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Conferences

Calibration Techniques for Scanning Microwave Microscopy

July 1, 2012

Author(s)

Thomas M. Wallis, Atif A. Imtiaz, Alexandra Curtin, Pavel Kabos, H. P. Huber, Joseph J. Kopanski, F. Kienberger

Two techniques are described for calibrating a scanning microwave microscope (SMM). The first technique enables spatially-resolved absolute capacitance...

On the Molar Mass of Silicon for a New Avogadro Constant

July 1, 2012

Author(s)

Gregory C. Turk, Robert D. Vocke Jr., Savelas A. Rabb

Towards a fixed value of the Planck constant: reproducibility and an updated NIST-3 watt balance

July 1, 2012

Author(s)

Darine El Haddad, Stephan Schlamminger, David B. Newell, Ruimin Liu, Edwin R. Williams, Jon R. Pratt

The scientific community is presently engaged in a historic attempt to fix the value of the Planck constant h so that it might ultimately serve as a base...

The Planck constant, watt and vacuum balances, and an evolving Mise en pratique for the kilogram in North America

July 1, 2012

Author(s)

Jon R. Pratt, David B. Newell, Zeina J. Kubarych, Stephan Schlamminger, Darine El Haddad, Ruimin Liu, Edwin R. Williams, Dave Inglis, Barry M. Wood, Carlos Sanchez, Richard Green

We report preparations underway at the National Institute of Standards and Technology (NIST) in the United States and at the National Research Council (NRC) in...

Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor

July 1, 2012

Author(s)

Alessio Pollarolo, Tae H. Jeong, Samuel Benz, Horst Rogalla

In 2010 NIST measured the Boltzmann constant k by use of an electronic technique that measured the Johnson noise of a 100 Ohm resistor at the triple point of...

Differential Sampling Measurement of a 7 V rms Sine Wave and a Programmable Josephson Voltage Standard

July 1, 2012

Author(s)

Alain Rufenacht, Charles J. Burroughs, Samuel Benz, Paul Dresselhaus

A 10 V programmable Josephson voltage standard has enabled sine waves with rms voltages up to 7 V to be accurately measured with differential sampling methods...

Quantum Calibration System for AC Measurement Standards using Inductive Voltage Dividers

July 1, 2012

Author(s)

Thomas Hagen, Ilya F. Budovsky, Samuel Benz, Charles J. Burroughs

A pulse driven ac Josephson voltage standard (ACJVS) has been set up at the National Measurement Institute, Australia (NMIA) with the help of the National...

A Digital-to-Analog Converter with a Voltage Standard Reference

July 1, 2012

Author(s)

Alain Rufenacht, Charles J. Burroughs, Samuel Benz, Paul Dresselhaus

Commercially available 20-bit digital to analog converters (DACs) have the potential to impact the field of low frequency voltage metrology. We measured a...

Flat frequency response in the electronic measurement of the Boltzmann constant

July 1, 2012

Author(s)

Jifeng Qu, Samuel Benz, Yang Fu, Jianqiang Zhang, Horst Rogalla, Alessio Pollarolo

A new quantum voltage calibrated Johnson noise thermometer (JNT) was developed at NIM to demonstrate the electrical approach that determines the Boltzmann...

Maximum Life Span Strategy for Target Tracking in Mobile Sensor Networks

June 29, 2012

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Amir G. Aghdam, Walid Masoudimansour

In this paper, an energy-efficient technique is proposed for tracking a target in a field using a network of mobile sensors while maximizing the life span of...

Safe Control of Manufacturing Vehicles Research Towards Standard Test Methods

June 28, 2012

Author(s)

Roger V. Bostelman, William P. Shackleford, Geraldine S. Cheok, Kamel S. Saidi

The National Institute of Standards and Technology's Intelligent Systems Division has been researching several areas leading to safe control of manufacturing...

RESONANCE ENERGY TRANSFER AS A TOOL FOR PROBING INTERFACE FORMATION IN NANOCOMPOSITES

June 24, 2012

Author(s)

Mauro Zammarano, Edward D. McCarthy, Douglas M. Fox, Paul H. Maupin, Li Piin Sung, Yeon S. Kim

One of the most enduring problems in the evolution of science and technology using nanoscale materials is the characterization of their morphology in...

Solid-Phase Synthesis of Ammonium Ionenes

June 24, 2012

Author(s)

Matthew T. Hunley, Kathryn L. Beers

Ionenes are polyelectrolytes with the charge along the polymer backbone. These polymers possess a precisely-defined charge density, making them ideal as...

Synthesis and characterization of model crosslinked polyamide films for water purification

June 24, 2012

Author(s)

Peter M. Johnson, Edwin Chan, Jun Y. Chung, Junghyun Lee, Christopher Stafford

Reverse osmosis (RO) and nanofiltration (NF) membranes are comprised of a dense active layer supported by a porous support. Commercial active layer are highly...

TESTING LONG-WAVELENGTH ACOUSTIC FLOWMETER CONCEPTS FOR FLUE GAS FLOWS

June 22, 2012

Author(s)

Lee J. Gorny, Keith A. Gillis, Michael R. Moldover

As a part of NISTs program to standardize measurements of greenhouse gas emissions, we are developing a long-wavelength acoustic flowmeter (LWAF) for accurate...

