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Measurement Services for Optoelectronics at NIST

June 16, 1999

Author(s)

Sally S. Bruce

The National Institute of Standards and Technololgy (NIST) offers a variety of hundreds of measurement services to its customers as a part of it's core mission. These services include reference data, reference materials, and physical measurements and

Dimensional Metrology with the NIST Calibrated Atomic Force Microscope

June 1, 1999

Author(s)

Ronald G. Dixson, R Koning, V W. Tsai, Joseph Fu, Theodore V. Vorburger

… recently achieved 0.2 nm expanded uncertainty (k=2) on a 20 nm step. We also participated in the recently completed …

Rate Coefficients for the Propargyl Radical Self-Reaction and Oxygen Addition Reaction Measured Using Ultraviolet Cavity Ring-Down Spectroscopy

May 1, 1999

Author(s)

D B. Atkinson, Jeffrey W. Hudgens

… absorption cross-section obtained ς332.5= 413 60 x 10 -20 molec -1 -cm 2 at 332.5 nm. …

The New NIST Atomic Spectra Database (1999)

March 1, 1999

Author(s)

Daniel E. Kelleher, William C. Martin, Wolfgang L. Wiese, J Sugar, Jeffrey R. Fuhr, Karen J. Olsen, Arlene Musgrove, Peter J. Mohr, Joseph Reader, G R. Dalton

The new NIST Atomic Spectra Database (ASD) interactive Web site is accessible via: http://atm.nist.gov/asd. The new version covers a much wider range of atomic and ionic transitions and energy levels than earlier versions, and all data are integrated. ASD

Property-Performance Studies of SnO 2 Sensing Films Using Micromachined Arrays

February 22, 1999

Author(s)

R M. Walton, Richard E. Cavicchi, Stephen Semancik

… We correlate the effects of catalyst thickness (0 nm to 20 nm), annealing (to 700 degrees C), and composition …

Structure and Spectroscopy of Metallo-Lactamase Active Sites

February 1, 1999

Author(s)

H S. Gilson, Morris Krauss

… to the open-shell cobalt cation results in at least 20 ligand-to-metal charge transfer (LMCT) lines. The lowest …

A Thermodynamic Investigation of Reactions Catalyzed by Tryptophan Synthase

July 27, 1998

Author(s)

N Kishore, Yadu D. Tewari, D Akers, Robert N. Goldberg, E. W. Miles

… tryptophan synthase [alpha] 2 [Beta] 2 complex (EC 4.2.1.20) and its subunits:indole(aq) + L-serine(aq) = …

Universal Relationships in Sooting Methane-Air Diffusion Flames

January 1, 1998

Author(s)

C. R. Kaplan, G P. Patnaik, K. Kailasanath

The laminar flamelet concept is based on the premise that scalar properties in laminar diffusion flames are nearly universal functions of mixture fraction. It has been well-tested and proven for temperature and the major species, however, few studies have

Reactivity of Product Gases Generated in Idealized Enclosure Fire Environments

July 5, 1992

Author(s)

William M. Pitts

… are reported for a range of residence times (0-20 s) and global equivalence ratios (0.5-2.83). The dominant …

X-ray Reflectivity Probing the Structural Evolution of Sunflower Proteins Adsorbed at the Air-Water Interface

November 26, 2024

Author(s)

Guangcui Yuan, Sushil Satija, Laurence Ramos, Amelie Banc

… of the corresponding hydrophobic portion being about 20 Å. For solutions at relatively high concentrations (C ≥ …

The Global and Local Structure of Medium-Scale Pool Fires

October 24, 2024

Author(s)

Kunhyuk Sung, Ryan Falkenstein-Smith, Matthew Bundy, Marco Fernandez, Anthony Hamins

… heptane, and 37 cm diameter methane (34 kW) and propane (20 kW, 34 kW, and 50 kW) gaseous pool fires. The measurements …

Autonomous Aerial Drones Connecting Public Safety: Opportunities and Challenges for the Future

September 26, 2024

Author(s)

Don Harriss, Raymond Sheh, Karen Geappen

Reliable voice and data communications are critical in supporting public safety responders during incidents and disasters and will become more important as ground robots and Internet-of-Things (IoT) sensors for public safety applications proliferate

Research on Fixture-Level Peak Probability of Water Use in Commercial Buildings

June 5, 2024

Author(s)

Tao Li, Steven Buchberger, Toritseju Omaghomi, Gary Klein, William M. Healy

… Demand Calculator. Finally, peak flow measurements at 20 large contemporary residential buildings across the US are …

Estimating impacts of reducing acrylonitrile exposure on lung cancer mortality with the parametric g-formula

May 20, 2024

Author(s)

Alexander Keil, Gregory Haber, Barry Graubard, Patricia Stewart, Debra Silverman, Stella Koutros

Objectives: To inform the potential human carcinogenicity of acrylonitrile, we estimate associations between acrylonitrile exposures and lung cancer mortality in US workers with the objectives of 1) assessing potential for healthy worker survivor bias 2)

