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Conferences

Assessing the use of an infrared spectrum hyperpixel array imager to measure temperature during additive and subtractive manufacturing

May 11, 2016

Author(s)

Eric P. Whitenton, Brandon M. Lane, Jarred C. Heigel, Shawn P. Moylan

Accurate non-contact temperature measurement is important to optimize manufacturing processes. This applies to both additive (3D printing) and subtractive...

Development of in situ Electrochemical Small-Angle Neutron Scattering (eSANS) for Simultaneous Structure and Redox Characterization of Nanoparticles

May 10, 2016

Author(s)

Vivek M. Prabhu, Vytautas Reipa, Adam Rondinone, Peter V. Bonnesen, Eric Formo

An in situ electrochemical small-angle neutron scattering (eSANS) method was developed to measure simultaneously the redox properties and size, shape and...

Probing Charge Transfer and Hot Carrier Dynamics in Organic Solar Cells with Terahertz Spectroscopy

May 10, 2016

Author(s)

Paul D. Cunningham, Paul A. Lane, Joseph S. Melinger, Okan Esenturk, Edwin J. Heilweil

Time-resolved terahertz spectroscopy (TRTS) was used to explore charge generation, transfer, and the role of hot carriers in organic solar cell photovoltaic...

Comparison of T1 measurement using ISMRM/NIST system phantom

May 9, 2016

Author(s)

Kathryn E. Keenan, Karl F. Stupic, Michael A. Boss, Stephen E. Russek, Thomas L. Chenevert, Pottumarthi V. Prasad, Wilburn E. Reddick, Jie Zheng, Peng Hu, Edward F. Jackson

We used the ISMRM/NIST system phantom to assess variations of T1 measurements across MRI systems at 1.5 T and 3 T, to determine the repeatability and...

Power Splitter Thermal Noise Correlations in Cross-spectrum Noise Measurements

May 9, 2016

Author(s)

Archita Hati, Craig W. Nelson, David A. Howe

We discuss collapse of the cross-spectrum phase noise measurement of thermally-limited oscillator due to anti-correlated thermal noise of the Wilkinson power...

Automating Robot Planning using Product and Manufacturing Information

May 9, 2016

Author(s)

Frederick M. Proctor, Gijs van der Hoorn, Robert R. Lipman

Advances in sensing, modeling, and control have made it possible to increase the accuracy of robots, and enable them to perform in dynamic environments. Often...

Measurement of AM-to-PM Conversion in a Quartz-MEMS Resonator

May 9, 2016

Author(s)

Craig W. Nelson, Archita Hati, David A. Howe

This work investigates the new aspects of the non-linear response in a quartz-MEMS resonator at 635 MHz. We characterize its major cause of AM-to-PM conversion...

Practical Evaluation of a 50 km Fiber Link Utilizing a Commercial Modem

May 9, 2016

Author(s)

Corey A. Barnes, Archita Hati, Craig W. Nelson, David A. Howe

We evaluate the stability of two-way time and frequency transfer over a 50 km fiber optic link established using a commercially available fiber optic modem. For...

Long-Term GPS Carrier-Phase Time Transfer Noise: A Study based on Seven GPS Receivers at NIST

May 9, 2016

Author(s)

Jian Yao, Judah Levine

This paper reports a preliminary study of the long-term GPS carrier-phase time transfer noise, based on seven NIST GPS receivers. It shows that the carrier...

DELAY MEASUREMENT OF 1PPS SIGNALS IN TIMING SYSTEMS

May 9, 2016

Author(s)

Stefania Romisch, Daniele Rovera, Marco Siccardi

Abstract The uncertainty of time measurements in timing systems is not only a function of the quality of the instruments and system components (time interval...

Frequency shift mitigation in a cold-atom CPT clock

May 8, 2016

Author(s)

Xiaochi Liu, John Kitching, Elizabeth Donley, Eugene N. Ivanov

An upgrade in the laser interrogation system for our cold-atom clock based on coherent population trapping has resulted in a reduced light shift. The new...

A Simulation Framework for Industrial Wireless Networks and Process Control Systems

May 6, 2016

Author(s)

Yongkang Liu, Richard Candell, Nader Moayeri, Kang B. Lee

Factory and process automation systems are increasingly employing information and communications technologies to facilitate data sharing and analysis in...

Feasibility Investigation of Application of MPACT to Core Design Studies of NBSR-2, a Heavy Water-Reflected, Heterogeneous LEU Fuel Research Reactor

May 1, 2016

Author(s)

Bryan Daniel Eyers, Zeyun NMN Wu, Brendan Kochunas

Engineers at NIST would like to use the VERA software suite developed by CASL to study a new 20 MW research reactor design called NBSR-2, which uses...

Core Design Studies on a Low-Enriched Uranium Reactor for Cold Neutron Sources at NIST

May 1, 2016

Author(s)

Zeyun NMN Wu, Robert E. Williams

A LEU-fueled research reactor for cold neutron sources is currently being studied at NIST. The new design is targeting at least two high quality cold neutron...

A ROUND ROBIN EXPERIMENT TO SUPPORT BOND VOID MEASUREMENT STANDARDS

May 1, 2016

Author(s)

Richard A. Allen, David T. Read, Victor H. Vartanian, Winthrop A. Baylies, William Kerr, Mark Plemmons, Kevin T. Turner

A round robin experiment to compare the sensitivities of various metrology tools to small voids between bonded wafers such as are used in three-dimensional...

