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Hydrogen Release and Combustion Measurements in a Full Scale Garage

January 1, 2010

Author(s)

Matthew Blais, Alexandra Joyce

… characterized by visual observation, temperature, flame ion front speed measurements, radiative energy measurements, …

Observed Correlation of Sn Oxide film to Sn Whisker Growth in Sn-Cu electrodeposit for pb-free Solders

September 11, 2005

Author(s)

Kil-Won Moon, C E. Johnson, Maureen E. Williams, O Kongstein, Gery R. Stafford, C A. Handwerker, William J. Boettinger

… an ultrahigh vacuum chamber with Auger analysis. After Ar+ ion beam cleaning to remove the oxide film, the sample was …

Dynamics of Photoinduced Collisions of Cold Atoms Probed with Picosecond Laser Pulses

September 1, 2001

Author(s)

F K. Fatemi, Kevin Jones, H Wang, I Walmsley, Paul D. Lett

… doubly-excited states. The time-dependence of the ion signal shows a dramatic flux-enhancement effect due to …

Structure and Property Characterization of Porous Low-k Dialectric Constant Thin Films Using X-ray Reflectivity and Small Angle Neutron Scattering

April 1, 2001

Author(s)

Eric K. Lin, Wen-Li Wu, C Jin, J T. Wetzel

… A novel methodology using a combination of high energy ion scattering x-ray reflectivity, and small angle neutron …

Applications of Electron-Interaction Reference Data to the Semiconductor Industry

December 1, 1998

Author(s)

Loucas G. Christophorou, James K. Olthoff

Many advanced plasma diagnostic techniques and plasma models require fundamental physical data in order to make accurate measurements or predictions. Fundamental electron-interaction data are among the most critical since electron collisions are the

Alkali Metals on III-V (110) Semiconductor Surfaces: Overlayer Properties and Manipulation Via STM

January 1, 1993

Author(s)

L Whitman, Joseph A. Stroscio, Robert A. Dragoset, Robert Celotta

… Field ion microscopists demonstrated more than twenty years ago …

Imaging of induced surface charge distribution effects in glass vapor cells used for Rydberg atom-based sensors

June 1, 2025

Author(s)

Charles Patrick, Noah Schlossberger, Daniel Hammerland, Nikunjkumar Prajapati, Tate McDonald, Samuel Berweger, Rajavardhan Talashila, Alexandra Artusio-Glimpse, Christopher Holloway

We demonstrate the imaging of localized surface electric (E) field effects on the atomic spectrum in a vapor cell used in Rydberg atom-based sensors. These surface E-fields can result from an induced electric charge distribution on the surface. Induced

Sensitivity Analyses of the Thermal-hydraulics Safety Margins in the Proposed NIST Neutron Source Design

May 26, 2023

Author(s)

Abdullah Weiss, Anil Gurgen, Idan Baroukh, Joy Shen

The NIST Neutron Source, or NNS, is a proposed new research reactor at the NIST Center for Neutron Research in the United States of America. The NNS will serve as a state-of-the-art source for neutron scattering and irradiation experiments for the domestic

Orientation and Magnetic Properties of FePt and CoPt Films Grown on MgO(110) Single-Crystal Substrate by Electron-Beam Coevaporation

October 12, 2021

Author(s)

M-H Yu, Hiroyuki Ohguchi, Antonio Zambano, Ichiro Takeuchi, J P. Liu, Daniel Josell, Leonid A. Bendersky

We have studied the orientation and magnetic properties of FePt and CoPt films deposited by electron-beam co-evaporation on MgO(110) single-crystal substrates at different substrate temperatures between 500 and 700 degrees C. We observed that the long

Simulation of a Single Asperity Impacts at Head-Disk Interface

October 12, 2021

Author(s)

Tze J. Chuang, Stephen M. Hsu

During the track accessing mode of a hard disk drive, the flying height of the slider over the disk surface becomes smaller and smaller as the demand in data storage a real density increases. As a result, the propensity of glide avalanche is bound to

Sensitivity Analysis Affecting the Calibration of Heat-Flow-Meter Apparatus

July 1, 2019

Author(s)

Robert R. Zarr, Sergio A. Carvajal, James J. Filliben

Results and analysis of a sensitivity study of four procedural variables on the calibration response of two commercial heat-flow-meter apparatus in compliance with ASTM Test Method C 518 are presented. The apparatus ranged in plate size from 305 mm by 305

Mechanisms of spontaneous chain formation and subsequent microstructural evolution in shear- driven strongly confined drop monolayers

May 18, 2019

Author(s)

Sagnik Singha, Abhilash R. Malipeddi, Mauricio Zurita-Gotor, Kausik Sarkar, Kevin Shen, Michael Loewenberg, Kalman D. Migler, Jerzy Blawzdziewicz

It was experimentally demonstrated by Migler and his collaborators [Phys. Rev. Lett. 2001, 86, 1023; Langmuir 2003, 19, 8667] that a strongly confined drop monolayer sheared between two parallel plates can spontaneously develop a flow-oriented drop-chain

DEFORMATION LIMITS AND ROTATIONAL CAPACITIES FOR CONNECTIONS UNDER COLUMN LOSS

October 12, 2016

Author(s)

Jonathan Weigand, Joseph Main

For structural steel framing systems subjected to column loss, the ultimate gravity load carrying capacity of the system is often controlled by the rotation and deformation capacities of the connections within the affected bays. Within current design

