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Search Publications

NIST Authors in Bold

Displaying 7526 - 7550 of 13218

Thermal Noise-Limited Laser Stabilization to an 8 mL Volume Fabry-Perot Reference Cavity with Microfabricated Mirrors

March 29, 2022
Author(s)
Charles McLemore, Naijun Jin, Megan Kelleher, James Hendrie, David Mason, Yizhi Luo, Dahyeon Lee, Peter Rakich, Scott Diddams, Franklyn Quinlan
Lasers stabilized to vacuum-gap Fabry-Perot optical reference cavities display extraordinarily low noise and high stability, with linewidths much less than 1 Hz. These lasers can expand into new applications and ubiquitous use with the development of

AbsorbanceQ: An App for Generating Absorbance Images from Brightfield Images

January 4, 2022
Author(s)
Stephen Zimmerman, Carl Simon Jr., Greta Babakhanova
The AbsorbanceQ app converts brightfield microscope images into absorbance images that can be analyzed and compared across different operators, microscopes and time. Absorbance-based measurements are comparable, which is useful when the aim is to

NEMI Tin Whisker Test Method Standards

October 12, 2021
Author(s)
I Boguslavsky, P Bush, E Kam-Lum, M Kwoka, J McCullen, K Spalding, K Vo, Maureen E. Williams
… circuiting or break off and interfere with other devices in an application. Currently, there is not an … formed under the sponsorship of the National Electronics Manufacturing Initiative (NEMI) to evaluate different …

Quantifying Machining Process Inventories In Detailed Design

August 24, 2021
Author(s)
William Z. Bernstein, Till Boettjer, Deverajan Ramanujan
… process inventories based on commonly used techniques in various stages of the detailed design process. We investigate variabilities in process inventories between these techniques and their relation to manufacturing process parameters, which are required for …

Reversed Ethane/Ethylene Adsorption in Metal-Organic Frameworks via Introduction of Oxygen

February 1, 2020
Author(s)
Ling Yang, Wei Zhou, Hao Li, Ali Alsalme, Litao Jia, Jinping Li, Libo Li, Banglin Chen
… from ethylene is a very important but challenging process in the petrochemical industry. Finding an alternative method … herein report the "reversed" C 2 H ^/C 2 H 4 adsorption" in a metal-organic framework Cr-BTC via the introduction of … C 2 H 6 /C 2 H 4 mixtures to produce 99.99% pure C 2 H 4 in a single separation operation. …

Evaluating changes to Ralstonia pickettii in high-purity water to guide selection of potential calibration materials for online water bioburden analyzers

July 25, 2019
Author(s)
Kurt D. Benkstein, Sandra M. Da Silva, Nancy J. Lin, Dean C. Ripple
… (OWBAs) can provide real-time feedback on viable bacteria in high-purity water (HPW) systems for pharmaceutical … are needed that mimic the characteristics of bacteria in HPW. To guide selection of potential standards, e.g., … spectral features. The cell characteristics are discussed in comparison with a set of fluorescent microspheres, …

Calibration of mobile manipulators using 2D positional features

April 24, 2018
Author(s)
Mili Shah, Roger V. Bostelman, Steven Legowik, Tsai H. Hong
… being attached to Automatic Ground Vehicles (AGVs) to aid in the effi-ciency of assembly for manufacturing systems. However, calibrating these mobile … then applied to simulated data as well as data collected in a laboratory setting and compared to other methods. …

The Effects of Nanostructure on the Stability of Nanocomposite Building Materials

February 19, 2017
Author(s)
Marc R. Nyden, Samuel Manzello, Richard H. Harris Jr.
… products. Unfortunately, the use of these materials in buildings and vehicles is limited because of their … properties when they are homogeneously dispersed in polymers. Unfortunately, nanoadditives, such as carbon … and the lifecycle performance of polymer nanocomposites. In this paper, we present an overview of the progress we have …

Nanomanufacturing Concerns about Measurements Made in the SEM Part V. Dealing with Noise

