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NIST Authors in Bold

Displaying 15526 - 15550 of 73697

Enabling Smart Manufacturing Technologies for Decision-Making Support

August 21, 2016
Author(s)
Moneer M. Helu, Don E. Libes, Joshua Lubell, Kevin W. Lyons, Katherine C. Morris
Smart manufacturing combines advanced manufacturing capabilities and digital technologies throughout the product lifecycle. These technologies can provide decision-making support to manufacturers through improved monitoring, analysis, modeling, and

Investigating predictive metamodeling for additive manufacturing

August 21, 2016
Author(s)
Zhuo Yang, Douglas Eddy, Sundar Krishnamurty, Ian Grosse, Peter O. Denno, Felipe F. Lopez
Additive manufacturing processes offer significant commercial advantages due to unique and advanced process capabilities. Production of metal parts can involve trial and error. This is often due to limited understanding of variability in properties and the

The Low-Temperature Structural Behavior of Sodium 1-Carba-closo-decaborate: NaCB 9 H 10

August 21, 2016
Author(s)
Hui Wu, Wan Si NMN Tang, Wei Zhou, Jacob Daniel Tarver, Vitalie Stavila, Craig Brown, Terrence J. Udovic
Two ordered phases of the novel solid superionic conductor sodium 1-carba-closo-decaborate (NaCB 9H 10) were identified via synchrotron x-ray powder diffraction in combination with first-principles calculations and neutron vibrational spectroscopy. A

Optimized Air-to-Refrigerant Heat Exchanger With Low-GWP Refrigerants

August 20, 2016
Author(s)
Piotr A. Domanski, Hong Hyun Cho
This paper presents an analytical evaluation of the performance of low-GWP refrigerants in a finned-tube evaporator used for residential cooling applications. The study employed an evolutionary-computation optimization module to examine the effect of a

Chapter 1: Introduction to low temperatures materials and mechanisms

August 19, 2016
Author(s)
Ray Radebaugh
Operating at cold temperatures is essential to many processes in numerous fields of science and engineering including refrigeration, space exploration, electronics, physics, chemistry, thermodynamics, and medicine. Increasingly, there is a growing interest

Point source atom interferometry with a cloud of finite size

August 19, 2016
Author(s)
Gregory W. Hoth, Bruno M. Pelle, Stefan Riedl, John E. Kitching, Elizabeth A. Donley
We demonstrate a two axis gyroscope by use of light pulse atom interferometry with an expanding cloud of atoms in the regime where the cloud has expanded by 1.1 to 5 times its initial size during the interrogation. Rotations are measured by analyzing

Structure-Dependent Vibrational Dynamics in Mg(BH 4 ) 2 Polymorphs Probed with Neutron Vibrational Spectroscopy and First-Principles Calculations

August 19, 2016
Author(s)
Mirjana NMN Dimitrievska, James L. White, Wei Zhou, Vitalie Stavila, Leonard E. Klebanoff, Terrence J. Udovic
The structure-dependent vibrational properties of different Mg(BH 4)d2^ polymorphs (α, β, γ and δ phases) were investigated with a combination of neutron vibrational spectroscopy measurements and density functional theory (DFT) calculations, with emphasis

Diffusion in FCC Co-Al-W Alloys at 900 degree C and 1000 degree C

August 17, 2016
Author(s)
Kil-Won Moon, Carelyn E. Campbell, Maureen E. Williams, William J. Boettinger
Diffusion couple experiments between various Co-rich face centered cubic alloys in the Co-W-Al ternary system have been conducted at 900 degree C and 1000 degree C. Diffusion coefficients have been extracted for the Co-W binary and for ternary alloys at

Evaluating the Initial Field Performance of HVAC-Cx for Air Handling Units

August 17, 2016
Author(s)
Natascha S. Milesi-Ferretti, Michael A. Galler, Steven T. Bushby
Automated commissioning tools facilitate the ongoing commissioning process to improve occupant comfort, ensure the persistence of correct system operation, and reduce energy consumption. These tools decrease the time and the skill level required to carry

Shake Table Testing of an Elevator System in a Full-Scale Five-Story Building

August 17, 2016
Author(s)
Xiang Wang, Tara C. Hutchinson, Rodrigo Astroza, Joel P. Conte, Jose I. Restrepo, Matthew Hoehler, Waldir Ribeiro
This paper investigates the seismic performance of a functional traction elevator as part of a full-scale five-story building shake table test program. The test building was subjected to a suite of earthquake input motions of increasing intensity, first

Structure and Dynamics of Interacting Nanoparticles in Semidilute Polymer Solutions

August 17, 2016
Author(s)
Ryan Poling-Skutvik, Katrina Irene S. Mongcopa, Antonio Faraone, Suresh Narayanan, Jacinta C. Conrad, Ramanan Krishnamoorti
We investigate the structure and dynamics of silica nanoparticles and polymer chains in semidilute solutions of high molecular weight polystyrene in 2-butanone to determine the effect of long range interparticle interactions on the coupling between

Antiferromagnetic domain wall motion driven by spin-orbit torques

August 16, 2016
Author(s)
Takayuki Shiino, Se-Hyeok Oh, Paul M. Haney, Seo-Won Lee, Gyungchoon Go, Byong-Guk Park, Kyung-Jin Lee
We theoretically investigate dynamics of antiferromagnetic domain walls driven by spin-orbit torques in antiferromagnet/heavy metal bilayers. We show that spin-orbit torques drive antiferromagnetic domain walls much faster than ferromagnetic domain walls

DRILLING DOWN ON SMART MANUFACTURING -- ENABLING COMPOSABLE APPS

August 16, 2016
Author(s)
Boonserm Kulvatunyou, Nenad Ivezic, KC Morris, Simon P. Frechette
One of the most exciting new capabilities in Smart Manufacturing (SM) is the provisioning of manufacturing services as unbundled "apps," which could be significantly more flexible and less expensive to use than the current generation of monolithic

Photochemical transformations of thiolated polyethylene glycol coatings on gold nanoparticles

August 16, 2016
Author(s)
Stacey M. Louie, Justin M. Gorham, Eric A. McGivney, Jingyu Liu, Kelvin B. Gregory, Vincent A. Hackley
Photochemical reactions can result in significant transformations of manufactured nanomaterials in sunlit environments. While transformations of inorganic nanoparticles (NPs) have been investigated extensively, much less attention has been focused on the
Displaying 15526 - 15550 of 73697
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