Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Journals

The Filler Effect: The Influence of Filler Content and Surface Area on Cementitious Reaction Rates

June 15, 2013

Author(s)

Tandre Oey, Aditya Kumar, Jeffrey W. Bullard, Narayanan Neithalath, Gaurav Sant

Finely ground mineral powders are known to accelerate cement hydration rates. This "filler effect" has been attributed to the effects of dilution (w/c increase)

ASME Journal of Computing and Information Science in Engineering (JCISE)

June 14, 2013

Author(s)

Vijay Srinivasan

For over a decade this journal has supported and advanced the research and applications at the intersection of information science and mechanical engineering

Optimized superconducting detectors using the proximity effect in Ti/TiN multilayers

June 14, 2013

Author(s)

David P. Pappas, Michael R. Vissers, Jiansong Gao, Martin O. Sandberg, David S. Wisbey, Kent D. Irwin

We apply the superconducting proximity effect in TiN/Ti multi-layers films to tune the critical temperature, $T_C$ (to within 10 mK) with high uniformity (less

Dephasing of Si singlet-triplet qubits due to charge and spin defects

June 14, 2013

Author(s)

Dimitrie Culcer, Neil M. Zimmerman

We study the effect of charge and spin noise on singlet-triplet qubits in Si quantum dots. We set up a theoretical framework aimed at enabling experiment to

The Spin Hall Effect in a Quantum Gas

June 13, 2013

Author(s)

Matthew C. Beeler, Ross A. Williams, Karina K. Jimenez Garcia, Lindsay J. LeBlanc, Abigail R. Perry, Ian B. Spielman

Electronic properties like current ﬂow are usually unaffected by the electrons spin angular momentum, an internal degree of freedom present in quantum

The continuum absorption in H2O+N2 mixture in the 3 - 5 ¿m spectral region at temperatures from 326 to 363 K

June 13, 2013

Author(s)

Yuri I. Baranov

The absorption spectra of H2O+N2 mixtures, as well, as the spectra of pure gases, have been measured using a Fourier-transform infrared spectrometer at a

Investigation of 304SS and Ti-6AI-4V during electrically-assisted forming at high deformation rates

June 11, 2013

Author(s)

Steven P. Mates, Brad Kinsey, Graham Cullen, Adam Jordan

Past research has investigated an electroplastic effect for metals, i.e., decreased flow stress and increased elongation, caused by the an applied electrical

Mechanochromic photonic gels

June 10, 2013

Author(s)

Edwin P. Chan, A M. Urbas, Joseph J. Walish, Edwin L. Thomas

Polymer gels are remarkable materials with physical structures that can adapt significantly and quite rapidly with changes in the local environmental changes

Formation of Disk- and Stacked Disk-Like Self-Assembled Morphologies from Cholesterol Functionalized Aliphatic Polycarbonate Containing Amphiphilic Diblock Copolymers

June 10, 2013

Author(s)

Vivek M. Prabhu, Shrinivas Venkataraman, Ashlynn Lee, Yi Yan Yang, James Hedrick, Hareem Maune

In this study, a cholesterol functionalized aliphatic cyclic carbonate monomer, 2-(5-methyl-2-oxo-1,3-dioxane-5-carboxyloyloxy)ethyl carbamate (MTC-Chol) was

High-Resolution Photocurrent Microscopy Using Near-Field Cathodoluminescence of Quantum Dots

June 10, 2013

Author(s)

Heayoung Yoon, Youngmin Lee, Christopher C. Bohn, Seung H. Ko, Anthony G. Gianfrancesco, Jonathan S. Steckel, Seth Coe-Sullivan, Albert A. Talin, Nikolai B. Zhitenev

We report a fast, versatile photocurrent imaging technique to visualize the local photo response of solar energy devices and optoelectronics using near-field

The Effect of Turbulence on a Multi-Hole Pitot Calibration

June 10, 2013

Author(s)

Christopher J. Crowley, Iosif I. Shinder, Michael R. Moldover

Abstract- Accurate calibrations of multi-hole Pitot tubes require thousands of measurements spanning ranges of the fluids velocity, and the pitch and yaw

Nanosecond-scale timing jitter in transition edge sensors at telecom and visible wavelengths

June 10, 2013

Author(s)

Antia A. Lamas-Linares, Brice R. Calkins, Nathan A. Tomlin, Thomas Gerrits, Adriana Lita, Joern Beyer, Richard Mirin, Sae Woo Nam

Transition edge sensors (TES) have the highest reported efficiencies (> 98%) for single photon detection in the visible and near infrared. Experiments in

The Impact of Characteristic Impedance on Waveform Calibrations

June 7, 2013

Author(s)

Dylan F. Williams, Jeffrey A. Jargon, Paul D. Hale

We examine the impact of the characteristic impedance on mismatch corrections for temporal waveform calibrations based on high-speed electro-optic sampling

Laser-Machined Ultra-High-Q Microrod Resonators for Nonlinear Optics

June 7, 2013

Author(s)

Pascal P. Del'Haye, Scott B. Papp, Scott A. Diddams

Optical whispering-gallery microresonators are useful tools in microphotonics, and non-linear optics at very low threshold powers. Here, we present details

Anchor Molecules Affect Structure and Properties of Tethered Bilayer Lipid Membranes. Unsaturation in the Alkyl Chains.

