Journals

Tips and Tricks for Characterizing Shape Memory Alloy Wire: Part 4 Thermo-mechanical Coupling

January 31, 2011

Author(s)

Mark A. Iadicola, Christopher B. Churchill, John A. Shaw

This is the fourth paper in our series, identifying unusual phenomena and providing recommendations for the thermo- mechanical characterization of shape memory...

Train the Trainer: Did they Learn? Who Cares?

January 31, 2011

Author(s)

Georgia L. Harris

As metrologists, we think we are good (even expert) at measurements. But, our subject matter expertise is most often in the world of science, and not...

Characterization of Flow Oblique to a Circular Cylinder with Low Aspect Ratio Using 3-D Detached Eddy Simulation

January 31, 2011

Author(s)

Dong Hun Yeo, Nicholas P. Jones

Large-amplitude vibrations of stay cables in cable-stayed bridges can threaten the safety and serviceability of the structures. Understanding of the excitation...

An Upper Bound on Parity Violating Neutron Spin Rotation in He-4

January 31, 2011

Author(s)

Jeffrey S. Nico, William M. Snow, Christopher D. Bass, Tiffany D. Bass, B. E. Crawford, K. F. Gan, B R. Heckel, D Lou, D M. Markoff, A M. Micherdzinska, Hans P. Mumm, A. K. Opper, M Sarsour, E I. Sharapov, H E. Swanson, S. C. Walbridge, V Zhumabekova

We report an upper bound on parity violating neutron spin rotation in He-4. This experiment is the most sensitive search for neutron weak optical activity yet...

A Measurement of the Parity Violating Gamma-ray Asymmetry in the Capture of Polarized Cold Neutrons on Protons

January 31, 2011

Author(s)

Thomas Gentile, M T. Gericke, R. Alarcon, S. Balascuta, L. Barron, C S. Blessinger, J D. Bowman, R D. Carlini, W.C. Chen, T E. Chupp, C. Crawford, S. Covrig, M Dabaghyan, N. Formin, S J. Freedman, R C. Gillis, G L. Greene, F W. Hersman, T. Ino, Gordon L. Jones, B Lauss, M Leuschner, W R. Lozowski, R Mahurin, Y Masuda, J Mei, G S. Mitchell, S Muto, H Nann, S A. Page, S I. Penttila, W D. Ramsay, A. Salas-Bacci, S Santra, Katelynn A. Sharma, P.-N. Seo, E I. Sharapov, T B. Smith, William M. Snow, W S. Wilburn, V Yuan

The NPDGamma collaboration reports results from the first phase of a measurement of the parity violating up-down asymmetry A_gamma with respect to the neutron...

In-situ Polarized He3-Based Neutron Polarization Analyzer for SNS Magnetism Reflectometer

January 31, 2011

Author(s)

W-T Lee, X Tong, J. Pierce, M. Fleenor, A. Ismaili, JL Robertson, Wangchun Chen, Thomas R. Gentile, A. Hailemariam, R J. Goyette, A. Parizzi, V Lauter, F. Klose, H. Kaiser, C. Lavelle, DV Baxter, G L. Jones, J. Wexler, L. McCollum

We report here the construction and neutron transmission test results of an in-situ polarized 3He-based neutron polarization analyzer system for the Magnetism...

Loss of 45 Da from a2 Ions and Preferential Loss of 48 Da from a2 Ions Containing Methionine in Peptide Ion Tandem Mass Spectra

January 29, 2011

Author(s)

Yamil Simon, Pedatsur Neta, Xiaoyu Yang, Stephen E. Stein

While analyzing tandem mass spectra of tryptic tripeptides, intense unassigned peaks were observed, which correspond to a neutral loss of 45 Da from a 2 ions...

Use of Phosphor Image Plates for Measuring Intensities in Vacuum Ultraviolet Spectra

January 28, 2011

Author(s)

Gillian Nave, Craig J. Sansonetti, Csilla Szabo, John J. Curry, Darren Smillie

We describe the use of phosphor image plates for recording spectra in the vacuum ultraviolet (VUV) and for determining accurate relative and absolute...