Establishing Traceability of an Electronic Calibration Unit Using the NIST Microwave Uncertainty Framework

June 22, 2012

Author(s)

Jeffrey A. Jargon, Dylan F. Williams, Thomas M. Wallis, Denis X. LeGolvan, Paul D. Hale

We present a method for providing traceability to a commercial electronic calibration unit for vector network analyzers by characterizing its scattering...

Quantitative evaluation of digital image correlation as applied to large-scale gusset plate experiments

June 21, 2012

Author(s)

Mark A. Iadicola, Robert S. Zobel, Justin M. Ocel

As part of the National Cooperative Highway Research Project 12-84 "Guidelines for the Load and Resistance Factor Design and Rating of Gusset-Plate Connections...

Tools and Approaches for the Assessment of Nanomaterial Induced Oxidative DNA Damage

June 20, 2012

Author(s)

Elijah J. Petersen, Bryce J. Marquis, Pawel Jaruga, M Miral Dizdar, Bryant C. Nelson

Hyphenated mass spectrometry techniques have been employed as one of the primary analytical tools for investigating the effects of ionizing radiation, chemical...

Tests of the Extended Lee Model Using Three Different Turbine Meters

June 20, 2012

Author(s)

Jodie G. Pope, John D. Wright, Sherry D. Sheckels

We report additional tests of our extended Lee model for calibrating turbine meters. The model accounts for 1) Reynolds number (Re) dependent drag and lift, 2...

Improved Nozzle Manifold for Gas Flow Calibrations

June 20, 2012

Author(s)

Aaron N. Johnson, Chunhui Li, John D. Wright, Gina M. Kline, Christopher J. Crowley

We developed a new nozzle manifold that reduced the uncertainty of flow calibrations from 0.09 % to as low as 0.074 % for flows of air up to 0.84 kg/s (43 000 L...

Uptake and Elimination Behaviors of Polyethyleneimine (PEI)-Coated Multi-Walled Carbon Nanotubes by Eisenia foetida and Daphnia magna

June 20, 2012

Author(s)

Elijah J. Petersen

Determining the effects of various surface coatings on carbon nanotubes (CNTs) is critical given the numerous expected applications of CNTs and their inevitable...

USARSim/ROS: A Combined Framework for Robotic Control and Simulation

June 20, 2012

Author(s)

Stephen B. Balakirsky, Zeid Kootbally

The Robot Operating System (ROS) has been steadily gaining popularity among robotics researchers as an open source framework for robot control. The Unified...

Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty

June 20, 2012

Author(s)

Iosif I. Shinder, Michael R. Moldover, J. M. Hall, Mike Duncan, Joe Keck

The National Institute of Standards and Technology (NIST) and the Oak Ridge National Laboratory (ORNL) are improving their airspeed calibration services. Both...

Large Stroke Electrostatic Comb-Drive Actuators Based on a Novel Flexure Mechanism

June 20, 2012

Author(s)

Mohammad Olfatnia, Siddharth Sood, Jason J. Gorman, Shorya Awtar

This paper reports in-plane electrostatic comb-drive actuators with stroke as large as 245 µm, achieved by employing a novel Clamped Paired Double Parallelogram...

Verification and Validation Process of a Fire Model

June 18, 2012

Author(s)

Kevin B. McGrattan, Simo A. Hostikka

Fire simulation tools are used frequently in the fire safety assessment of nuclear and other industrial installations. They are also used in the context of...

A THERMODYNAMIC ANALYSIS OF REFRIGERANTS. I. THERMODYNAMIC LIMITS OF THE VAPOR COMPRESSION CYCLE

June 18, 2012

Author(s)

Piotr Domanski, J S. Brown, Jae H. Heo, Janusz Wojtusiak, Mark McLinden

This paper explores the thermodynamic performance limits of the vapor compression cycle. In particular, we apply evolutionary algorithms to explore the...

Fabrication of Microelectrodes on Polyester Membranes for Dielectrophoretic Cell Capture

June 18, 2012

Author(s)

Conni Hanke, Petra S. Dittrich, Darwin Reyes-Hernandez

We present a new system for cell capturing on permeable polyester (PET) membranes using dielectrophoretic forces. For the first time gold microelectrodes were...

A New Convexity Measurement for 3D Meshes

June 16, 2012

Author(s)

Afzal A. Godil, Zhouhui Lian

This paper presents a novel convexity measurement for 3D meshes. The new convexity measure is calculated by minimizing the ratio of the summed area of valid...

A COMPUTER AIDED SYSTEM FOR SUSTAINABILITY ANALYSIS FOR DIE-CASTING PROCESS

June 15, 2012

Author(s)

Jatinder Madan, Mahesh Mani, Princepal Singh, Amrik Singh

Currently available sustainability analysis systems for the die-casting process primarily depend on the material properties and do not account for process...

Technology Readiness Levels for Randomized Bin Picking

June 13, 2012

Author(s)

Jeremy A. Marvel, Roger D. Eastman, Geraldine S. Cheok, Kamel S. Saidi, Tsai Hong Hong, Elena R. Messina

A proposal for the utilization of Technology Readiness Levels to the application of unstructured bin picking is discussed. A special session was held during the...

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