

Author(s)

J.- M. Flaud, Walter J. Lafferty, J Orphal, M Birk, G Wagner

A ro-vibrational analysis of the C-type Ņ 8 fundamental band of 35CIONO 2 as well as the hot band, Ņ 8 + Ņ 9 - Ņ 9, has been carried out using a Fourier...

Quantum Computer Architecture Using Nonlocal Interactions

May 1, 2003

Author(s)

G K. Brennen, D Song, Carl J. Williams

Several authors have described the basic requirements essential to building a scalable quantum computer. Because many physical implementation schemes for...

Quantum-Computer Architecture Using Nonlocal Interactions

May 1, 2003

Author(s)

G K. Brennen, D Song, Carl J. Williams

Many protocols for quantum information processing use a control sequence or circuit of interactions between qubits and control fields wherein arbitrary qubits...

EBIT Diagnostics Using X-ray Spectra of Highly Ionized Ne

May 1, 2003

Author(s)

M Matranga, M Barbera, A Maggio, G Peres, S Serio, E Takacs, E Silver, John D. Gillaspy, H. Schnopper, J M. Laming, J. Beeman, E. E. Haller, N. Madden

We have carried out a detailed analysis of highly ionized neon spectra collected at the NIST EBIT using an NTD germanium X-ray microcalorimeter developed at the...

Water Vapor Uptake in Photolithographic Polymers Observed by Infrared Near-Field Scanning Optical Microscopy in a Controlled Environment

May 1, 2003

Author(s)

L A. McDonough, B Dragnea, J Preusser, S R. Leone, W D. Hinsberg

An infrared Near-field Scanning Optical Microscope (NSOM) is used in vacuum to detect water vapor uptake in thin polymer films for the first time. A chemically...

Single-Stage Sub-Doppler Cooling of Alkaline Earth Atoms

May 1, 2003

Author(s)

X Xu, T Loftus, J W. Dunn, C H. Greene, John L. Hall, Alan Gallagher, Jun Ye

We report the first experimental study of sub-Doppler cooling in alkaline earth atoms ( 87Sr) enabled by the presence of nuclear spin-oriented magnetic...

Microscopic Structure of a Vortex Line in a Dilute Superfluid Fermi Gas

May 1, 2003

Author(s)

N Nygaard, G M. Bruun, Charles W. Clark, D L. Feder

The microscopic properties of a single vortex in a dilute superfluid Fermi gas at zero temperature are examined within the framework of self-consistent...

Cascade Transition X-Rays From Electron Capture Into Highly Charged Ions in Collisions With Neutral Gas Targets

May 1, 2003

Author(s)

H Tawara, E Takacs, L P. Ratliff, John D. Gillaspy, K Tokesi

X-rays originating from a series of the cascades after electron capture into highly excited Rydberg states have been observed from low states have been observed...

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