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Journals

Colored Noise and Regularization Parameter Selection for Waveform Metrology

July 8, 2014

Author(s)

Andrew M. Dienstfrey, Paul D. Hale

We study six regularization parameter selection algorithms applied to deconvolution problems relevant for characterization of high-speed communication...

Influence of phantom materials on the energy dependence of LiF:Mg,Ti exposed to low-energy x-rays

July 8, 2014

Author(s)

Ronaldo Minniti, G. Massillon, Christopher G. Soares

Thermoluminescent (TL) dosimeters, particularly LiF:Mg,Ti (commercially known as TLD-100), are widely used to estimate the absorbed dose received by patients...

Viscosity Measurements of DNA Solutions with and without Condensing Agents

July 7, 2014

Author(s)

Arno D. Laesecke, Jessica L. Burger

Aqueous DNA solutions at three concentrations were studied as model sputum by viscosity measurements at ambient pressure. Initial measurements at 25 °C, 37.78...

Solid-State ²⁹Si NMR and Neutron-Diffraction Studies of Sr_0.07K_0.3SiO_2.85 Oxide Ion Conductors

July 7, 2014

Author(s)

Jungu Xu, Xiaoming Wang, Hui Fu, Craig Brown, Xiping Jing, Fuhui Liao, Fengqi Lu, Xiaohui Li, Xiaojun Kuang, Mingmei Wu

The new oxide ion conductors Sr 1-xK xSiO 3-05x, recently reported as promising candidate electrolytes for solid oxide fuel cells, were characterized using...

The Suppression of Curie Temperature by Sr Doping in Diluted Ferromagnetic Semiconductor (La_1-xSr_x)(Zn_1-yMnYdy^)AsO

July 7, 2014

Author(s)

Cui Ding, Xin Gong, Huiyuan Man, Guoxiang Zhi, Shengli Guo, Yang Zhao, Hangdong Wang, Bin Chen, F.L. Ning

(La 1-xSr x)(Zn 1-yMndy^)AsO is a two dimensional diluted ferromagnetic semiconductor that has advantage of decoupled charge and spin doping. The substitution...

Low Temperature Plasma for Bevel Crater Depth Profiling of Crosslinking Organic Multilayers: Comparison with C60 and Argon Gas Cluster Sources

July 6, 2014

Author(s)

Shinichiro Muramoto, Derk Rading, Brian G. Bush, John G. Gillen, David G. Castner

A model delta layer system made of thin films of an organometallic chelate and an aromatic molecule (aluminum hydroxyquinolinate and bathocuproine), both that...

Extreme ultraviolet spectra and analysis of ¿n=0 transitions in highly charged barium

July 4, 2014

Author(s)

Joseph Reader, John D. Gillaspy, Dmitry D. Osin, Yuri Ralchenko

Extreme ultraviolet spectra of highly charged barium atoms were produced with an electron beam ion trap (EBIT) and recorded with a flat-field grazing-incidence...

On the limits of spin-exchange optical pumping of 3He

July 2, 2014

Author(s)

Thomas R. Gentile, T G. Walker, E Babcock, Qiang NMN Ye, Wangchun Chen

Using diode bar lasers spectrally narrowed with chirped volume holographic gratings (VHGs), we have obtained an improvement in the 3He polarization achievable...

The red color in 19th century Thai glass studied by X-ray and optical spectroscopy

July 2, 2014

Author(s)

Bruce D. Ravel, Wantana Klysubun, G. Lawrence Carr, Christoph Hauzenberger

The Temple of the Emerald Buddha in Bangkok, Thailand is noted for its glass mosaic decorations on exterior walls and statuary. The original mosaic artwork...

A Framework for a Research Inventory of Sustainability Assessment in Manufacturing

July 2, 2014

Author(s)

Juyeon Lee, Yung-Tsun T. Lee

Numerous research papers have focused on the development of guidelines, indicators, metrics, methods, tools, and systems for sustainability performance...

Imaging the p-n junction in a gallium nitride nanowire with a scanning microwave microscope

July 2, 2014

Author(s)

Atif A. Imtiaz, Thomas M. Wallis, Joel C. Weber, Kevin J. Coakley, Matthew D. Brubaker, Paul T. Blanchard, Kristine A. Bertness, Norman A. Sanford

We used a broadband, atomic-force-microscope-based, scanning microwave microscope (AFM-SMM) to probe the axial dependence of the depletion in a GaN nanowire (NW...

Interpreting gas-saturation vapor-pressure measurements using virial coefficients derived from molecular models

July 2, 2014

Author(s)

Shu Yang, Andrew J. Schultz, David A. Kofke, Allan H. Harvey

Gas-saturation measurements of apparent vapor pressures of heavy organic molecules are found to depend on the carrier gas when interpreted with an ideal-gas...

Microresonator frequency comb optical clock

July 1, 2014

Author(s)

Scott B. Papp, Katja M. Beha, Pascal P. Del'Haye, Franklyn J. Quinlan, Hansuek Lee, Kerry J. Vahala, Scott A. Diddams

Optical frequency combs enable measurement precision at the 20th digit, and measurement accuracy entirely commensurate with their reference oscillator. A new...

Hot carriers in epitaxial graphene sheets with and without hydrogen intercalation: role of substrate coupling

July 1, 2014

Author(s)

Randolph E. Elmquist, Chiashain Chuang, Yanfei Yang, Lung-I Huang, Chi-Te Liang

The development of graphene electronic devices produced by industry will rely on efficient control of heat transfer from the graphene sheet to its environment...

