Amount of substance

News and Updates

Sneezes, Rain Clouds and Ink Jets: NIST Improves the Ability of Optical Microscopes to Measure the Volume of Microdroplets

December 20, 2021

Sneezes, rain clouds, and ink jet printers: They all produce or contain liquid droplets so tiny it would take several billion of them to fill a liter bottle

Identifying Individual Molecules: NIST Study Suggests How to Build a Better ‘Nanopore’ Biosensor

April 27, 2021

Researchers have spent more than three decades developing and studying miniature biosensors that can identify single molecules. In five to 10 years, when such

After 90 Years, a Better Way to Measure the Composition of Paper

February 14, 2019

Researchers at the National Institute of Standards and Technology (NIST), in collaboration with the U.S. Government Publishing Office (GPO), have developed a

Projects and Programs

International Comparisons for Chemical Measurements

Ongoing

Because of NIST's role as the National Metrology Institute (NMI) in the U.S., the Chemical Sciences Division's measurement capabilities must be benchmarked

Advanced Ambient Mass Spectrometry, Secondary Ion Mass Spectrometry, and Ion Mobility Spectrometry

Ongoing

The Surface and Trace Chemical Analysis Group (STCAG) conducts both applied and fundamental research into the development, characterization, and analysis of

Ambient and Atmospheric Pressure Mass Spectrometry

Ongoing

Ambient and atmospheric pressure mass spectrometry platforms provide sample collection, transport, and ionization for vapor, aerosol, and liquid samples

Secondary Ion Mass Spectrometry Ion Source Development

Ongoing

The use of cluster sources such as C60 and argon gas cluster ion beams (Ar GCIB) allow for the analysis of the subsurface volume. It can also minimize the

Publications

Adjustment to the Light Element Areal Concentration Calculation for Neutron Depth Profiles

November 17, 2021

Author(s)

Jamie Weaver, Anna Jobs

Pilot Comparison CCQM-P177 – Monoterpenes in Nitrogen at 2.5 nmol mol-1 Final Report

September 27, 2021

Author(s)

Christina Cecelski, George C. Rhoderick, Joseph T. Hodges, Antonio Possolo, Olaf Wilke

The growing awareness of climate change, and continuing concerns regarding tropospheric and stratospheric chemistry, will require future measurements and

Thickness measurement of nm HfO2 films

August 11, 2021

Author(s)

K.J. Kim, A Kim, S.C. Kim, S.W. Song, H. Ruh, W.E.S. Unger, J. Radnik, J. Mata-Salazar, J.M. Juarez-Garcia, O. Cortazar-Martinez, A. Herrera-Gomez, P.E. Hansen, J.S. Madsen, C.A. Senna, B.S. Archanjo, J.C. Damasceno, C.A. Achete, H. Wang, M. Wang, Donald Windover, Eric B. Steel, A. Kurokawa, T. Fujimoto, Y. Azuma, S. Terauchi, L. Zhang, W.A. Jordaan, S.J. Spencer, A.G. Shard, L. Koenders, M. Krumrey, I. Busch, C. Jeynes

A pilot study for the thickness measurement of HfO2 films was performed by the Surface Analysis Working Group (SAWG) of the Consultative Committee for Amount of

Atom probe tomography

July 22, 2021

Author(s)

Ann Chiaramonti Debay, Baptiste Gault, Julie Cairney, Michael P. Moody, Oana Cojocaru-Miredin, Patrick Stender, Renelle Dubosq, Christoph Freysoldt, Surendra Kumar Makineni, Tong Li

Atom probe tomography (APT) provides three-dimensional compositional mapping with sub-nanometre resolution. The sensitivity of APT is in the range of parts per

Tools and Instruments

Local Electrode Atom Probe Tomography (LEAP)

Field evaporates (with a voltage and laser pulse) a sharp tip-shaped specimen. Collects the ionization products in a position-sensitive, time-of-flight mass

Material Analysis Using Neutron Depth Profiling

Light elements such as helium, lithium, boron, and nitrogen are essential constituents in materials that enable energy technologies; lithium ion batteries