Skip to main content
U.S. flag

An official website of the United States government

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.

Magnetic Levitation System for the Dissemination of a Non-Artifact Based Kilogram



Zeina J. Kubarych, Patrick J. Abbott, Edwin R. Williams, Ruimin Liu, Vincent J. Lee


We describe a new approach to directly link air and vacuum mass measurements. This approach uses magnetic levitation along with vacuum and balance technology to realize vacuum mass measurements. It provides direct traceability to the International Prototype Kilogram through the U.S. national prototypes without the intermediary use of vacuum artifacts. This approach will provide a direct link between the national standard of mass currently defined in air and the vacuum-based realizations founded on fundamental constants. We describe the proof-of-concept experiment, basic operation principles and challenges, initial modeling calculations, preliminary results, and the next generation system and future expectations.
Conference Dates
November 27-December 1, 2007
Conference Location
Merida, MX
Conference Title
IMEKO International Conference


kilogram, magnetic levitation, mass


Kubarych, Z. , Abbott, P. , Williams, E. , Liu, R. and Lee, V. (2007), Magnetic Levitation System for the Dissemination of a Non-Artifact Based Kilogram, IMEKO International Conference, Merida, MX, [online], (Accessed July 13, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created November 27, 2007, Updated February 19, 2017