Electrochemical potential gradient as a quantitative in vitro test platform for cellular oxidative stress

July 11, 2016

Author(s)

Carson Bryant, Donald H. Atha, Vytas Reipa

Oxidative stress in a biological system is often defined as a redox imbalance within cells or groups of cells within an organism. Reductive-oxidative (redox) imbalances in cellular systems have been implicated in several diseases such as cancer. To better

Temperature-Dependent Material Modeling for Structural Steels: Formulation and Application

April 15, 2016

Author(s)

Mina S. Seif, William E. Luecke, Lisa Y. Choe, Joseph A. Main, Joseph D. McColskey, Chao Zhang, Jonathan M. Weigand, John L. Gross, Fahim Sadek

This report presents the formulation and application of a newly developed temperature-dependent material model for structural steels. First it presents a model for computing the stress-strain behavior of structural steel for conditions appropriate to fire

Ligand-Induced Fate of Embryonic Species in the Shape-Controlled Synthesis of Rhodium Nanoparticles

January 28, 2015

Author(s)

Adam J. Biacchi, Raymond E. Schaak

The shapes of noble metal nanoparticles directly impact their properties and applications, including in catalysis and plasmonics, and it is therefore important to understand how multiple distinct morphologies can be controllably synthesized. Solution

Measurement of the O2O3O4 and O3O4O5 Super Coster-Kronig Rates in Tungsten via Asymmetric Diffraction Spectrometry

March 7, 2014

Author(s)

Lawrence T. Hudson, John F. Seely, Jack L. Glover, Yuri Ralchenko, Nino R. Pereira, Uri Feldman

The tungsten Lγ transitions between 11 keV and 12 keV and Kα transitions from 57 keV to 60 keV were produced by a laboratory electron-bombarded x-ray source and simultaneously recorded with high-resolution by using multiple diffraction planes of the same

Air Blast Loading of Cellular Media

July 1, 2007

Author(s)

George A. Gazonas, Joseph Main

Motivated by recent efforts to mitigate blast loading using energy-absorbing materials, this paper investigates the mechanics of uniaxial crushing of cellular sandwich plates under air blast loading using analytical and computational modeling. This model

Whisker Formation in Pb-Free Surface Finishes

September 11, 2006

Author(s)

Gery R. Stafford, Maureen E. Williams, C E. Johnson, Kil-Won Moon, Ugo Bertocci, William J. Boettinger

High purity bright Sn, Sn-Cu and Sn-Pb layers measuring 3,7 and 16 microns thick were electrodeposited onto phosphor bronze cantilever beams in a rotating disk apparatus. Beam deflection measurements within 15 min. of plating proved that all

Breakup of a Fluid Thread in a Confined Geometry: Droplet-Plug Transition Perturbation Sensitivity and Kinetic Stabilization With Confinement

July 5, 2006

Author(s)

John G. Hagedorn, N S. Martys, J F. Douglas

We investigate the influence of geometrical confinement on the breakup of long fluid threads in the absence of imposed flow using a Lattice Boltzmann model. Our simulations primarily focus on the case of threads centered coaxially in a tube filled with

Wavelet Transform Signal Processing to Distinguish Different Acoustic Emisson Sources

January 1, 2003

Author(s)

K S. Downs, Marvin A. Hamstad, E P. Baars

A database of wideband acoustic emission (AE) modeled signals were used to continue to examine the use of wavelet transform (WT) results to accomplish identification of AE sources. The AE signals in the database were created by use of a validated three

The Relationship Between Microstructure and Mechanical Properties of Late 19th/Early 20th Century Wrought Iron Using the Generalized Method of Cells Model

March 1, 2002

Author(s)

J J. Hooper, L Graham, Timothy J. Foecke, Timothy P. Weihs

The discovery of the RMS Titanic has led to a number of scientific studies, one of which addresses the role that the structural materials played in the sinking of the ship. Chemical, microstructural, and mechanical analysis of the hull steel suggests that

Research Trends in Lead-Free Soldering in the U.S.: NCMS Lead-Solder Project

October 1, 1999

Author(s)

I Artaki, D Noctor, C Desantis, W Desaulnier, L Felton, M Palmer, J Felty, J Greaves, C A. Handwerker, J D. Mather, S Schroeder, D Napp, TG Y. Pan, J Rosser, P Vianco, G Whitten, Y Zhu

… and studies of the root causes of fillet lifting in plated through hole joints. The following text is an abridged …

Electron-Impact Total Ionization Cross Sections of CF 4 , C 2 F 6 , and C 3 F 8

February 1, 1999

Author(s)

H Nishimura, W M. Huo, M A. Ali, Yong Sik Kim

Both theoretical and experimental electron-impact total ionization cross sections of CF 4, C 2F 6, and C 3F 8 are presented. The experimental cross sections have been measured as a function of incident electron energy T from threshold to 3 keV. A parallel

Room temperature Laser Power Standard Using a Microfabricated, Electrical Substitution Bolometer

February 18, 2021

Author(s)

Michelle Stephens, Christopher Yung, Nathan Tomlin, Anna Vaskuri, Ivan Ryger, Matthew Spidell, Malcolm G. White, Thomas Jenkins, Jennifer Landry, Tesfatsion Sereke, John Lehman

… primary standard through a transfer standard silicon trap detector and by comparing it to the legacy 'C-series' …

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