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Journals

The 3-D Shape of Blasted and Crushed Rocks: From 20 ¿m to 38 mm

August 3, 2011

Author(s)

Edward J. Garboczi, Michael Taylor, Xuefeng Liu

Granodiorite material from a rock quarry in California was prepared by first quarrying large boulders, and then crushing down to smaller sizes. A range of...

Hierarchical Structure and Dynamics of an Ionic Liquid 1-Octyl-3-methylimidazolium Chloride

August 3, 2011

Author(s)

Osamu Yamamuro, Takeshi Yamada, Maiko Kofu, Masamichi Nakakoshi, Michihiro Nagao

We have performed the heat capacity, neutron diffraction, and neutron quasielas- tic scattering measurements of an ionic liquid 1-octyl-3-methylimidazolium...

Measuring silver nanoparticle dissolution in complex biological and environmental matrices using UV-Visible absorbance

August 2, 2011

Author(s)

Justin M. Zook, Stephen E. Long, Danielle Cleveland, Carly L. Geronimo, Robert I. MacCuspie

Distinguishing the toxic effects of nanoparticles (NPs) themselves from the well-studied toxic effects of their ions is a critical but challenging measurement...

Thermodynamic properties of adamantane revisited

August 2, 2011

Author(s)

Vladimir Diky, Ala B. Bazyleva, Andrey V. Blokhin, Gennady J. Kabo, Mikhail B. Charapennikau, Vladimir N. Emel'yanenko, Sergey P. Verevkin

The heat capacity and parameters of the solid-to-solid phase transition of adamantane were measured in the temperature range (80 to 370) K using adiabatic...

Light-Controlled Protein Dynamics Observed with Neutron Spin Echo Measurements

August 2, 2011

Author(s)

Shao-Chun Wang, Panteha Mirarefi, Antonio Faraone, Jr. Lee

A photo-responsive surfactant has been used as a means to control protein structure and dynamics with light illumination. This cationic azobenzene surfactant...

Molecular Spin Excitations in the Orbitally Frustrated Spinel GeCo_2Od4^

August 2, 2011

Author(s)

K. Tomiyasu, Michael K. Crawford, D.T. Adroja, P. Manuel, A. Tominaga, S. Hara, H. Sato, T. Watanabe, S. I. Ikeda, Jeffrey W. Lynn, K. Iwasa, K Yamada

We describe powder and single-crystal inelastic neutron scattering experiments on a spinel-type antiferromagnet GeCo 2O 4 with orbital degrees of freedom, which...

Emergency Radiobioassay Preparedness Exercises through the NIST Radiochemistry Intercomparison Program (NRIP)

August 1, 2011

Author(s)

Svetlana Nour, Jerome LaRosa, Kenneth G. Inn

The present challenge for the international radiobioassay community is to analyze contaminated samples rapidly while maintaining high quality results. NIST runs...

Key comparison BIPM.RI(I)-K7 of the air-kerma standards of the NIST, USA and the BIPM in mammography x-rays.

August 1, 2011

Author(s)

C M. O'Brien, C. Kessler, D T. Burns

A first key comparison has been made between the air-kerma standards of the NIST and the BIPM in mammography x ray beams. The results show the standards to be...

Cell Adhesion to Borate Glasses by Colloidal Probe Microscopy

August 1, 2011

Author(s)

Sheldon M. Wiederhorn, Carl G. Simon Jr., Young-Hun Chae

The adhesion of Osteoblast-like cells to silicate and borate glasses was measured using colloidal probe microscopy in a cell growth medium. The probe consisted...

Trapping and Release of Citrate-Capped Gold Nanoparticles

August 1, 2011

Author(s)

Darwin R. Reyes-Hernandez, Geraldine I. Mijares, Brian J. Nablo, Kimberly A. Briggman, Michael Gaitan

An electrical method to trap and release charged gold nanoparticles on and from the surface of alkanethiol self-assembled-monolayer (SAM) modified gold...

A Simple Series Resistance Extraction Methodology for Advanced CMOS Devices

August 1, 2011

Author(s)

Jason P. Campbell, Kin P. Cheung, John S. Suehle, A Oates

Series resistance has become a serious obstacle inhibiting the performance of advanced CMOS devices. However, series resistance quantification in these same...

GaN Nanowires Grown by Molecular Beam Epitaxy

August 1, 2011

Author(s)

Kristine A. Bertness, Norman A. Sanford, Albert Davydov

The unique properties of GaN nanowires grown by molecular beam epitaxy are reviewed. These properties include the absence of residual strain, exclusion of most...

Effect of Alternating Ar and SF6/C4F8 Gas Flow in Si Nano-Structure Plasma Etching

August 1, 2011

Author(s)

Lei Chen, Vincent K. Luciani, Houxun H. Miao

Si is very reactive to normal plasma etchants such as fluorine based chemicals and the reactions are inherently isotropic. To fabricate small and/or high aspect...

Plasma Etching Uniformity Control for Making Large and Thick Dual-Focus Zone Plates

August 1, 2011

Author(s)

Lei Chen, Quandou (. Wang, Ulf Griesmann

A typical zone plate structure is composed of concentric rings with a radially decreasing feature size such that the path of light through every second zone to...

On the Relationship Between Deformation-Induced Surface Roughness and Plastic Strain in AA5052 Is it Really Linear?

August 1, 2011

Author(s)

Mark R. Stoudt, Joseph B. Hubbard, Stefan D. Leigh

Three different heat treatments of aluminum alloy AA5052 were subjected to various levels of uniaxial plastic strain. The resulting surface topographies were...

