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Search Publications

NIST Authors in Bold

Displaying 16176 - 16200 of 73892

Saturation in Solar Cells from Ultra-Fast Pulsed-Laser Illumination

June 4, 2016
Author(s)
Tasshi Dennis
We investigate the potential saturation of a silicon solar cell in response to excitation from continuous-wave and ultra-fast pulsed lasers of equivalent average optical power. Because ultra-fast pulsed sources such as the super-continuum laser have very

Virtual Factory Based Data Analytics

June 4, 2016
Author(s)
Sanjay Jain, Guodong Shao, Seungjun Shin
The concept of a virtual factory representation and its use to support data analytics in multiple ways in manufacturing environment are proposed. The proposed virtual factory when implemented can facilitate improvements in manufacturing operations through

Extending Network Security into Virtualized Infrastructure

June 3, 2016
Author(s)
Ramaswamy Chandramouli, Larry Feldman, Gregory A. Witte
This bulletin summarizes the information presented in NIST Special Publication (SP) 800-125B, "Secure Virtual Network Configuration for Virtual Machine (VM) Protection." That publication provides an analysis of various virtual network configuration options

Orbital-Exchange and Fractional Quantum Number Excitations in an f-electron Metal Yb 2 Pt 2 Pb

June 3, 2016
Author(s)
L. S. Wu, W. J. Gannon, I. A. Zaliznyak, A. M. Tsvelik, M. Brockmann, J.-S. Caux, M. S. Kim, Yiming Qiu, John R. Copley, G. Ehlers, A. Podlesnyak, M. C. Aronson
Exotic quantum states and fractionalized magnetic excitations, such as spinons in one-dimensional chains, are generally viewed as belonging to the domain of 3d transition metal systems with spin 1/2. Our neutron scattering experiments on the 4f-electron

Quantum mechanical effects in plasmonic structures with subnanometre gaps

June 3, 2016
Author(s)
Wenqi Zhu, Ruben Esteban, Andrei G. Borisov, Jeremy J. Baumberg, Peter Nordlander, Henri J. Lezec, Javier Aizpurua, Kenneth B. Crozier
Metal nanostructures with nanogap features have proven highly effective as building blocks for plasmonic systems as they can provide a wide tuning range of operating frequencies and large near-field enhancements. It has recently become apparent that

Single-frequency 571 nm VECSEL for photoionization of magnesium

June 3, 2016
Author(s)
Shaun C. Burd, Tomi Leinonen, Jussi-Pekka Penttinen, David T. Allcock, Daniel H. Slichter, Raghavendra Srinivas, Andrew C. Wilson, Micrea Guina, Dietrich G. Leibfried
We report the development of an intracavity-frequency-doubled VECSEL emitting at 571 nm for photoionization of magnesium. The laser employs a V-cavity geometry with a gain chip at the end of one cavity arm and a lithium triborate (LBO) crystal for second

A Quantum Model of Thermodynamic Mechanical Oscillators

June 2, 2016
Author(s)
Jacob M. Taylor, Chiao-Hsuan Wang
We present a quantum mechanical model of a bath of spins coupled to the elasticity of a material. Motivated by understanding the emergence of thermodynamic restoring forces and oscillations, we show our model reproduces the behavior of a variety of

Interoperability: linking design and tolerancing with metrology

June 2, 2016
Author(s)
Ed Morse, Saeed Heysiattalab, Allison Barnard Feeney, Thomas D. Hedberg Jr.
On October 30, 2014 the American National Standards Institute (ANSI) approved QIF v 2.0 (Quality Information Framework, version 2.0) as an American National Standard. Subsequently in early 2016 QIF version 2.1 was approved. This paper describes how the QIF

Magnetic Transitions in the Topological Magnon Insulator Cu(1,3-bdc)

June 2, 2016
Author(s)
Robin Michael Daub Chisnell, Joel Helton, D. E. Freedman, D. K. Singh, F. Demmel, Chris Stock, D. G. Nocera, Y. S. Lee
Topological magnon insulators are a new class of magnetic materials that posses topologically nontrivial magnon bands. As a result, magnons in these materials display properties analogous to those of electrons in topological insulators. Here, we present

Methods and Tools for Performance Assurance of Smart Manufacturing Systems

June 2, 2016
Author(s)
Deogratias Kibira, Katherine C. Morris, Senthilkumaran Kumaraguru
The emerging concept of smart manufacturing systems is defined in part by the introduction of new technologies that are promoting rapid and widespread information flow within the manufacturing system and surrounding its control. These systems can deliver

Precise methane absorption measurements in the 1.64 micron spectral region for the MERLIN mission

June 2, 2016
Author(s)
Joseph T. Hodges, Stephen E. Maxwell, Zachary D. Reed, Hong Lin, Keeyon Sung, Malathy Devi, Thomas Warneke, Peter Spietz, Ha Tran, Thibault Delahaye
In this article we describe a high-precision laboratory targeting the R(6) manifold of the 2ν3 band of 12CH4. Accurate physical models of this absorption spectrum will be required by the Franco-German, Methane Remote Sensing LIDAR (MERLIN) space mission

Reliability-based structural performance indicators for structural members

June 2, 2016
Author(s)
Therese P. McAllister, Michel Ghosn, Dan Frangopol, Mahendra Shah, Sophia Diniz, Bruce Ellingwood, Lance Manuel, Fabio Biondini, N. Catbas, A. Strauss, Z. Zhao
The implementation of reliability methods for designing new structures and assessing the safety and evaluating the performance of existing structures and infrastructure systems has gained widespread acceptance. Most importantly, reliability-based design

Risk-based decision making for sustainable and resilient infrastructure

June 2, 2016
Author(s)
Therese P. McAllister, Zoubir Lounis
The development of sustainable and resilient infrastructure systems is a challenging task that involves a broad range of economic, social and environmental performance indicators, which need to be considered over the system life cycle. Conventional

Solute-derived Thermal Stabilization of Nano-sized Grains in Melt-Spun Aluminum

June 2, 2016
Author(s)
Andrew H. Baker, Paul G. Sanders, Eric Lass, Deepak Kapoor, Steve L. Kampe
Thermal stability of nanograined metals can be difficult due to the large driving force for growth that arises from the significant boundary area constituted by the nanostructure. Kinetic approaches for stabilization of the nanostructure effective at low

Test Methods for Robot Agility in Manufacturing

June 2, 2016
Author(s)
Anthony J. Downs, William S. Harrison, Craig I. Schlenoff
In today's world of fast-paced change and ever evolving technologies, there is constant pressure on manufactures for agile production. The need for customization and robustness require today's manufacturers to shift production goals quickly, and address

A SIMPLE METHOD OF ENHANCING THE ROBUSTNESS OF R/C FRAME STRUCTURES

June 1, 2016
Author(s)
Yihai Bao, Hai S. Lew, Fahim Sadek, Joseph A. Main
A simple debonding technique is proposed to reduce or eliminate strain localization in reinforcing bars in the region of wide flexural cracks in RC beams to enhance the resistance of RC buildings to disproportionate collapse (also referred to as
Displaying 16176 - 16200 of 73892
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