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Journals

Artifacts That Could Be Misinterpreted as Ballistic Magnetoresistance

October 12, 2021

Author(s)

William F. Egelhoff Jr., L Gan, Erik B. Svedberg, Cedric J. Powell, Alexander J. Shapiro, Robert McMichael, J Mallett, Thomas P. Moffat, Mark D. Stiles

Theoretical physics suggests that very large magnetoresistance (MR) values might be found in certain magnetic nanocontacts if a magnetic domain wall could be...

Layer Perfection in Ultrathin, MOVPE-Grown InAs Layers Buried in GaAs(001) Studied by X-Ray Standing Wave and Photoluminescence Spectroscopy

October 12, 2021

Author(s)

J A. Gupta, Joseph Woicik, S P. Watkins, D A. Harrison, E D. Crozier, B A. Karlin

Using the In-L fluorescence produced by normal-incidence X-ray standing waves, we have measured the layer perfection and positions for ML = 1 and 1/2 (where ML...

Variations in UHMWPE Particle Morphology Result in Different Cellular and Cytokine Responses in the Murine Air Pouch Model

October 12, 2021

Author(s)

P H. Wooley, Z Song, L Mayton, S Nasser, U Cho, M C. Shen, Stephen M. Hsu

The etiology of aseptic loosening (AL) following total joint replacement arthroplasty remains unclear, but the generation of small wear particles from the...

Coating Kinetics of Fluoropolymer Process Aids for Sharkskin Elimination: The Role of Domain Size

October 12, 2021

Author(s)

D Bigio, Mathurin G. Meillon, S B. Kharchenko, David C. Morgan, Hui Zhou, S Oriani, C Macosko, Kalman D. Migler

We study the ability of fluoropolymer based polymer processing aids (PPA) to eliminate surface melt fracture (sharkskin) during extrusion of polyethylene in...

Advanced Neutron and X-Ray Techniques for Insights Into the Microstructure of EB-PVD Thermal Barrier Coatings

October 12, 2021

Author(s)

A Kulkarni, A N. Goland, H Herman, Andrew J. Allen, T A. Dobbins, F DeCarlo, J Ilavsky, S Fang, P Lawton

The ongoing quest to increase gas turbine efficiency and performance (increased thrust) provides a driving force for materials development. While improved...

Effects of Argon Gas-Cluster Ion Beam Processing on Surface Roughness, Crystalline Orientation Texture, Magnetic, and Giant Magnetoresistance Properties of Α-Fe₂O₃ Bottom Spin-Valves

October 12, 2021

Author(s)

S Bae, J H. Judy, P J. Chen, L Gan, William F. Egelhoff Jr., J Hautala

The effects of gas-cluster ion beam (GCIB) processing on the surface roughness, crystalline orientation texture, magnetic, and giant magneto resistance (GMR)...

An X-Ray Absorption Study of Stoichiometry and Bonding in the Maagnetocaloric Antiperovskite Mn₃GaC

October 12, 2021

Author(s)

L H. Lewis, D Yoder, A R. Moodenbaugh, Daniel A. Fischer, M-H Yu

The effects of carbon content were studied with magnetic and spectroscopic techniques in the imtermetallic perovskite compounds Mn3GaC, Mn3GaC0.90, and Mn3GaC0...

Mechanical Strength of Various Types of Calcium Phosphate Cements

October 12, 2021

Author(s)

Y Matsuya, S Matsuya, Joseph M. Antonucci, S. Takagi, Laurence Chow, A Akashi, A Akamine

It has been reported that organic or polymeric calcium phosphate cements can be made from reactive calcium phosphates with various organic acids or poly...

Tuning the Fragility of Polymer Melts With Antiplasticizer Additives

October 12, 2021

Author(s)

Robert A. Riggleman, K Yoshimoto, Jack F. Douglas, J J. de Pablo

Using molecular dynamics simulations, we have developed and analyzed a model that exhibits antiplasticization behavior by decreasing the glass transition...

Reactions of Chlorobenzene on the Pt (111) Surface: A Temperature Programmed Reaction and Fluorescence Yield Near Edge Spectroscopy Study

October 12, 2021

Author(s)

B M. Haines, G E. Mitchell, Daniel A. Fischer, J L. Gland

The surface reactions of chlorobenzene on Pt(111) have been studied using temperature programmed reaction spectroscopy (TPRS) and fluorescence yield near edge...

Fluctuation Effects on Surface Pattern Formation in Thin Block Copolymer Films

October 12, 2021

Author(s)

A C. Smith, Jack F. Douglas, Eric J. Amis, Alamgir Karim

Hole formation on the surface of thin block copolymer films is investigated as a function of time (t), temperature (T) and film thickness. The size of the holes...

High Sensitivity CARS Microscopy With Two Tightly SynChronized Picosecond Lasers

October 12, 2021

Author(s)

J Potman, D J. Jones, J X. Cheng, X. Xie, Jun Ye

We demonstrate a significant improvement in signal-to-noise ratio recovered from coherent anti-Stokes Raman scattering (CARS) spectroscopy/microscopy, using two...

Recent Experiments with Bose-Condensed Gases at JILA

October 12, 2021

Author(s)

D S. Hall, J R. Ensher, D S. Jin, M R. Matthews, C E. Wieman, Eric A. Cornell

We consider a binary mixture of two overlapping Bose-Einstein condensates in two different hyperfine states of 87Rb with nearly indentical magnetic moments...

Development of a Small and Portable Absolute Gravimeter

October 12, 2021

Author(s)

A L. Vitouchkine, J E. Faller

lhgh precision (10 -9-10 -8)g absolute ballistic gravimeters (ABGs) are now being used worldwide. The ballistic method is based on the measurement of time and...