Ozone generation and chemistry from 222 nm germicidal ultraviolet light in a fragrant restroom

May 20, 2024

Author(s)

Michael F. Link, Rileigh Robertson, Andrew Shore, Behrang Hamadani, Christina Cecelski, Dustin Poppendieck

… for both weekends and reacted rapidly (e.g., at rates of 3.7 h−1 for the first weekend and 2.0 h−1 for the second) with …

Bottom-up Au Filling of Trenches in Curved Wafers

March 4, 2024

Author(s)

Daniel Josell, Thomas P. Moffat, Thomas Gnaupel-Herold, David Raciti, Martin Stauber, Yu Q, Liyang Chen, M Rawlik, Marco Stampanoni, Lucia Romano

… to curved holders with concave radius of 30 cm and 20 cm. The Au-filled gratings retain substantial curvature …

Broadband dual-comb hyperspectral imaging and adaptable spectroscopy with programmable frequency combs

January 29, 2024

Author(s)

Fabrizio Giorgetta, Jean-Daniel deschenes, Richard L. LIEBER, Ian Coddington, Nathan Newbury, Esther Baumann

… obtain dual-comb hyperspectral movies at a frame rate of 20 Hz and broad optical spectral coverage of over 10 THz. …

The Magnetic Suspension Balance - 40 Years of Advancing Densimetry and Sorption Science Xiaoxian Yang1, Reiner Kleinrahm2, Mark O. McLinden3, Markus Richter1,

November 7, 2023

Author(s)

Xiaoxian Yang, Reiner Kleinrahm, Mark O. McLinden, Markus Richter

… than 85 MSB-based sorption analyzers have been set up over 20 countries. The number of new MSB-based sorption analyzers, …

Temperature-induced DNA density transition in phage l capsid revealed with contrast-matching SANS

October 30, 2023

Author(s)

Jose Villanueva Valencia, Efthymios Tsimtsirakis, Susan N. Krueger, Alex Evilevitch

… phase in the core. As the temperature is increased from 20 °C to 40 °C, we found that the core-DN phase undergoes a …

Modeling of Black PMMA in the NIST Gasification Apparatus using Fire Dynamics Simulator

October 20, 2023

Author(s)

Jason Floyd, Morgan Bruns, Isaac Leventon, Kevin B. McGrattan

… detail of 19 the applied flux included in the simulation. 20 3. Simulations of all material property sets contained in … there was a maximum deviation in remaining 33 mass of 7 to 8 % of the original sample mass. …

High-sensitivity frequency comb carrier-envelopephase metrology in solid state high harmonic generation

October 19, 2022

Author(s)

Daniel Lesko, Kristina Chang, Scott Diddams

… erbium-fiber frequency comb at 1550 nm to produce 12 nJ, 20 fs pulses that are focused to the TW/cm2 level. In a …

Semi-automated assembly of high-quality diploid human reference genomes

October 19, 2022

Author(s)

Erich Jarvis, Giulio Formenti, Jennifer McDaniel, Nathanael David Olson, Justin Wagner, Justin Zook, Kerstin Howe, Karen Miga

… The current human reference genome, GRCh38, represents over 20 years of effort to generate a high-quality assembly, which …

Determination of energy correction coefficient for neutron albedo dosimeter. Three approaches

June 16, 2022

Author(s)

Alexander Romanyukha, Jacob LaManna, Alan Keith Thompson, Keith Consani, Jessica Mintz

… of slow neutrons in the neutron dose rate is more than 20%. An excellent correlation between the NECF determined by …

Search for electron-neutrino transitions to sterile states in the BEST experiment

June 9, 2022

Author(s)

Jeffrey S. Nico, V. Barinov, S.N. Danshin, V.N. Gavrin, V.V. Gorbachev, D.S. Gorbunov, T.V. Ibragimova, Yu.P. Kozlova, L.V. Kravchuk, V.V. Kuzminov, B.K. Lubsandorzhiev, Yu.M. Malyshkin, I.N. Mirmov, A.A. Shikhin, E.P. Veretenkin, B.T. Cleveland, H. Ejiri, S.R. Elliott, I. Kim, R. Massarczyk, D. Frekers, W.C. Haxton, V.A. Matveev, G.V. Trubnikov, A.L. Petelin, V.A. Tarasov, A.I. Zvir, R.G.H. Robertson, D. Sinclair, J.F. Wilkerson

… 3.4-MCi 51Cr neutrino source 10 times for a total of 20 independent 71Ge extractions from the two Ga targets. The …

Robust Bottom-Up Gold Filling of Deep Trenches and Gratings

March 25, 2022

Author(s)

Daniel Josell, William Alexander Osborn, Maureen E. Williams

… deep, with aspect ratios (AR, height/width) of just below 20 and 15, respectively, in near-neutral 0.16 mol∙L−1 …

Advanced communications
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Buildings and Construction
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