Hardware Security Thorough Supply Chain Assurance

April 28, 2016

Author(s)

Yaw S. Obeng, David A. Brown, Colm Nolan

This paper examines the current issues pertaining to the hardware security and how they could affect the overall security of applications such as the internet...

Status of the Liquid Deuterium Cold Neutron Source for the NIST Research Reactor

April 28, 2016

Author(s)

Robert E. Williams, Michael Middleton, Paul Kopetka, J. Michael Rowe, Paul C. Brand

The NBSR is a 20 MW research reactor operated by the NIST Center for Neutron Researcher (NCNR) as a neutron source providing beams of thermal and cold neutrons...

Performance Evaluation of Secure Industrial Control System Design: A Railway Control System Case Study

April 28, 2016

Author(s)

Xenofon Koutsoukos, Himanshu Neema, Sajal Bhatia, Janos Sztipanovits, Keith A. Stouffer, CheeYee Tang

Industrial Control Systems (ICS) are composed of sensors, actuators, control processing units, and communication devices all interconnected to provide...

Burning Velocities of Marginally Flammable Refrigerant-Air Mixtures

April 21, 2016

Author(s)

John Pagliaro, Gregory T. Linteris

Refrigerant working fluids have been predicted to be large contributors to the increase in radiative forcing of the earth. Consequently, existing compounds will...

Mobile Robot and Mobile Manipulator Research Towards ASTM F45 Standards Developments

April 20, 2016

Author(s)

Roger V. Bostelman, Tsai H. Hong

Performance standards for industrial mobile robots and mobile manipulators (robot arms onboard mobile robots) have only recently begun development. Low cost and...

Formaldehyde Concentrations in a Net-Zero Energy House: Real-time Monitoring and Simulation

April 19, 2016

Author(s)

Dustin Poppendieck, Shahana S. Khurshid, William Stuart Dols, Lisa Ng, Brian Polidoro, Steven Emmerich

Measured real-time formaldehyde concentrations in a net-zero energy house were compared to simulated concentrations from a recently-developed, coupled building...

Measuring Flame Retardant Emissions from Spray Polyurethane Foam in a Home

April 19, 2016

Author(s)

Dustin Poppendieck, Angelica Connor

The use of spray polyurethane foam (SPF) insulation in the United States is increasing. The primary flame retardant used in SPF, Tris (1-chloro-2-propyl)...

Measuring and Characterizing Tris (2-chloro-1-methylethyl) Phosphate Emission from Open Cell Spray Polyurethane Foam

April 19, 2016

Author(s)

Mengyan Gong, Dustin Poppendieck

Understanding emission of Tris(2-chloro-1-methylethyl) Phosphate (TCPP) from Spray Polyurethane Foam (SPF) will contribute to the assessment of exposure to TCPP...

Characterizing Uncertainty of a Formaldehyde Reference Standard

April 18, 2016

Author(s)

Dustin Poppendieck

High performance buildings need to be energy efficient and provide adequate ventilation for indoor air quality, which can be made easier with low emitting...

Device-Level Jitter as a Probe of Ultrafast Traps in High-k MOSFETs

April 16, 2016

Author(s)

Dmitry Veksler, Jason Campbell, Kin Cheung, J. Zhong, H. Zhu, C. Zhao

A methodology for evaluation of ultra-fast interfacial traps, using jitter measurements as a probe, is developed. This methodology is applied to study the...

New Component-Based Model for Single-Plate Shear Connections with Pre-tension

April 15, 2016

Author(s)

Jonathan M. Weigand

Although simple shear connections are typically idealized as perfectly pinned, the actual resistance of the gravity framing system to flexural and axial loads...

Catalyzing the Internet of Things and Smart Cities: Global City Teams Challenge.

April 11, 2016

Author(s)

Sokwoo Rhee

Many smart city and Internet of Things (IoT) solutions are suffering from fragmentation and lack of economies of scale. To address this issue, the National...

Kinetics of Photodegradation and Nanoparticle Surface Accumulation of a Nanosilica/Epoxy Coating Exposed to UV Light

April 11, 2016

Author(s)

Li Piin Sung, Justin Gorham, Deborah Jacobs, Savelas A. Rabb, Lee L. Yu, Tinh Nguyen

Temperature effect on the kinetics of photodegradation, surface accumulation of nanoparticles, and nanoparticle release in an epoxy nanocoating exposed to...

Multi-purpose Configurable Range for Antenna Testing Up To 220 GHz*

April 9, 2016

Author(s)

David R. Novotny, Michael H. Francis, Ronald C. Wittmann, Josh Gordon, Jeffrey R. Guerrieri, Alexandra Curtin

NIST has developed a multi-purpose test range for performing several types of antenna testing including spherical, cylindrical and planar near-field scanning as...

Comparison of Consensus Value Methods Used to Compile On-Axis Gain Measurement Results

April 9, 2016

Author(s)

Jeffrey R. Guerrieri

This paper compares methods for computing consensus values of data sets. Three methods are used to analyze multiple data sets. The data sets are, on-axis gain...

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