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Journals

Number Fluctuations and Energy Dissipation in Sodium Spinor Condensates

June 5, 2009

Author(s)

Yingmei Liu, Eduardo N. Gomez, Stephen E. Maxwell, Lincoln D. Turner, Eite Tiesinga, Paul D. Lett

We characterize fluctuations in atom number and spin populations in F = 1 sodium spinor condensates. The time evolution of the population fluctuations shows a...

Experimental Compressibilities and Structure Factors of Poly(ethylene glycol)Molecular Masses 2000 to 8000 in Aqueous-Solution

June 5, 2009

Author(s)

Kenneth A. Rubinson

Small-Angle Neutron Scattering (SANS) is a powerful nondestructive technique that can measure simultaneously macroscopic compressibilities of solutions, overall...

Molar Heat Capacity at Constant Volume for Isobutane at Temperatures from (114 to 345) K and at Pressures to 35 MPa

June 4, 2009

Author(s)

Richard A. Perkins, Joe W. Magee

Molar heat capacities at constant volume (C v) were measured with an adiabatic calorimeter for pure isobutane. The high purity of the samples was verified by...

High-brightness, low-noise, all-fiber photon pair source

June 4, 2009

Author(s)

Shellee D. Dyer, Burm Baek, Sae Woo Nam

We demonstrate an all-fiber photon pair source for the critical telecom C-band. We achieve high pair generation rates in excess of 10 MHz while maintaining...

Entangled Mechanical Oscillators

June 4, 2009

Author(s)

John D. Jost, Jonathan Home, Jason Amini, David Hanneke, R. Ozeri, Christopher Langer, John J. Bollinger, Dietrich G. Leibfried, David J. Wineland

Quantum mechanics describes the state and evolution of isolated systems, where entangled and superposition states can be created. Its application to large...

Flexible Solution-Processed Memristors

June 3, 2009

Author(s)

Nadine E. Gergel-Hackett, Behrang H. Hamadani, B Dunlap, John S. Suehle, Curt A. Richter, Christina A. Hacker, David J. Gundlach

We have fabricated physically flexible nonvolatile memory devices using inexpensive, room-temperature, solution processing. The behavior of these devices is...

Nonlinear Behavior of Electronic Components Characterized with Precision Multitones from a Josephson Arbitrary Waveform Synthesizer

June 3, 2009

Author(s)

Samuel P. Benz, Ryan C. Toonen

We have extended the application of quantum-based electrical standards from single frequency calibrations to multi-tone tests that can be used to characterize...

Tapered Transmission Lines with Dissipative Junctions

June 3, 2009

Author(s)

Paul D. Dresselhaus, Mike Elsbury, Samuel P. Benz

NIST is optimizing the design of a 10 V programmable Josephson voltage standard so that it uses less microwave power by use of fewer parallel-biased arrays with...

Molar Mass and Related Quantities in the New SI

June 3, 2009

Author(s)

Barry N. Taylor

This Letter addresses the calculation of molar mass and related quantities in the New SI currently under discussion by the International Committee for Weights...

Measurement of the Microwave Nonlinear Response of Combined Ferroelectric-Superconductor Transmission Lines

June 3, 2009

Author(s)

James C. Booth, Nathan D. Orloff, Jordi Mateu

We have fabricated nonlinear transmission lines and resonators that incorporate both distributed nonlinear capacitance and distributed nonlinear inductance in...

1V and 10V SNS Programmable Voltage Standards for 70 GHz

June 3, 2009

Author(s)

Franz Mueller, Ralf Behr, T. Weimann, Luis Palafox, David I. Olaya, Paul Dresselhaus, Samuel Benz

Programmable Josephson voltage standards (PJVSs) in combination with fast switchable DC current sources have opened up new applications in the field of low...

Microwave Packaging for Voltage Standard Applications

June 3, 2009

Author(s)

Mike Elsbury, Charles J. Burroughs, Paul Dresselhaus, Zoya Popovic, Samuel Benz

Improvements to the packaging of Josephson Volt- age Standard (JVS) circuits have increased operating margins, reliability, and longevity of these systems. By...

Amorphous Nb-Si Barrier Junctions for Voltage Standard and Digital Applications

June 3, 2009

Author(s)

David I. Olaya, Paul Dresselhaus, Samuel Benz, Jon E. Bjarnason, Erich N. Grossman

Amorphous Nb-Si has been previously demonstrated as a Josephson junction barrier material for Nb-based superconducting voltage standard circuits, including both...

Supercontinuum Sources for Metrology

June 2, 2009

Author(s)

John T. Woodward IV, Allan W. Smith, Colleen A. Jenkins, Chungsan Lin, Steven W. Brown, Keith R. Lykke

Supercontinuum (SC) sources are novel laser-based sources that generate a broad, white-light continuum in single mode photonic crystal fibers. Currently, up to...

Radiometer standard for absolute responsivity calibrations from 950 nm to 1650 nm with 0.05% (k = 2) uncertainty

June 2, 2009

Author(s)

George P. Eppeldauer, Howard W. Yoon, Yuqin Zong, Thomas C. Larason, Allan W. Smith, M. Racz

A sphere-input transfer-standard detector has been developed to calibrate detectors and radiometers for absolute spectral power, irradiance, and radiance...