Optimization of Cement and Fly Ash Particles to Produce Sustainable Concretes

August 1, 2011

Author(s)

Dale P. Bentz, Andrew Hansen, John Guynn

In the drive to produce more sustainable concretes, considerable emphasis has been placed on replacing cement in concrete mixtures with more sustainable...

First in a Series on the Evolution of Time Measurement: Celestial, Flow, and Mechanical Clocks

August 1, 2011

Author(s)

Michael A. Lombardi

A historical article about early clocks and time measurements (Part I of a IV-part series). It describes a number of different types of early clocks including...

A Special Functions Handbook for the Digital Age

August 1, 2011

Author(s)

Ronald F. Boisvert, Charles W. Clark, Daniel W. Lozier, Frank W. Olver

The NIST Digital Library of Mathematical Functions (DLMF) is a reference work providing information on the properties of the special functions of applied...

Development of a Seebeck Coefficient Standard Reference Material (SRM)

August 1, 2011

Author(s)

Nathan Lowhorn, Winnie Wong-Ng, John Lu, Joshua B. Martin, Martin L. Green, John E. Bonevich, Evan L. Thomas, Neil Dilley, Jeff Sharp

We have successfully developed a Seebeck coefficient Standard Reference Material (SRM), Bi2Te3, that is essential for interlaboratory data comparison and for...

STR Sequence Analysis for Characterizing Normal, Variant, and Null Alleles

August 1, 2011

Author(s)

Margaret C. Kline, Carolyn R. Steffen, John M. Butler, Amy Decker

DNA sequence variation is known to exist in and around the repeat region of short tandem repeat (STR) loci used in human identity testing. While the vast...

Concordance and Population Studies along with Stutter and Peak Height Ratio Analysis for the PowerPlex® ESX 17 and ESI 17 Systems

August 1, 2011

Author(s)

Carolyn R. Steffen, David L. Duewer, Margaret C. Kline, John M. Butler

The PowerPlex® ESX 17 and ESI 17 Systems for short tandem repeat (STR) amplification were developed by the Promega Corporation to meet the European Network of...

The effect of urban trees on the rental price of single-family homes in Portland, Oregon

August 1, 2011

Author(s)

Geoffrey Donovan, David Butry

Few studies have estimated the effect of environmental amenities on the rental price of houses. We address this gap in the literature by quantifying the effect...

Impact of Gd dopants on current polarization and the resulting effect on spin-transfer velocity in Permalloy wires

August 1, 2011

Author(s)

Rebecca L. Thomas, Meng Zhu, Cindi L. Dennis, Veena Misra, Robert McMichael

A spin-wave Doppler technique is used to measure the spin-transfer velocity and the current polarization in current-carrying (Ni80Fe20)1-xGdx alloy wires...

Effect of sample conditioning on the water absorption of concrete

August 1, 2011

Author(s)

Javier Castro, Dale P. Bentz, Jason Weiss

ASTM C1585 is commonly used to determine the absorption and rate of absorption of water in unsaturated hydraulic cement concretes. ASTM C1585 preconditions the...

The sixth industrial fluid properties simulation challenge

July 28, 2011

Author(s)

F Case, Anne M. Chaka, Jonathan D. Moore, Raymond D. Mountain, Richard B. Ross, Vincent K. Shen, Eric A. Stahlberg

The sixth industrial fluid properties simulation challenge was held in 2010. The contestants were challenged to predict mutual solubility in liquid-liquid...

CsTe₂O_6-x: Novel Mixed-Valence Tellurium Oxides with Framework-Deficient Pyrochlore-Related Structure

July 27, 2011

Author(s)

Theeranun Siritanon, Jun Li, Judith K. Stalick, Robin T. Macaluso, Arthur W. Sleight, M. A. Subramanian

Structures of CsTe 2O 6-x phases were investigated by single crystal X-ray diffraction and neutron powder diffraction. Stoichiometric CsTe 2O 6 is a mixed...

Single-Photon Sources and Detectors

July 27, 2011

Author(s)

M D. Eisaman, Jingyun Fan, Alan L. Migdall, Sergey Polyakov

We review the current status of single-photon-source and single-photon-detector technologies operating at wavelengths from the ultraviolet to the infrared. We...

Unification of universal and non-universal topological quantum computation

July 26, 2011

Author(s)

Haitan Xu, Jacob Taylor

Approaches for implementing primitives for quantum computation using Read-Reyazi anyons remain computational difficult to find. We demonstrate how recently...

Supplementary comparison CCR(IK)-S2 of standards for absorbed dose to water Co-60 gamma radiation at radiation processing dose levels

July 25, 2011

Author(s)

Marc F. Desrosiers, D T. Burns, P J. Allisy-Roberts, P H. Sharpe, M. Pimpinella, V. Lourenco, Y. L Zhang, A Miller, V Generalova, V. Sochor

Eight national standards or absorbed dose to water in Co-60 gamma radiation at the dose levels used in radiation processing have been compared over the range...

A circular dielectric grating for vertical extraction of single quantum dot emission

July 25, 2011

Author(s)

Marcelo I. Davanco, Matthew T. Rakher, Dieter Schuh, Antonio Badolato, Kartik A. Srinivasan

We demonstrate a suspended circular grating composed of partially etched annular trenches in a thin GaAs membrane, designed for e±cient and moderately broadband...

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