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The Fluid Metrology Group leads the world in designing and using gas-filled acoustic resonators for measuring the thermodynamic temperature T, the Boltzmann
NIST scientists are developing a highly accurate primary standard for pressure in the range 2 MPa to 7 MPa based on fundamental physical properties of helium
Current work, within the NIST on a Chip Program, includes developing microfluidic systems that improve the accuracy of flow measurements, which are fundamental
Flow meters that rely on measuring the pressure drop across a laminar flow element can be accurately calibrated using a benign surrogate gas (such as helium or
The lack of repeatable process outcomes from additive manufacturing (AM) has been broadly acknowledged as an impediment to widespread implementation. While most
The flow of polymer composites via injection molding, spraying or spreading on surfaces is crucial to polymer composite manufacturing. For single-phase liquids
The NIST Chemistry WebBook is a site on the Internet ( http://webbook.nist.gov/) that provides convenient access to a variety of physical and chemical property
This NIST-wide collaborative project aims to improve biotechnology and medical diagnostics by increasing the resolution and precision of measurements of cells
Our goal is to develop combinatorial and high-throughput measurement approaches for rapid characterization of the structure and phase behavior of multicomponent
The lack of repeatable process outcomes from additive manufacturing (AM) has been broadly acknowledged as an impediment to widespread implementation. While most
Presently used methods to measure CO 2 and other emissions from smoke stacks have errors of 20 % or more depending on the level of swirl in the flow. The
The objective of this project is to characterize temperature effects on flow meters used in cryogenic liquids, e.g. turbine and Coriolis flow meters. With a
Today, demonstration vehicles are refueled with hydrogen from dispensers within 3 to 5 minutes using sequential gas releases from a bank of pressurized
Accurate flow measurements are needed for test fluids, temperatures, pressures, flows, and installation conditions that differ from those used during NIST's