Mass metrology

News and Updates

Opposite sides of a quartz crystal resonator

Universe in the Balance

February 12, 2020

Researchers at the National Institute of Standards and Technology (NIST) have found a way to link measurements made by a device integral to microchip

White Cat Hair on Black Pants: International Study Measures Stability of Precision Masses to Benefit Trade

November 26, 2018

When are two nominally identical kilogram masses no longer identical? When each goes to a different place and adsorbs varying amounts of moisture and

Comparison of Future Realizations of the Kilogram - Final Report

March 15, 2018

The Pilot Study — read 2016 article details — was completed in late 2016 and the Final Report was published on the BIPM website (PDF) in June of 2017. The main

Close up shot of the NIST Kibble balance with two kilograms stacked on it

New Measurement Will Help Redefine International Unit of Mass

June 30, 2017

Using a state-of-the-art device for measuring mass, researchers at the National Institute of Standards and Technology (NIST) have made their most precise

Events

5621: Calibration Certificate Evaluation

Thu, Jan 28 2021

This 2-hour webinar will introduce concepts necessary to successfully implement ISO/IEC 17025:2017 compliant calibration

Projects and Programs

Metrology and Standards for Nanoscale Stress

Our objective is to develop accurate measurement methods for the nanoscale stress distributions and surface defects that control device performance and

Quantifying the environmental contributions to mass change

Since the inception of the SI system of units, physical mass artifacts have been disseminated in order to realize the unit of the kilogram, essential to a broad

Electronic Kilogram

This project provides the basis for a new definition of mass, based on unchanging quantum properties of nature rather than a physical artifact. This is

Nanometrology: Composition and Structure of Nanomaterials

Advances in methods, instrumentation and analysis protocols are developed to enhance measurement science capabilities in nanomaterial elemental and

Publications

Simplified kilogram traceability for photon momentum radiometers

October 1, 2020

Author(s)

Kyle A. Rogers, Paul A. Williams, Gordon A. Shaw, John H. Lehman

High power laser applications in areas such as laser processing of materials can require an accurately measured laser power. Radiation pressure-based laser

Construction of a Dual Protease Column, Subzero (-30 °C) Chromatography System and Multi-channel Precision Temperature Controller for Hydrogen-Deuterium Exchange Mass Spectrometry

August 12, 2020

Author(s)

Jeffrey W. Hudgens

This tutorial provides mechanical drawings, electrical schematics, parts lists, stereolithography (STL) files for producing three-dimensional (3D)-printed parts

Linking mass measured by the quartz crystal microbalance to the SI

February 12, 2020

Author(s)

Corey A. Stambaugh, Hamza Shakeel, Maritoni A. Litorja, Joshua M. Pomeroy

The quartz crystal microbalance has been deployed across industry and academy for the monitoring of the film thickness during depositions. Over a half-a-century

The Units for mass, voltage, resistance, and current in the SI

June 24, 2019

Author(s)

Stephan Schlamminger, Patrick J. Abbott, Zeina J. Kubarych, Dean G. Jarrett, Randolph E. Elmquist