National Institute of Standards and Technology

Fluid Metrology Group

Michael R. Moldover, Leader and NIST Fellow
Process Measurements Division, 836.02
National Institute of Standards and Technology
100 Bureau Drive, Stop 8360
Gaithersburg, MD 20899-8360

Phone: (301)975-2459
Fax: (301)869-5924
Email: michael dot moldover at nist dot gov

Picture of the spherical acoustic resonator used to measure the Universal Gas Constant
(Click for enlargement; 32KB)

Mission

  • Develops next-generation standards for measuring process variables, especially temperature and pressure;
    • current focus: developing a primary pressure standard based on measuring the dielectric constant of helium
  • Develops novel measurement techniques and models for the thermophysical and interfacial properties of process streams;
    • current focus: using acoustic techniques to determine the thermophysical properties of semiconductor process gases
Picture of a cylindrical acoustic resonator used to measure thermodynamic properties of gases
(Click for enlargement; 21KB) 		Picture of the Greenspan acoustic viscometer used to measure viscosity of gases
(Click for enlargement; 40KB)
  • Fundamental studies of fluid properties;
    • current focus: measuring shear thinning and bulk viscosity of xenon near the liquid-vapor critical point in microgravity
Graph of the viscosity of xenon near the critical point measured on earth and in microgravity.
(Click for enlargement; 34KB) 		Picture of space shuttle launch
(Click for enlargement; 35KB)

What's happening in The Fluid Metrology Group

Staff

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Last modified: 3 July 2007