The Lung Image Database Consortium (LIDC) and Image Database Resource Initiative (IDRI): A Completed Reference Database of Lung Nodules on CT Scans

January 28, 2011

Author(s)

Charles D. Fenimore, Samuel Armato, Denise Aberle, Matthew Brown, Claudia Henschke, Michael McNitt-Gray, Heber MacMahon, Geoffrey McLennan, Charles R. Meyer, Anthony P. Reeves, David F. Yankelevitz

The development of computer-aided diagnostic (CAD) methods for lung nodule detection, classification, and quantitative assessment can be facilitated through a...

Neutron Activation Analysis: A Primary Method of Measurement

January 27, 2011

Author(s)

Robert R. Greenberg, Bode Peter, Fernandes Elisabete

Neutron activation analysis (NAA), based on the comparator method, has the potentials fulfilling the requirements of a primary ratio method as defined in 1998...

Compositional Mapping of the Surface and Interior of Mammalian Cells at Submicrometer Resolution

January 26, 2011

Author(s)

Christopher Szakal, Kedar Narayan, Jing Fu, Jonathan A. Lefman, Sriram Subramaniam

We present progress towards imaging of chemical species within intact mammalian cells using secondary ion mass spectrometry, with simultaneous mapping of...

Approximate theoretical model for the five electronic states (¿ = 5/2, 3/2, 3/2, 1/2, 1/2) arising from the ground 3d9 configuration in nickel halide molecules and for the rotational levels of the two ¿ = 1/2 states in this manifold

January 25, 2011

Author(s)

Jon T. Hougen

This paper is divided into two parts. In the first part an effective Hamiltonian for a non-rotating diatomic molecule containing only crystal-field and spin...

Vertical Release of Hydrogen in a Partially Enclosed Compartment : Role of Wind and Buoyancy

January 25, 2011

Author(s)

Kuldeep R. Prasad, William M. Pitts, Jiann C. Yang

The natural and wind driven mixing and dispersion of hydrogen released in an accidental manner in a partially enclosed compartment with two vents is...

Quantum information processing and metrology with trapped ions

January 25, 2011

Author(s)

David J. Wineland, Dietrich G. Leibfried

The use of trapped atomic ions in the field of quantum information processing is briefly reviewed. We summarize the basic mechanisms required for logic gates...

Neutron Scattering Study of Hydrogen Dynamics in Coarse-Grained and Nanostructured ZrCr₂H₃

January 25, 2011

Author(s)

Alexander V. Skripov, Terrence J. Udovic, John J. Rush, M.A. Uimin

Synergistic Proliferation and Osteogenic Differentiation Activity of Human Bone Marrow Stromal Cells on BMP-2 Derived and RGD Peptide Concentration Gradients

January 25, 2011

Author(s)

Nicole M. Moore, Nancy Lin, Nathan D. Gallant, Matthew L. Becker

Advancing the materials science of concrete with supercomputers

January 24, 2011

Author(s)

Jeffrey W. Bullard, Edward Garboczi, William L. George, Nicos Martys, Steven G. Satterfield, Judith E. Terrill

Supercomputers are renowned for being used on grand challenge problems like global weather patterns, nuclear device virtual testing, galaxy formation...

Making optical atomic clocks more stable with 10^-16 level laser stabilization

January 23, 2011

Author(s)

Andrew D. Ludlow, Yanyi Jiang, Nathan D. Lemke, Richard W. Fox, Jeffrey A. Sherman, Long-Sheng Ma, Christopher W. Oates

The superb precision of an atomic clock is derived from its stability. Atomic clocks based on optical (rather than microwave) frequencies are attractive because...

Characterization and Purification of Commercial SPS and MPS by Ion Chromatography and Mass Spectrometry

January 21, 2011

Author(s)

Ryan G. Brennan, Melissa Phillips, Liang Yueh Ou Yang, Thomas Moffat

SPS (bis-(3-sulfopropyl) disulfide) is an essential electrolyte additive used in the fabrication of copper interconnects by electrodeposition. The process is...

