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Search Publications

NIST Authors in Bold

Displaying 51 - 75 of 2915

The Fundamental Physical Constants

August 1, 2000
Author(s)
Peter J. Mohr, Barry N. Taylor
… thereafter, in 1969, CODATA established the Task Group on Fundamental Constants to periodically provide the scientific … in a searchable database provided by the Fundamental Constants Data Center of the NIST Physics. … … Taylor … Physics Today … CODATA, fine-structure constant, fundamental constants, molar gas constant, Planck constant, …

Historical Review of the Metered Section Area for Guarded Hot Plates

December 31, 2019
Author(s)
Robert R. Zarr, Stacy M. Bruss, David McElroy
… of the calculation techniques is presented for round plates having diameters from 250 mm to 1000 mm, a … are not negligible because large gaps (4 mm) on small plates (250 mm) can have an effect of 10 %, or more, on the … Review of the Metered Section Area for Guarded Hot Plates …

Design Concepts for a New Guarded Hot Plate Apparatus for Use Over an Extended Temperature Range

October 1, 2002
Author(s)
D R. Flynn, Robert R. Zarr, Mahn-Hee Hahn, William M. Healy
… of Standards and Technology is building a new guarded hot plate apparatus (GHP) for use at temperatures from 90 K to … thermometry wells, and sensor leads coming from the hot plate and the cold plates; provision of a system to provide … force between the specimens and the contacting hot and cold plate surfaces; provision of an accurate system for in-situ …

Thermal Modeling of Multiple-Line-Heat-Source Guarded Hot Plate Apparatus

October 1, 2002
Author(s)
William M. Healy, D R. Flynn
… and Technology is building an advanced-design guarded hot plate apparatus of advanced design to provide very accurate … errors and uncertainties. In an idealized guarded hot plate apparatus, the effective thermal conductivity is … simply computed from the measured power input to the meter plate heater, the effective area of the meter plate, the …

Fatigue Pre-Cracking Curved Wide Plates in Bending

September 27, 2010
Author(s)
Mark D. Richards, Timothy S. Weeks, Joseph D. McColskey, Bo Wang, Yong-Yi Wang
… the closed form solutions for stress-intensity (K) for flat plates in bending can be used to approximate the K for CWP … Calgary, Alberta, Canada … Fatigue Pre-Cracking Curved Wide Plates in Bending …

Small Business Information Security: The Fundamentals

November 3, 2016
Author(s)
Patricia R. Toth, Celia Paulsen
… small businesses. This document is intended to present the fundamentals of a small business information security … 1 … small business, information security, cybersecurity, fundamentals … Small Business Information Security: The Fundamentals …

WELD TRACK DISTORTION IN LASER POWDER BED FUSION OF NICKEL SUPERALLOY 625

July 11, 2022
Author(s)
Jason Fox, Christopher Evans, Aarush Sood, Romaine Isaacs, Brigid Mullany, Angela Allen, Ed Morse
… high temperature alloys can be used. This work focuses on nickel super alloy 625 (IN625) and explicitly on … in Additive Manufacturing … laser powder bed fusion, nickel superalloy 625, surface texture … Proceedings of the …

Constants, Fundamental

October 16, 2008
Author(s)
Barry N. Taylor, Peter J. Mohr
… for the romance of the next decimal place, or why the fundamental physical constants are important and why their … (2) how a self-consistent set of best values of the fundamental constants is obtained, with emphasis on the 2002 … CODATA recommended values of the fu, CODATA, data analysis, fundamental constants, least-squares adjustments … …

Controlled Formation and Resistivity Scaling of Nickel Silicide Nanolines

February 25, 2009
Author(s)
Bin Li, Zhiquan Luo, Paul S. Ho, Li Shi, Lew Rabenberg, JiPing Zhou, Richard A. Allen, Michael W. Cresswell
… We demonstrate a top-down method to fabricate nickel mono-silicide (NiSi) nanolines with smooth side walls … Michael W. Cresswell … Nanotechnology … electron transport, nickel silicide, resistance, nano-lines, fabrication, … linewidth … Controlled Formation and Resistivity Scaling of Nickel Silicide Nanolines …

Surface Topography and Melt Pool Behavior in Rapid Turnaround Regions of Laser Powder Bed Fusion Additive Manufacturing of Nickel Superalloy 625