EXPERIMENTAL STUDY OF RC ASSEMBLIES UNDER A COLUMN REMOVAL SCENARIO

July 1, 2014

Author(s)

Hai S. Lew, Yihai Bao, Santiago Pujol, Mete Sozen

This paper presents an experimental study of two full-scale reinforced concrete (R/C) beam-column assemblies under a column removal scenario. The assemblies...

From atoms to steps: the microscopic origins of crystal growth.

July 1, 2014

Author(s)

Paul N. Patrone, T L. Einstein, Dionisios Margetis

Accurate Fast Capacitance Measurements for Reliable Device Characterization

July 1, 2014

Author(s)

Pragya R. Shrestha, Kin P. Cheung, Jason P. Campbell, Jason T. Ryan, Helmut Baumgart

As device dimensions continue to scale, transient phenomena are becoming increasingly more important to understand for both performance and reliability...

Unveiling the Origin of a Nonequilibrium Dynamic Process Detected by X-Ray Photon Correlation Spectroscopy via a Finite Element Analysis Approach

July 1, 2014

Author(s)

Li Ma, Fan Zhang, Andrew J. Allen, Lyle E. Levine

It is a scientific and engineering challenge to characterize materials under nonequilibrium conditions. In recent years, X-ray photon correlation spectroscopy...

Significant disparity in base and sugar damage in DNA by neutron and electron irradiation

July 1, 2014

Author(s)

Pawel Jaruga, Jeffrey S. Nico, Lisa R. Karam, Olga Timofeeva, William Blakely, M Miral Dizdar, D Pang

In this study a comparison of the effects of high-LET neutrons with low-LET electrons on irradiation of aqueous DNA solutions was investigated to characterize...

Simultaneous Imaging of the Ferromagnetic and Ferroelectric Structure in Multiferroic Heterostructures

July 1, 2014

Author(s)

John Unguris, Samuel R. Bowden, Daniel T. Pierce, M. Trassin, R. Ramesh, S.- W. Cheong, Sean Fackler, Ichiro Takeuchi

Combining ferromagnetic and ferroelectric materials has produced exciting new opportunities to design and produce structures with new functionalities.1,2,3 In...

Uncertainty in Bogue-Calculated Phase Composition of Hydraulic Cements

July 1, 2014

Author(s)

Paul E. Stutzman

The Bogue calculations of cement composition are used for manufacturing process control and cement classification. While it is commonly understood that the...

An Experimental and Computational Study of Approach Air Distribution for Slanted and A-Shaped Finned-Tube Heat Exchangers

July 1, 2014

Author(s)

David A. Yashar, Piotr A. Domanski, Hong Hyun Cho

One of the most influential factors of the performance of a finned tube heat exchanger is the distribution of the air passing through it; therefore it must be...

Non-destructive Measurement of the Residual Stresses in Copper Through-Silicon Vias using Synchrotron Based Micro-beam X-ray Diffraction

July 1, 2014

Author(s)

Chukwudi A. Okoro, Lyle E. Levine, Yaw S. Obeng, Klaus Hummler, Ruqing Xu

In this study, we report a new method for achieving depth resolved determination of the full stress tensor in buried Cu through-silicon vias (TSVs), using...

Scanning Ion Microscopy with Low Energy Lithium Ions

July 1, 2014

Author(s)

Kevin A. Twedt, Lei Chen, Jabez J. McClelland

Using an ion source based on photoionization of laser-cooled lithium atoms, we have developed a scanning ion microscope with probe sizes of a few tens of...

Influence of morphology on current-voltage behavior of GaN nanowires

July 1, 2014

Author(s)

Paul T. Blanchard, Kristine A. Bertness, Matthew D. Brubaker, Todd E. Harvey, Aric W. Sanders, Norman A. Sanford

We demonstrate the effect that the different morphologies of MBE-grown GaN nanowires (NWs) can have upon current-voltage (I-V) behavior. Two main aspects of NW...

State of the Art Raman Techniques for Biological Applications

July 1, 2014

Author(s)

Angela R. Hight Walker, Alasdair Rae, Rainer Stosch, Petr Klapetek, Debdulal Roy

Raman spectroscopy is a powerful tool for the elucidation of qualitative and quantitative information from biological systems and has huge potential in areas...

A Porous Metal-Organic Framework with an Elongated Anthracene Derivative Exhibiting a High Working Capacity for the Storage of Methane

July 1, 2014

Author(s)

Hui-Min Wen, Bin Li, Hailong Wang, Taner N. Yildirim, Wei Zhou, Banglin Chen

We have realized a new porous metal-organic framework UTSA-80a with a elongated anthracene derivative as a linker, exhibiting higher pore volume of 1.03 cm 3/g...

From Prints to Bits: Digitizing NIST's Archival Photograph Collections

July 1, 2014

Author(s)

Katelynd E. Bucher, Andrea M. Medina-Smith

Optimal Energy Measurement in Nonlinear Systems - An Application of Differential Geometry

July 1, 2014

Author(s)

Dale J. Fixsen, Harvey Moseley, Thomas Gerrits, Adriana Lita, Sae Woo Nam

Design of TES microcalorimeters requires a tradeoff between resolution and dynamic range. Often, experimenters will require linearity for the highest energy...

Toxicity of carboxylated carbon nanotubes in endothelial cells is attenuated by stimulation of the autophagic flux associated with the release of nanomaterial in autophagic vesicles

July 1, 2014

Author(s)

Martina Orecna, Silvia De Paoli Lacerda, Olga Janouskova, Tseday Tegegn, Marcela Filapova, John E. Bonevich, Jan Simak

Here, we present a new method for the pharmacological modulation of the vascular toxicity of carbon nanotubes. We report that carboxylated multiwalled carbon...

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