Journals

In situ Formation of Silver Nanoparticles in Photocrosslinking Polymers

February 2, 2011

Author(s)

Yajun Cheng, Diana N. Zeiger, John A. Howarter, Xinran Zhang, Nancy Lin, Joseph M. Antonucci, Sheng Lin-Gibson

Nanocomposites of difunctional methacrylate polymer/silver nanoparticles have been synthesized by coupling photoinitiated free radical polymerization with in...

The program LOPT for least-squares optimization of energy levels

February 1, 2011

Author(s)

Alexander Kramida

The article describes a program that solves the least-squares optimization problem for finding the energy levels of a quantum-mechanical system based on a set...

Microscale thermogravimetric analysis for determining nanoparticle purity and surface coverage

February 1, 2011

Author(s)

Elisabeth Mansfield

Minimum-Risk Layer 2 Trigger Levels for Proactive Media-Independent Handovers

February 1, 2011

Author(s)

David W. Griffith, Alexandre Delye, Nada T. Golmie

Anticipated handovers that use Link Going Down (LGD) and Link Down (LD) trigger events require the network operator to set the LGD trigger high enough that the...

Nanomaterial Toxicity: Emerging Standards and Efforts to Support Standards Development

February 1, 2011

Author(s)

Laurie E. Locascio, Vytautas Reipa, Justin M. Zook, Richard C. Pleus

For the first time in the history of industrialization, nanotechnology offers the unique opportunity to consider material safety ahead of its full...

Preparation, Magnetism and Electronic Structures of Cadmium Technetates

February 1, 2011

Author(s)

Efrain E. Rodriguez, Frederic Poineau, Anna Llobet, J. D. Thompson, Ram Seshadri, Anthony K. Cheetham

Metal-Molecule-Silicon Junctions Produced by Flip Chip Lamination of Dithiols

February 1, 2011

Author(s)

Michael A. Walsh, Curt A. Richter, Christina A. Hacker

The integration of organic molecules with silicon is increasingly being studied for potential uses in hybrid electronic devices. Creating dense and highly...

Directed 2D-to-3D pattern transfer method for controlled fabrication of topologically complex three- dimensional nanostructures in silicon

February 1, 2011

Author(s)

Konrad Rykaczewski, Owen J. Hildreth, Ching P. Wong, Andrei G. Fedorov, John H. Scott

A process allowing for control over the 3D motion of catalyst nanostructures during Metal-assisted Chemical Etching by their local pinning prior to etching is...

Electron Beam Induced Growth of TiO2 Nanostructures

February 1, 2011

Author(s)

Renu Sharma

We report the evolution of TiO2 nanostructures when Au nanoparticles, supported on single crystal TiO2 substrates, were heated in ~2 Torr of flowing O2 in an...

Approximating the Number of Bases for Almost All Matroids

February 1, 2011

Author(s)

Brian D. Cloteaux

We define a class of matroids A for which a fully polynomial randomized approximation scheme (fpras) exists for counting the number of bases of the matroids. We...

Characterization of Power-to-Phase Conversion in High-Speed P-I-N Photodiodes

February 1, 2011

Author(s)

Jennifer A. Taylor, Shubahshish Datta, Archita Hati, Craig Nelson, Franklyn Quinlan, Abhay Joshi, Scott Diddams

Fluctuations of the optical power incident on a photodiode can be converted into phase fluctuations of the resulting electronic signal due to nonlinear...

Development of Ultrasmall-Angle X-ray Scattering - X-ray Photon Correlation Spectroscopy

February 1, 2011

Author(s)

Fan Zhang, Andrew J. Allen, Lyle E. Levine, Jan Ilavsky, Gabrielle G. Long, Anthony M. Santana

In this paper, we present the development of ultrasmall-angle X-ray scattering - X-ray photon correlation spectroscopy (USAXS-XPCS). This technique takes...

Surface Segregation of Nanoparticles Driven by Supercritical Carbon Dioxide

February 1, 2011

Author(s)

Mitsunori Asada, Peter Gin, Maya K. Endoch, Sushil K. Satija, Tadanori Koga

Cu-Based MOF/Graphene Composites: Synthesis and Surface Characterization

February 1, 2011

Author(s)

Camille Petit, Jacob Burress, Teresa J. Bandosz

A Dosimetric Uncertainty Analysis for Photon-Emitting Brachytherapy Sources: Report of the AAPM Task Group No. 138 and GEC-ESTRO

February 1, 2011

Author(s)

Larry A. DeWerd, Geoffrey S. Ibbott, Ali S. Meigooni, Michael G. Mitch, Mark J. Rivard, Kurt E. Stump, Bruce R. Thomadsen, Jack L. Venselaar

This report addresses uncertainties pertaining to brachytherapy source dosimetry. The ISO Guide to the Expression of Uncertainty in Measurement (GUM) and the...

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