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Conferences

Near-field microwave microscopy of one-dimensional nanostructures

May 23, 2016

Author(s)

Samuel Berweger, Paul T. Blanchard, Rebecca C. Quardokus, Frank W. DelRio, Thomas Mitchell (Mitch) Wallis, Pavel Kabos, Sergiy Krylyuk, Albert Davydov

With the ability to measure sample conductivity with nanometer spatial resolution, scanning microwave microscopy (SMM) is a powerful tool to study nanoscale...

Response of water systems under extreme events: a comprehensive approach to modeling water system resilience

May 22, 2016

Author(s)

Hana T. Chmielewski, Roberto Guidotti, Therese P. McAllister, Paolo Gardoni

Water systems (e.g. potable water, wastewater, and storm water systems) are regarded as "lifeline" infrastructure. They play a key role in supporting the...

Optofluidic Temperature and Pressure Measurements with Fiber Bragg Gratings Embedded in Microfluidic Devices

May 21, 2016

Author(s)

Gregory A. Cooksey, Zeeshan Ahmed

The integration of photonic sensors into microfluidic devices provides opportunities for dynamic measurement of chemical and physical properties of fluids in...

Towards Annotations and Product Definitions for Additive Manufacturing

May 20, 2016

Author(s)

Paul W. Witherell, Gaurav Ameta, Jennifer Herron

As AM is viewed more and more as a production-capable technology, the costs of complexity have become increasingly apparent in the form of information...

Multiple Sensor Detection of Process Phenomena in Laser Powder Bed Fusion

May 20, 2016

Author(s)

Brandon M. Lane, Eric P. Whitenton, Shawn P. Moylan

Laser powder bed fusion (LPBF) is an additive manufacturing (AM) process in which a high power laser melts metal powder layers into complex, three-dimensional...

Theory and algorithm for planar datum establishment using constrained total least-squares

May 19, 2016

Author(s)

Craig M. Shakarji, Vijay Srinivasan

First, we present an efficient algorithm for establishing planar datums that is based on a constrained minimization search based on the L2 norm after forming a...

Inductive Micro-Flash Desorption for a Molecular-Level Understanding of Fuel Lubricity

May 19, 2016

Author(s)

Kimberly N. Urness, Thomas J. Bruno

Liquid fuels aboard high-performance aircraft currently fulfill the role of both the propellant and the heat sink for regenerative cooling. The fuels themselves...

Hardware Security to Mitigate Threats to Networked More-Than-Moore Sensors

May 18, 2016

Author(s)

Yaw S. Obeng

Networked sensors (a. k. a., Internet of Things (IoT)) represents a new era in the evolution of telecommunications made possible by the reduced cost of...

The New SURF Beamline 3

May 18, 2016

Author(s)

Robert E. Vest

A new beamline is being commissioned at the Synchrotron Ultraviolet Radiation Facility (SURF III) on the Gaithersburg, MD campus of the National Institute of...

Modeling of Suspension Flow in a Pipe Geometry and Rheometers

May 18, 2016

Author(s)

Nicos Martys, Chiara F. Ferraris, William L. George

Abstract Measurement and prediction of the flow of suspensions like cement based materials represents a significant challenge for both the experimentalist and...

Testing of Cementitious Materials Using a Dynamic MEMS Micro Rheometer

May 17, 2016

Author(s)

Yong Sik Kim, Nicholas G. Dagalakis, Chiara C. Ferraris, Nicos Martys

Incompatibility of cementitious materials with admixtures often requires time consuming testing. Usually, several mixtures need to be prepared either using...

Acoustic and Electromagnetic Reverberation Chambers: Similarities and Differences

May 16, 2016

Author(s)

Perry F. Wilson

Acoustic reverberation chambers predate electromagnetic (EM) reverberation chambers. EM reverberation chamber researchers occasionally make reference to...

EXPERIMENTAL STUDY ON THE VULNERABILITIES OF DECKING ASSEMBLIES ATTACKED BY FIREBRAND SHOWERS

May 16, 2016

Author(s)

Samuel Manzello, Sayaka Suzuki, Ichiro Hagiwara

In WUI fires, decking assemblies have been observed to be an ignition vulnerability based on post-fire damage surveys conducted by NIST and elsewhere. Recently...

Antenna Metrology 100-500 GHz: A New Approach

May 16, 2016

Author(s)

Perry F. Wilson, Joshua A. Gordon, David R. Novotny, Jeffrey R. Guerrieri

A typical near-field scanning range for antenna measurements is based on simple translation stages (planar) or stacked rotators (spherical), or both...

INVESTIGATING TILE ROOFING ASSEMBLY PERFORMANCE EXPOSED TO CONTINUOUS FIREBRAND EXPOSURE

May 16, 2016

Author(s)

Samuel Manzello, Sayaka Suzuki

Wildland-Urban Interface (WUI) fires have become a problem of great concern worldwide. Japan does not have a specific problem of fires spreading from the...

Characterization of Monoclonal Antibody Drug Products Using High Resolution NMR

May 15, 2016

Author(s)

Luke Arbogast, Robert Brinson, John Marino

Time-domain analysis of resonant acoustic nonlinearity arising from cracks in multilayer ceramic capacitors

May 13, 2016

Author(s)

Ward L. Johnson, Sudook A. Kim, Grady S. White, Jaemi Herzberger, Kirsten L. Peterson, Paul R. Heyliger

Acoustic nonlinearity of cracked and uncracked multilayer ceramic capacitors (MLCCs) was characterized through time-domain analysis of resonant waveforms...

Electrical Units in the New SI: Saying Goodbye to the 1990 Values

May 12, 2016

Author(s)

Nick Fletcher, Gert Rietveld, James K. Olthoff, Ilya F. Budovsky

The proposed redefinition of several SI base units is a topic that has been on the metrology agenda for the last decade. The general principles and the...

Combinatorial Coverage Analysis of Subsets of the TLS Cipher Suite Registry

May 11, 2016

Author(s)

Dimitris Simos, Kristoffer Kleine, D. Richard Kuhn, Raghu N. Kacker

We present a combinatorial coverage measurement for (subsets) of the TLS cipher suite registries by analyzing the specified ciphers of IANA, ENISA, BSI, Mozilla...

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...

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...

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...

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...

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...

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...

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...

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...

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