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Conferences

Multiscale Correlative Measurements of Nanoparticles in Cells

Author(s)
Aric W. Sanders, Kavita M. Jeerage, Cindi Schwartz, Alexandra E. Curtin, Ann C. Chiaramonti Debay
Nanoparticles are emerging as invaluable tools in disease diagnosis, disease treatment and imaging contrast enhancement agents. The interactions of

Milligram Mass Metrology Using Electrostatics

Author(s)
Gordon A. Shaw, John A. Kramar
— Although mass has historically been defined using an artifact standard, other means of realization are possible. One alternative approach employs a precision

The Design of the NEW NIST-4 Watt Balance

Author(s)
Leon S. Chao, Stephan Schlamminger, Frank C. Seifert, Yusi A. Cao, Darine El Haddad, David B. Newell, Jon R. Pratt
The design of the new permanent-magnet driven watt balance and novel mechanical features will demonstrate the high-precision capabilities of a large complex

A 100 Tohm Guarded Hamon Transfer Standard

Author(s)
Dean G. Jarrett, Edward O'Brien, Marlin E. Kraft
Guarded Hamon transfer standards are used at NIST for scaling to high resistance levels. An improved design for a guarded Hamon transfer standard in the range

Systematic Error Resolved in NIST Johnson Noise Thermometer

Author(s)
Alessio Pollarolo, Weston L. Tew, Horst Rogalla, Samuel P. Benz
In the Johnson Noise Thermometry approach, Boltzmann’s constant k is obtained as the ratio of the noise power measured across a sense resistor at the triple

Alignment and testing of the NIST Calculable Capacitor

Author(s)
Yicheng Wang, Felipe Guzman, Corey A. Stambaugh, Radek Smid, Hugo Zuniga Calvo, Andrew D. Koffman, Jon R. Pratt, John R. Lawall
This paper reports progress on the NIST effort to develop a new calculable capacitor, focusing on improvement of the guard electrode motion control as well as

Construction and Performance of the NIST-4 Magnet System

Author(s)
Frank C. Seifert, Alireza R. Panna, Leon S. Chao, Yusi A. Cao, Darine El Haddad, Shisong Li, Stephan Schlamminger, Jon R. Pratt, Heeju Choi, Lori Haley
A watt balance is a promising instrument to realize the unit of mass at the kilogram level. The magnet system is one of the key elements of such an instrument

Heterodyne interferometer with subnanometer accuracy

Author(s)
Darine El Haddad, Frank C. Seifert, Stephan Schlamminger, Leon S. Chao, David B. Newell, Jon R. Pratt
This paper gives a brief description of the laser interferometer system designed for the next generation watt balance experiment aimed to realize the unit of

Broadband Rydberg Atom Based Self-Calibrating RF E-field Probe

Author(s)
Christopher L. Holloway, Joshua A. Gordon, Steven R. Jefferts, Thomas P. Heavner
We present a significantly new approach for an electric (E) field probe. The probe is based on the interaction of RF-fields with Rydberg atoms, where alkali

On the Unification of Access Control and Data Services

Author(s)
David F. Ferraiolo, Serban I. Gavrila, Wayne Jansen
A primary objective of enterprise computing (via a data center, cloud, etc.) is the controlled delivery of data services (DS). Typical DSs include applications

Precision limitations in coherent laser ranging due to speckle phase noise

Author(s)
Esther Baumann, Jean-Daniel Deschenes, Fabrizio R. Giorgetta, William C. Swann, Ian R. Coddington, Nathan R. Newbury
The ultimate precision of coherent laser three-dimensional mapping of a diffusely scattering surface will be determined by speckle noise. Speckle phase noise

Modeling of 2-bromotrifluoropropene flame inhibition

Author(s)
Donald R. Burgess Jr., Jeffrey A. Manion, Valeri I. Babushok, Gregory T. Linteris
We developed a new chemical mechanism for modeling flame inhibition by 2-bromotrifluoropene (2-BTP). The modeling results qualitatively predicted agent behavior
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