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You searched on: Author: Gregory Strouse

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Published: 9/3/2015
Authors: Jay H Hendricks, Jacob E Ricker, Jack A Stone Jr., Patrick F Egan, Gregory E Scace, Gregory F Strouse, Douglas A Olson, Donavon Gerty
Abstract: The future of pressure and vacuum measurement will rely on lasers and Fabry-Perot optical cavities, and will be based on fundamental physics of light interacting with a gas. Light interacts at the quantum level with matter such that light travels at ...

2. Performance of a dual Fabry-Perot cavity refractometer
Published: 8/18/2015
Authors: Patrick F Egan, Jack A Stone Jr., Jay H Hendricks, Jacob E Ricker, Gregory E Scace, Gregory F Strouse
Abstract: We have built and characterized a refractometer that utilizes two Fabry-Perot cavities formed on a dimensionally stable spacer. In the typical mode of operation, one cavity is held at vacuum and the other cavity is filled with nitrogen gas. The dif ...

3. Developing Microwave Photonic Temperature Sensors
Published: 7/9/2015
Authors: John S Quintavalle, Bernard J Filla, Gregory F Strouse, Zeeshan Ahmed
Abstract: In recent years there has been considerable interest in exploiting the temperature dependence of sapphire whispering gallery mode frequency to develop a mechanically stable, high accuracy temperature sensor. Disk-resonator-based devices have been dem ...

4. Fiber Bragg Gratings Embedded in 3D-Printed Scaffolds
Published: 6/1/2015
Authors: Peter Liacouras, Khazar Choudhry, Grant Grant, Gregory F Strouse, Zeeshan Ahmed
Abstract: In recent years there has been considerable interest in utilizing fiber optic based sensors as embedded sensor for fabricating smart materials. One of the primary motivations is to provide real-time information on the structural health of the materia ...

5. The Redefinition of the SI: Impact on Calibration Services at NIST
Published: 6/1/2015
Authors: Neil M Zimmerman, Jon Robert Pratt, Michael R Moldover, David B Newell, Gregory F Strouse
Abstract: As most readers are probably at least vaguely aware, it is likely that the SI system of units will be redefied in 2018. This redefinition would fundamentally change the logical structure of the SI, with one result being a substantial change in how ma ...

6. Transitioning from mercury thermometers to alternative thermometers
Published: 5/14/2015
Authors: Christina Dawn Cross, W Wyatt Miller, Gregory F Strouse
Abstract: The presentation discusses approaches to effectively transition from mercury thermometers to alternative thermometers with the goal of reducing the level of mercury released into the environment from the disposal or accidental breakage of mercury ...

7. In-situ Temperature Calibration Capability for Dimensional Metrology
Published: 12/1/2014
Authors: Prem Kumar Rachakonda, Daniel S Sawyer, Balasubramanian Muralikrishnan, Christopher J Blackburn, Craig M Shakarji, Gregory F Strouse, Steven David Phillips
Abstract: The Dimensional Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) has the capability to perform large range dimensional measurements in a facility, called the Tape Tunnel. The Tape Tunnel is equipped with a 60 m l ...

8. Erratum: Thermal Expansion of Platinum and Platinum-Rhodium Alloys.
Series: Journal of Research (NIST JRES)
Report Number: 091.037erata2014
Published: 10/22/2014
Authors: Gregory F Strouse, James F. Schooley, R. E. Edsinger, M. L. Reilly

Published: 9/12/2014
Authors: Zeeshan Ahmed, Gregory F Strouse
Abstract: For the past century, industrial temperature measurements have relied on resistance measurement of a thin metal wire or filament whose resistance varies with temperature. Though resistance thermometers can routinely measure industrial temperatures wi ...

10. In Search of Better Pressure Standards
Published: 8/1/2014
Authors: Jay H Hendricks, Jacob E Ricker, Patrick F Egan, Gregory F Strouse
Abstract: Based on highly accurate optical interferometry and fundamental quantum calculations, researchers at the National Institute of Standards and Technology (NIST) in the US are developing an improved definition of the SI unit for pressure that will consi ...

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