September 17, 2016
Author(s)
Michael T. Postek, Andras Vladar
… Scanning electron microscopes (SEM) are used extensively in research and advanced manufacturing for materials characterization, metrology and … detail and information that can be acquired in any SEM micrograph, or measurement made from those data. … Nanomanufacturing Concerns about Measurements Made in the SEM Part V. Dealing with Noise …

Towards Estimating the Uncertainty Associated with 3D Geometry Reconstructions from Medical Image Data

May 23, 2016
Author(s)
Zachary H. Levine, Karim O. Genc, Stephen M. Luke, Todd Pietiela, Ross T. Cotton, Benjamin Ache, Phillipe G. Young, Marc Horner, Kevin C. Townsand
… for visualization, physics-based simulation or additive manufacturing, is becoming more common within R&D labs in academia, government and commercial industry. Computed … phantom, or “NIST phantom”, to help control for variations in scanner settings, noise or artifacts. Ideally, the …

MEMS optomechanical accelerometry standards

July 8, 2015
Author(s)
Felipe Guzman, Yiliang Bao, Jason J. Gorman, John R. Lawall, Jacob M. Taylor, Thomas W. LeBrun
… of the oscillator’s mass to laser frequency changes in a Fabry-Pérot resonator. We are building on the advance manufacturing techniques from the semiconductor industry to … mechanical oscillators, will be bonded together, resulting in compact and portable primary acceleration standards that …

Free-space reconstruction of the electrical properties of carbon nanotube based composites in the Q- band range

March 16, 2015
Author(s)
Ahmed M. Hassan, Jan Obrzut, Edward Garboczi
… method measures the dielectric properties of the sample in the Q-band, corresponding to a frequency range of 30 GHz … depth. This method also involves an error correction model in order to accurately reconstruct the constitutive … for research, development, and for quality control in the manufacturing environment. …

Long-Term Stability of UHMWPE Fibers

February 18, 2015
Author(s)
Amanda L. Forster, Aaron M. Forster, Joannie W. Chin, Chiao-Chi Lin, Sylvain H. Petit, Kai-Li Kang, Nicholas G. Paulter Jr., Michael A. Riley, Kirk D. Rice
… that allows the polymer to exhibit a superior strength in the axial direction of the fi ber. Body armor … have exploited the inherent strength of these materials, in addition to novel armor design, to develop body armor that … fibers, and impact their ability to protect the wearer. In this work, the long term stability of UHMWPE fibers, which …

VOLUMETRIC PERFORMANCE EVALUATION OF A LASER SCANNER

October 20, 2013
Author(s)
Balasubramanian Muralikrishnan, Massimiliano M. Ferrucci, Daniel S. Sawyer, Grant Gerner, Vincent D. Lee, Christopher J. Blackburn, Steven D. Phillips, Peter Petrov, Yuri Yakovlev, Andrey Astrelin, Spike Milligan, John Palmateer
… There are several sources of error in a laser scanner measurement. The optical and material … color, reflectivity, and orientation of the target in space, environmental effects, etc., all contribute to measurement errors. In this abstract, we address a particular source of …

A Survey of Standards for Product Lifecycle Management of Structural Composites

August 7, 2013
Author(s)
Christopher U. Brown, Joshua Lubell, Robert R. Lipman, Gaurav Ameta
… direction) to weight ratio. Composites are widely used in the automotive, sports and aerospace industries. Designing … component requires highly concurrent processes including manufacturing and assembly considerations. We discuss … Conferences (IDETC) and Computers and Information in Engineering Conference (CIE) …

Ground Truth Systems for Object Recognition and Tracking

March 29, 2013
Author(s)
Afzal A. Godil, Roger D. Eastman, Tsai H. Hong
… In this report we discuss different types of ground-truth … for evaluation of object recognition and tracking systems in industrial manufacturing environments. We discuss three main ways for …

Alternate Smoldering Ignition Sources: A Literature Review with Analysis

October 1, 2011
Author(s)
Richard G. Gann, Amanda P. Robbins
… specify a “standard” cigarette as the ignition source in smoldering resistance performance tests. With the prevalence of reduced ignition propensity cigarettes in the marketplace, the specific conventional cigarette that has been widely used in testing for ignition resistance is no longer in …
Displaying 7526 - 7550 of 13218
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