Optomechanical Transduction of an Integrated Silicon Cantilever Probe Using a Microdisk Resonator

January 20, 2011

Author(s)

Kartik A. Srinivasan, Houxun H. Miao, Matthew T. Rakher, Marcelo I. Davanco, Vladimir A. Aksyuk

Tranmission Electron Microscopy with a Liquid Flow Cell

January 20, 2011

Author(s)

Kate L. Klein, Ian M. Anderson, N. de Jonge

The imaging of microscopic structures at nanometer-scale spatial resolution in a liquid environment is of interest for a wide range of studies. Transmission...

Empirical Evidence for Increased False Reject Rate with Time Lapse in ICE 2006

January 20, 2011

Author(s)

P J. Phillips, Kevin W. Bowyer, Patrick J. Flynn, Sarah E. Baker

We present results of the first systematic study to investigate the degree to which template aging occurs for iris biometrics. Our experiments use an image data...

Bilateral NIST-PTB Comparison of Spectral Responsivity in the VUV

January 20, 2011

Author(s)

Uwe Arp, Ping-Shine Shaw, Zhigang Li, Alexander Gottwald, Mathias Richter

To compare the calibration capabilities for the spectral responsivity in the vacuum-ultraviolet spectral region between 135 nm and 250 nm, PTB and NIST agreed...

Transverse susceptibility as a probe of the magnetocrystalline anisotropy driven phase transition in Pr_{0.5}Sr_{0.5}CoO_{3}

January 19, 2011

Author(s)

Natalie F. Huls, N S. Bingham, M. H. Phan, H. Srikanth, D. D. Stauffer, C. Leighton

Half-doped Pr_{1-x}Sr_{x}CoO_{3} (x=0.5) displays anomalous magnetism most notably manifest in the field-cooled magnetization versus temperature curves under...

Simultaneous Positioning and Orientation of a Single Nano-object by Flow Control: theory and simulations

January 19, 2011

Author(s)

Pramod P. Mathai, Andrew J. Berglund, James A. Liddle, Benjamin Shapiro

In this paper we describe a method to simultaneously control both the position and orientation of single nano-objects in fluids by precisely controlling the...

Diffraction study of the retained austenite content in TRIP steels

January 19, 2011

Author(s)

Thomas H. Gnaupel-Herold, Adam Abel Creuziger

The results of a study of using neutron diffraction for determining the retained austenite content of TRIP steels are presented. The study covers a wide area of...

NMR Characterization of the Formation Kinetics and Structure of Di-O-Benzylidene Sorbitol Gels Self-Assembled in Organic Solvents

January 19, 2011

Author(s)

David L. VanderHart, Jack F. Douglas, Steven Hudson, Joseph M. Antonucci, Elizabeth A. Wilder

The molecule 1,3:2,4-Di-O-Benzylidene sorbitol (DBS) is a common gelator that forms thermally reversible gels in diverse organic solvents. Solid state 13C and...

Microfluidics Measurements of Interfacial Rheology

January 18, 2011

Author(s)

Jeffrey D. Martin, Joie N. Marhefka, Kalman D. Migler, Steven D. Hudson

The bulk properties and structural characteristics of emulsions arise substantially from their interfacial rheology, which depends strongly on surfactant mass...

Controlled in situ Nanocavitation in Polymeric Materials

January 18, 2011

Author(s)

Yajun Cheng, Joseph M. Antonucci, Steven Hudson, Nancy Lin, Xinran Zhang, Sheng Lin-Gibson

A new strategy to produce polymer-inorganic composites with ultra low volume shrinkage has been developed. Small amount of cavitation agent, acetone...

Simulation of lattice strain due to CNT-metal interface

January 17, 2011

Author(s)

Alexander Y. Smolyanitsky, Vinod K. Tewary

We report an atomistic molecular statics study of strains in single wall carbon nanotubes (SWCNTs) interfaced with a planar nickel surface. We calculate axial...