June 7, 2013

Author(s)

David J. Vanderah, Rima Budvytyte, Gintaras Valincius, Gediminas Niaura, Vladislava Voiciuk, Mindaugas Mickevicius, Haw-Zan Goh, Hilary Stauffer, Frank Heinrich, Siddharth Shenoy

The self-assembled monolayers (SAMs) of the new lipidic anchor molecule, Z 20-(Z-octadec-9-enyloxy)-3,6,9,12,15,18,22-heptaoxatetracont-31-ene-1-thiol (HC18)

Critical dimension metrology by through-focus scanning optical microscopy beyond the 22 nm node

June 7, 2013

Author(s)

Ravikiran Attota, Benjamin D. Bunday, Victor Vertanian

We present results using simulations and experiments to demonstrate metrological applications of the through-focus scanning optical microscopy (TSOM) down to

Feasibility of Real-Time Graphical Simulation for Active Monitoring of Visibility-Constrained Construction Processes

June 7, 2013

Author(s)

Sanat Talmaki, Vineet Kamat, Kamel Saidi

The lack of clear visibility and spatial awareness frequently results in construction accidents such as workers being struck by heavy equipment; and collisions

Extreme Bottom-up Filling of Through Silicon Vias and Damascene Trenches with Gold in a Sulfite Electrolyte

June 6, 2013

Author(s)

Daniel Josell, Thomas P. Moffat

Superconformal Au deposition is demonstrated in a Na_{3}Au(SO_{3})_{2} based electrolyte that exhibits critical behavior with addition of the deposition-rate

CM-BOF: Visual Similarity based 3D Shape Retrieval Using Clock Matching and Bag-of-Features

June 6, 2013

Author(s)

Afzal A. Godil, Zhouhui Lian

Content-based 3D object retrieval has be- come an active topic in many research communities. In this paper, we propose a novel visual similarity based

Fourier, Gegenbauer and Jacobi expansions for a power-law fundamental solution of the polyharmonic equation and polyspherical addition theorems

June 5, 2013

Author(s)

Howard S. Cohl

We develop complex Jacobi, Gegenbauer and Chebyshev polynomial expansions for the kernels associated with power-law fundamental solutions of the polyharmonic

Transition Energies of the D-lines in Na-like Ions

June 5, 2013

Author(s)

John D. Gillaspy, Dmitry D. Osin, Yuri Ralchenko, Joseph Reader, S A. Blundell

The NIST electron beam ion trap (EBIT) was used to measure the D1 (3s-3p1/2) and D2 (3s-3p3/2) transitions in Na-like ions of xenon, barium, samarium

Non-equilibrium Fractional Quantum Hall state of light

June 3, 2013

Author(s)

Mohammad Hafezi, Jacob M. Taylor

We investigate the out-of-equilibrium dynamics in strongly interacting photonic systems. Specifically, we develop a method to investigate such system when they

Evaluation of Vitamin D Standardization Program protocols for standardizing serum 25-hydroxyvitamin D data: a case study of the program's potential for national nutrition and health surveys

June 3, 2013

Author(s)

Karen W. Phinney, Kevin Cashman, Mairead Kiely, Michael Kinsella, Ramon Durazo-Arvizu, Lu Tian, Yue Zhang, Alice Lucey, Albert Flynn, Michael Gibney, Mary F. Picciano, Christopher T. Sempos

Lattice damage in superconducting microcalorimeter detectors

June 3, 2013

Author(s)

Robert D. Horansky, Joel N. Ullom, Michael W. Rabin

There is currently significant interest in using superconducting detectors for measurement of ion kinetic energies. Unprecedented resolution is possible with an

In-plane Rotation and Scale Invariant Clustering and Dictionary Learning

June 3, 2013

Author(s)

P J. Phillips, Challa Sastry, Yi-Chen Chen, Vishal M. Patel, Rama Chellappa

n this paper, we present an approach that simulta- neously clusters images and learns dictionaries from the clusters. The method learns dictionaries in the

Measurement and Prediction of Vapor-Space Condensation of Refrigerants on Trapezoidal-Finned and Turbo-C Geometries

June 3, 2013

Author(s)

Mark A. Kedzierski, J S. Brown, Matt Carr

This paper reports vapor-space condensation heat transfer measurements for R123, R134a, and R245fa on two passively enhanced vertical surfaces and on a vertical

Classical over-the-barrier model for neutralization of highly charged ions above thin dielectric films

June 3, 2013

Author(s)

Joshua M. Pomeroy, Russell E. Lake, C E. Sosolik

We apply the classical over-the-barrier model (COB) to charge transfer between highly charged ions (HCIs)and targets consisting of thin dielectric films on

Nanofluids, Heat-Transfer Equipment and Plain-Vanilla

June 3, 2013

Author(s)

Mark A. Kedzierski

Nanoparticle materials can be very inexpensive and the technology for producing nanofluids is mature. The production of inks, paints, coatings, and suntan

Graphene Epitaxial Growth on SiC(0001) for Resistance Standards

June 3, 2013

Author(s)

Mariano A. Real, Eric Lass, Fan-Hung H. Liu, Tian T. Shen, George R. Jones Jr., Johannes A. Soons, David B. Newell, Albert Davydov, Randolph Elmquist

A well-controlled technique for high-temperature epitaxial growth on 6H-SiC(0001) substrates is shown to allow development of monolayer graphene that exhibits

Assessment of the glassy phase reactivity in fly ashes used for geopolymer cements

June 1, 2013

Author(s)

Paul E. Stutzman, Katherine Aughenbaugh, Maria Juenger

Geopolymer cements have not found widespread use as a portland cement replacement, in part due to the difficulty in proportioning mixtures in a reliable manner