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You searched on: Author: gregory strouse

Displaying records 11 to 20 of 62 records.
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11. Metrology for comparison of displacements at the picometer level
Published: 7/31/2014
Authors: Jack A Stone Jr., Patrick F Egan, Jay H Hendricks, Gregory F Strouse, Douglas A Olson, Jacob E Ricker, Gregory E Scace, Donavon Gerty
Abstract: An apparatus capable of comparing displacements with picometer accuracy is currently being designed at NIST. In principle, we wish to compare one displacement in vacuum to a second, equal displacement in gas, in order to determine gas refractive inde ...

12. Effect of Impurities on Water Triple Point Cells
Published: 7/15/2014
Authors: A Peruzzi, J. van Geel, A. Uytun, M. Kalemci, E. Uysal, Gregory F Strouse, Yoana Y. Nuevo Ordonez, William C Davis
Abstract: Water triple point cells are the basis for the definition of the Kelvin and for the realization of the International Temperature Scale of 1990. The temperature differences between the cells are mainly caused by impurities arising in the cell water fr ...

13. Ultra-Sensitive Chip-Based Photonic Temperature Sensor Using Ring Resonator Structures
Published: 2/3/2014
Authors: Haitan Xu, Mohammad Hafezi, Jingyun Fan, Jacob M Taylor, Gregory F Strouse, Zeeshan Ahmed
Abstract: Temperature is one of the most measured quantity in the world, second only to time. Recently there has been considerable interest in developing photonic temperature sensors to leverage advancements in frequency metrology. Here we show that Silico ...

14. Picometer Metrology for Precise Measurement of Refractive Index, Pressure, and Temperature
Published: 12/18/2013
Authors: Jack A Stone Jr., Patrick F Egan, Donavon Gerty, Jay H Hendricks, Douglas A Olson, Jacob E Ricker, Gregory E Scace, Gregory F Strouse
Abstract: Fabry-Perot interferometers can be used for very precise measurement of the refractive index of gasses. This can enable increased accuracy of interferometer-based length measurement. In addition, because the refractive index of a gas depends on its ...

15. Methods for Accurate Cold-Chain Temperature Monitoring Using Digital Data-Logger Thermometers
Published: 9/11/2013
Authors: Michal J Chojnacky, Gregory F Strouse, W Wyatt Miller
Abstract: Complete and accurate records of vaccine temperature history are vital to preserving drug potency and patient safety. However, previously published vaccine storage and handling guidelines have failed to indicate a need for continuous temperature ...

16. Picometer metrology for precise measurement of refractive index, pressure, and temperature
Published: 7/14/2013
Authors: Jack A Stone Jr., Patrick F Egan, Jay H Hendricks, Gregory F Strouse, Douglas A Olson, Jacob E Ricker, Gregory E Scace
Abstract: For several years we have been studying the use of Fabry-Perot interferometers for precise measurement of the refractive index of gasses, where the primary motivation has been to improve interferometer-based length measurement. Because the refractiv ...

17. Faster, Better, Cheaper: New Automated Vacuum Calibration Service at NIST
Published: 10/1/2012
Authors: Jacob E Ricker, Jay H Hendricks, Douglas A Olson, Gregory F Strouse
Abstract: In today‰s fast-paced world and ever expanding quality assurance requirements, the National Institute of Standards and Technology (NIST) has developed a system to fill the need for faster, better, and cheaper low pressure calibrations (0.65 Pa to 130 ...

18. Thermal Analysis of Refrigeration Systems Used for Vaccine Storage
Published: 8/2/2012
Authors: Michal J Chojnacky, Gregory F Strouse
Abstract: The CDC administers over $3 billion worth of vaccines per year through the Vaccines for Children program. Vaccine storage temperature is critical to maintaining drug potency, and as much as one-third of delivered vaccines are wasted due to thermal e ...

19. Room Temperature Acoustic Transducers for High-Temperature Thermometry
Published: 7/9/2012
Authors: Dean C Ripple, William E. Murdock, Gregory F Strouse, Keith A Gillis, Michael R Moldover
Abstract: We have successfully conducted highly-accurate, primary acoustic thermometry at 600 K using a sound source and a sound detector at room temperature. We describe the source, the detector, and the ducts that connected them to our cavity resonator. Thi ...

20. Thermal Analysis of Refrigeration Systems Used for Vaccine Storage
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7656
Published: 11/2/2009
Authors: Michal J Chojnacky, W Wyatt Miller, Dean C Ripple, Gregory F Strouse
Abstract: Each year, billions of dollars of vaccines are stored in refrigerators at the facilities of a variety of medical providers. Many vaccines must be maintained in the range 2 °C to 8 °C to retain product potency. We have tested the performance of two t ...

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