Colloquium: Femtosecond Optical Frequency Combs

October 12, 2021

Author(s)

S T. Cundiff, Jun Ye

Recently there has been a remarkable synergy between the technology of precision laser stabilization and modelocked ultrafast lasers. This has resulted in...

The NIST FT 700 Vacuum Ultraviolet Fourier Transform Spectrometer: Applications in Ultraviolt Spectrometry and Radiometry

October 12, 2021

Author(s)

Ulf Griesmann, R Kling, John H. Burnett, L Bratasz

In the minds of many, Fourier transform spectrometry is restricted to applications in the infrared. In the ultraviolet, the increasingly severe demands on...

Control of the Frequency Comb From a Mode-Locked Erbium Doped Fiber Laser

October 12, 2021

Author(s)

J Rauschenberger, T M. Fortier, D J. Jones, Jun Ye, Steven T. Cundiff

We show that a stretched-pulse mode-locked fiber laser produces a well-defined frequency comb, providing a compact source of frequency combs and allowing comb...

Final Report of the SIM ⁶⁰ Co Air-Kerma Comparison (KCDB Entry SIM.RI (I)-K1)

October 12, 2021

Author(s)

C K. Ross, K Shortt, M Saravi, A Meghzifene, V M. Tovar, R A. Barbosa, C N. da Silva, F Gutt, Stephen M. Seltzer

Transfer chambers were used to compare the standards for 60Co air kerma maintained by seven laboratories. Six of the laboratories were members of the Sistema...

Measurement of Nonlinear Phase Generated in Air-Silica Microstructure Fiber

October 12, 2021

Author(s)

T M. Fortier, Jun Ye, Steven T. Cundiff, R S. Windler

We present measurementsof the nonlinear phase noise generated in air-silica microstructure fiber, which is used in carrier envelope phase stabilization schemes...

Stability of Precision Diamond Turning Processes That Use Round Nosed Tools

October 12, 2021

Author(s)

David E. Gilsinn, Matthew A. Davies, B Balachandran

A system of retarded differential equations model is developed for a diamond-turning process with chip area cut by a round nosed tool. The results are presented...

Traceability, Accreditation, Measurement Accuracy: How to Get It and How to Keep It!

October 12, 2021

Author(s)

C S. Brickenkamp, E L. Garner

Many of us in the scientific and technological arenas are measurement middlemen taking measurements provided by others, and making measurements for others. This...

Nonperturbative Transient Four-Wave-Mixing Lineshapes Due to Excitation induced Shift and Excitation Induced Dephasing

October 12, 2021

Author(s)

J M. Shacklette, Steven T. Cundiff

We numerically calculate the transient-four-wave-mixing (TFWM) response in systems that exhibit either aresonance'frequency or a dephasing rate that depends on...

Analysis of High-Resolution Infrared and CARS Spectra of ³²S¹⁸O^d3

October 12, 2021

Author(s)

Tony Masiello, N Vulpanovici, J Barber, E T. Chrysostom, J Nibler, A G. Maki, Thomas A. Blake, R L. Sams, Alfons Weber

Modeling the Radiative Properties of Silicon With Thin-Film Coatings and the Experimental Validation

October 12, 2021

Author(s)

B J. Lee, Z M. Zhang, E A. Early, D P. DeWitt

A critical issue for rapid thermal processing (RTP), a single wafer integrated circuit manufacturing process, is how to reduce the temperature measurement...

Absorption Spectroscopy of EBT Model GAFCHROMIC TM Film

October 12, 2021

Author(s)

Slobodan Devic, Tomic Nada, Zhiyu Pang, Jan Seuntjens, Ervin Podgorsak, C K. Ross, Norman V. Klassen, Christopher G. Soares

The introduction of radiochromic films has solved some of the problems associated with conventional 2D radiation detectors. Their high spatial resolution, low...

Development of an Emergency Procedures Manual Database (REPMD)

October 12, 2021

Author(s)

J J. La Rosa, P Motabar, Kenneth G. Inn, H Ziegler

A Radioanalytical Emergency Procedures Manual Database (REPMD) is currently under development at NIST. Its main objective is to act as a valuable reference and...

Ultrafast Spin Phenomena in Highly Excited N-Doped GaAs

October 12, 2021

Author(s)

R Bratschitsch, Z Chen, Steven T. Cundiff

We perform time-resolved Faraday rotation exeriments on undoped and n-doped GaAs samples at high optical excitation densities. The Faraday rotation signal...

Direct Optical Measurement of the Dither Amplitude of a Near-Field Microscope Aperture on a Nanometer

October 12, 2021

Author(s)

B Dragnea, J Szarko, J Preusser, S R. Leone

A new confocal optical method for measuring the dithering amplitude of an aperture near-field optical microscope tip is presented. The methodis direct and...

Efficient Computation of Optical Forces With the Coupled Dipole Method

October 12, 2021

Author(s)

P C. Chaumet, Adel Rahmani, A Sentenac, Garnett W. Bryant

We present computational techniques to compute in an efficient way optical forces on arbitrary nanoobjects using the coupled dipole method. We show how the time...

Microwave-Based Structure and Four-Simensional Morphed Intermolecular Potential for HI-CO₂

October 12, 2021

Author(s)

Wolfgang Jabs, Fabrice Willaert, Blake McElmurry, Luis Rivera-Rivera, Raffaele Montuoro, R R. Lucchese, J W. Bevan, R D. Suenram

Microwave spectra of the four isotopomers, HI-12C16O2, HI-12C18O2, HI-12C18O16O, and HI-12C16O18O have been recorded using pulsed-nozzle Fourier-transform...

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