July 13, 2023
Author(s)
Jason Fox, Christopher Evans, Jordan Weaver, Jesse Redford
… surface topography and melt pool cross section geometry on nickel superalloy 625 samples is presented to identify … Technology … additive manufacturing, surface analysis, nickel alloy … Surface Topography and Melt Pool Behavior in … of Laser Powder Bed Fusion Additive Manufacturing of Nickel Superalloy 625 …

Surface topography process signatures in nickel superalloy 625 additive manufacturing

September 23, 2021
Author(s)
Jason Fox, Angela Allen, Brigid Mullany, Ed Morse, Romaine Isaacs, Marc Lata, Aarush Sood, Christopher Evans
… pool wake), and particles. This work, utilizing two sets of nickel superalloy 625 samples fabricated in an EOS M290 … Evans … St. Gallen, CH … Laser Powder Bed Fusion, Nickel Superalloy, Surface structure, Microstructure … Joint …

Experimental Measurements of Condensation on Vertical Plates With Enhanced Fins

January 1, 1987
Author(s)
Mark A. Kedzierski
… Fins were accurately machine on vertical plates with the electric discharge (EDM) process. … MA … Boiling and Condensation in Heat Transfer … vertical plates, enhanced fins, condensation, heat transfer, surface … … Experimental Measurements of Condensation on Vertical Plates With Enhanced Fins …

Phase Composition and Phase Transformation of Additively Manufactured Nickel Alloy 718 AM Bench Artifacts

February 5, 2024
Author(s)
Fan Zhang, Aaron Johnston-Peck, Lyle E. Levine, Michael Katz, Kil-Won Moon, Maureen E. Williams, Sandra W. Young, Andrew J. Allen, Olaf Borkiewicz, Jan Ilavsky
… focuses on the phase composition and phase evolution of AM nickel alloy 718, a nickel-based superalloy, to provide benchmark data essential … the atomic and microstructural transformations of AM nickel alloy 718, thereby enhancing the reliability and …

2014 CODATA RECOMMENDED VALUES OF THE FUNDAMENTAL CONSTANTS OF PHYSICS AND CHEMISTRY

April 12, 2017
Author(s)
Peter J. Mohr, David B. Newell, Barry N. Taylor
… Wallet card of 2014 CODATA RECOMMENDED VALUES OF THE FUNDAMENTAL CONSTANTS OF PHYSICS AND CHEMISTRY, NIST SP-959 … , Barry N. Taylor … Special Publication (NIST SP) - 959 … fundamental constants, wallet cards, CODATA … 2014 CODATA RECOMMENDED VALUES OF THE FUNDAMENTAL CONSTANTS OF PHYSICS AND CHEMISTRY …

Using Finite Element Analysis to Design a New Guarded Hot Plate Apparatusfor Measuring the Thermal Conductivity of Insulating Materials

October 1, 2001
Author(s)
William M. Healy
… Standards and Technology (NIST) is developing aguarded hot plate apparatus to measure the thermal conductivity of … temperatures of the plates, the heat input to the hotter plate, and the thickness of the specimen. In order for this apparatus to provide accurate results, however, each plate must be maintained at a nearly uniform temperature, …

Superconformal Bottom-Up Nickel Deposition in High Aspect Ratio Through Silicon Vias

September 23, 2016
Author(s)
Daniel Josell, Thomas P. Moffat
… Abstract: This work demonstrates void-free nickel filling of 56 μm tall, annular Through Silicon Vias … … Daniel Josell , Thomas P. Moffat … ECS Transactions … Nickel, TSV, through silicon via, filling, superconformal, superfill … Superconformal Bottom-Up Nickel Deposition in High Aspect Ratio Through Silicon Vias …

A nonlinear model for gusset plate connections

March 15, 2014
Author(s)
Dat Duthinh, Chiara Crosti
… … Bridges, connections, finite-element analysis, gusset plate, linear springs, steel truss. … A nonlinear model for gusset plate connections …

Trapping Highly Charged Ions: Fundamentals and Applications

April 1, 2000
Author(s)
John D. Gillaspy
… Fundamentals and applications for trapping highly charged … ions. … John D. Gillaspy … Trapping Highly Charged Ions: Fundamentals and Applications … atoms, EBIT, electron beam … Publisher, Hauppauge, NY … Trapping Highly Charged Ions: Fundamentals and Applications …
Displaying 51 - 75 of 2915
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