An official website of the United States government
Here’s how you know
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.
There are now a large number of papers in the spectroscopic literature which make use of multiple-valued (frequently double-valued) coordinate systems and the...
Abstract Measuring the dissimilarity between non-rigid objects is a challenging problem in 3D shape retrieval. One potential solution is to construct the models...
Sayaka S. Suzuki, Samuel Manzello, Matthew Lage, George Laing
A full scale, proof-of-concept experiment was conducted to investigate firebrand production from a burning structure. In this experiment, NIST researchers were...
Jaime Juarez, Pramod Mathai, James Alexander Liddle, Michael Bevan
We report a feedback method for controlling the sizes of hexagonally close packed two-dimensional colloidal crystals in a microfluidic quadrupole electrode...
Most atomic models for a neutral hydrogen beam in fusion plasmas assume statistical (Boltzmann) distribution of populations for excited states with the same...
The accuracies of modern quantum logic clocks have surpassed those of standard atomic fountain clocks. These clocks also provide a greater degree of control, as...
The solubility of water in 1-octanol was measured from 2 °C to 96 °C by coulometric Karl Fischer titration. The mass fraction solubility at 25 ° was found to be...
In this work, we describe a new imaging system, called a thermo-microscope, that can be used to visualize atmospheric pressure thermal desorption phenomena at...
Han-Jong H. Chia, Feng Guo, Lyubov Belova, Robert McMichael
We report a demonstration of spectroscopic defect imaging in an array of ferromagnetic structures using ferromagnetic resonance force microscopy (FMRFM). The...
Stanko R. Brankovic, Burhanuddin Kagajwala, Jinnie George, Shruti Santangopalan, Gery R. Stafford, Paul Ruchhoeft
The work investigating the effect of saccharine as an additive on growth stress and structure of electrodeposited CoFe films is presented. The saccharine...
[Print Title: "Establishing a Secure Framework"] Recently, NIST completed a fundamental transformation of the traditional certification and accreditation...
We look at arithmetic progressions on elliptic curves known as Huff curves. By an arithmetic progression on an elliptic curve, we mean that either the x or y...
Joseph E. Curtis, Hirsh Nanda, Sheila Khodadadi, Marcus T. Cicerone, Hyo Jin Lee, Arnold McAuley, Susan Krueger
The structure, interactions and inter-protein configurations of the protein lysozyme were studied in a variety of phases that are biotechnologically relevant...
We present a novel imaging method for the measuring the position and magnetic moment of single micrometer scale particles. Our technique is based on magnetic...
Electrical signals are used for endpoint detection in plasma etching, but the origin of the electrical changes observed at endpoint is not well understood. As...
Zachary H. Levine, Thomas Gerrits, Alan L. Migdall, Daniel V. Samarov, Brice R. Calkins, Adriana E. Lita, Sae Woo Nam
Improving photon-number resolution of single-photon sensitive detectors is important for many applications, as is extending the range of such detectors. Here we...
Samuel L. Manzello, Sayaka S. Suzuki, Yoshihiko Hayashi
Until recently, attempting to experimentally quantify the vulnerabilities of structures to ignition from firebrand showers has remained elusive. The coupling of...
Gregory T. Linteris, Mauro Zammarano, Boris Wilthan, Leonard M. Hanssen
In large-scale fires, the input of energy to burning materials occurs predominantly by radiative transfer. The in-depth absorption of radiant energy by a...
Thomas J. Bruno, Tara J. Fortin, Tara M. Lovestead, Jason A. Widegren
The complex nature of finished fuels makes definitive studies on composition and combustion properties very difficult and uncertain. This has led to the...
Houxun H. Miao, Kartik A. Srinivasan, Vladimir A. Aksyuk
Microelectromechanical systems (MEMS) have been applied to many measurement problems in physics, chemistry, biology and medicine. In parallel, cavity...
Carbon dioxide capture and sequestration (CCS) is a very important industrial and environmental process to make use of the carbon dioxide as raw chemical for...
William H. Butler, William Rippard, Stephen E. Russek, Ranko R. Heindl
We model "soft" error rates for writing (WSER) and for reading (RSER) for spin-torque memory devices that have a free layer with easy axis perpendicular to the...
While cloud security concerns have consistently ranked as one of the top challenges to cloud adoption, it is not clear what security issues are special with...
Localizing a fluorescent particle by scanning a focused laser in its vicinity and analyzing the detected photon stream provides real-time information for a...
The isomerization and decomposition reactions of 2-pentyl and 3-pentyl radicals have been studied in a single-pulse shock tube over a temperature range of 973 K...
A rarely documented, yet industrially popular, approach to the size-exclusion chromatography (SEC) and related analysis of polymers that do not dissolve in...
Xiangdong Kang, Hui Wu, Junhong Luo, Wei Zhou, Ping Wang
Metal amidoborane ammoniates are a new type of promising hydrogen storage materials consisting of metal cation, [NH 2BH 3] anionic unit and NH 3 ligand. Herein...
Thomas R. Gentile, R L. Cooper, R. Alarcon, M J. Bales, E J. Beise, H Breuer, J. Byrne, T E. Chupp, Kevin J. Coakley, Maynard S. Dewey, Changbo Fu, Hans P. Mumm, Jeffrey S. Nico, B. O'Neill, K. Pulliam, Alan Keith Thompson, F E. Wietfeldt
As part of an experiment to measure the spectrum of photons emitted in beta-decay of the free neu- tron, we developed and operated a detector consisting of 12...
M Miral Dizdar, Pawel Jaruga, Susan Duclos, Pierre Aller, Susan Wallace, Susan Doublie
Formamidopyrimidine-DNA glycosylase (Fpg; MutM) is a DNA repair enzyme widely distributed in bacteria. Fpg recognizes and excises oxidatively modified purines...