Extension of the NIST spectral responsivity scale to the infrared using improved-NEP pyroelectric detectors

June 2, 2009

Author(s)

George P. Eppeldauer, Jinan Zeng, Howard W. Yoon, Boris Wilthan, Thomas C. Larason, Leonard M. Hanssen

Routine NIST spectral responsivity calibrations are needed for the infrared range. Low NEP pyroelectric radiometers have been developed for traditional...

Measurement of the ultraviolet-induced fluorescence yield from integrating spheres

June 2, 2009

Author(s)

Ping-Shine Shaw, Uwe Arp, Keith R. Lykke

We report theory and measurements of a simple and absolute technique for the determination of the total emitted spectral fluorescence yield inside an...

Absolute Flux Calibration of Stars; Calibration of the Reference Telescope

June 2, 2009

Author(s)

Allan W. Smith, John T. Woodward IV, Colleen A. Jenkins, Steven W. Brown, Keith R. Lykke

Absolute stellar photometry is based on 1970s terrestrial measurements of the star Vega with instruments calibrated using the Planckian radiance from a Cu fixed...

Determination of the Electron Escape Depth for NEXAFS Spectroscopy

June 2, 2009

Author(s)

Daniel A. Fischer, K E. Sohn, M D. Dimitriou, Jan Genzer, C Hawker, E. J. Kramer

Depth profiling using near-edge X-ray absorption fine structure (NEXAFS) spectroscopy was used to determine the carbon atom density as a function of depth by...

Asphaltene Adsorption onto Self-Assembled Monolayers of Mixed Aromatic and Aliphatic Trichlorosilanes

June 2, 2009

Author(s)

Daniel A. Fischer, Saloman Turgman-Cohen, Mathew Smith, P K. Kilpatrick, Jan Genzer

The adsorption of asphaltenes onto flat solid surfaces modified with mixed self-assembled monolayers (SAMs) of aliphatic and aromatic trichlorosilanes with...

CCPR-S1 Supplementary Comparison for Spectral Radiance in the range of 220 nm to 2500 nm

June 2, 2009

Author(s)

Boris Khlevnoy, Victor Sapritsky, Bernard Rougie, Charles E. Gibson, Howard Yoon, Arnold A. Gaertner, Dieter Taubert, Juergen Hartmann

In 1997, the Consultative Committee for Photometry and Radiometry (CCPR) initiated a supplementary comparison of spectral radiance in the wavelength range from...

Rectangular Distribution Whose Width is Not Exactly Known: Isocurvilinear Trapezoidal Distribution

June 1, 2009

Author(s)

Raghu N. Kacker, James F. Lawrence

After the Gaussian distribution, the probability distribution most commonly used in evaluating uncertainty in measurement is the rectangular distribution. When...

Myocardial Calcification in Captive Grouper Epinephelus Aeneus

June 1, 2009

Author(s)

Naomi Eidelman, A Colorni, Jirun Sun, M.C. Fishbein, A Diamant

A case of myocardial calcification is described in the Mediterranean white grouper, Epinephelus aeneus, cultured as broodstock in Eilat (Israel, Red Sea). Large...

Time-of-flight mass spectrometry with latching Nb meander detectors

June 1, 2009

Author(s)

Brian Estey, James A. Beall, Gene C. Hilton, Kent D. Irwin, Daniel R. Schmidt, Joel N. Ullom, Robert E. Schwall

Mass Spectrometry is widely used for protein characterization, structural virology, drug discovery, and clinical chemistry. However the detection efficiency of...

Design and Performance of the New NIST Hybrid Humidity Generator

June 1, 2009

Author(s)

Christopher W. Meyer, W Wyatt Miller, Dean C. Ripple, Gregory E. Scace

A new humidity generator has been constructed at the National Institute of Standards and Technology and is now fully operational. The NIST Hybrid Humidity...

Rapid and precise absolute distance measurements at long range

June 1, 2009

Author(s)

Ian R. Coddington, William C. Swann, Ljerka Nenadovic, Nathan R. Newbury

The ability to determine absolute distance to an object is one of the most basic measurements of remote sensing. High precision ranging has important...

Effect of Dissolved Nitrogen Gas on the Density of Di-2-Ethylhexyl Sebacate: Working Fluid of the NIST Oil Ultrasonic Interferometer Manometer Pressure Standard

June 1, 2009

Author(s)

Jay H. Hendricks, Jacob R. Ricker, Justin H. Chow, Douglas A. Olson

The National Institute of Standards and Technology (NIST) Low Pressure Manometry Laboratory maintains national pressure standards ranging from 1 mPa to 360 kPa...

Fuel Dependent Effects on Droplets Burning in Microgravity

June 1, 2009

Author(s)

Samuel L. Manzello, M Y. Choi

Measurements of soot concentration and soot mass were performed in microgravity conditions for hexane, heptane, nonane, and decane droplets burning in air at...

AIR-BRIDGE INTEGRATED STUB FILTER FOR SUB-MILLIMETER WAVE APPLICATIONS

June 1, 2009

Author(s)

Dazhen Gu, Fernando Rodriquez-Morales, Sigfrid Yngvesson

We report a coplanar waveguide notch filter with an integrated air-bridge, designed for operation at sub-millimeter wave frequencies and cryogenic temperatures...

Application of the Josephson effect in electrical metrology

June 1, 2009

Author(s)

Samuel P. Benz, Blaise Jeanneret

Over the last 30 years, metrology laboratories have used the quantum behavior of the Josephson effect to greatly improve voltage metrology. The following...

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