151 citations · 535 across the 11 of their papers we have counts for
5 papers · 1 filter
A determination of the local acceleration of gravity for the NIST-4 watt balance
E. J. Leaman, D. Haddad, F. Seifert +5
A new watt balance is being constructed at the National Institute of Standards and Technology (NIST) in preparation for the redefinition of the International System of Units and th…
A LEGO Watt Balance: An apparatus to determine a mass based on the new SI
L. S. Chao, S. Schlamminger, D. B. Newell +6
A global effort to redefine our International System of Units (SI) is underway and the change to the new system is expected to occur in 2018. Within the newly redefined SI, the pre…
A self-calibrating optomechanical force sensor with femtonewton resolution
John Melcher, Julian Stirling, Felipe Guzman Cervantes +2
We report the development of an ultrasensitive optomechanical sensor designed to improve the accuracy and precision of force measurements with atomic force microscopy. The sensors…
A nonlinearity in permanent-magnet systems used in watt balances
Shisong Li, Stephan Schlamminger, Jon Pratt
Watt balances are used to measure the Planck constant and will be used in the future to realize mass at the kilogram level. They increasingly rely on permanent magnet systems to ge…
Determination of the Planck constant using a watt balance with a superconducting magnet system at the National Institute of Standards and Technology
Stephan Schlamminger, Darine Haddad, Frank Seifert +5
For the past two years, measurements have been performed with a watt balance at the National Institute of Standards and Technology (NIST) to determine the Planck constant. A detail…