Search Publications

Displaying 426 - 450 of 846

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 the nonlinear behavior of electronic components and circuits. Specifically, we have used a

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 article reviews the history and present status of the research and development Josephson voltage

YBa 2 Cu 3 O 7-d coated conductor cabling for low ac-loss and high-field magnet applications

May 1, 2009

Author(s)

Daniel C. van der Laan

The electromechanical properties of YBa 2Cu 3O 7-δ coated conductors under high axial compressive strain are measured; they show no irreversible degradation in critical current up to -2 % strain. The high degree of elasticity of the ceramic layers in these

Operating Margins for a Pulse-Driven Josephson Arbitrary Waveform Synthesizer Using a Ternary Bit-Stream Generator

April 1, 2009

Author(s)

Ernest Houtzager, Samuel Benz, Helko vanden Brom

We describe measurements with a pulse-driven Josephson arbitrary waveform synthesizer (JAWS) that uses a ternary arbitrary bit-stream generator as the bias source. This system is meant to be used as an AC Josephson voltage standard (ACJVS). From these

Advanced Metrology for Nanoelectronics at the National Institute of Standards and Technology

March 11, 2009

Author(s)

Joaquin (. Martinez, Yaw S. Obeng, Stephen Knight

A broad range of programs at the National Institute of Standards and Technology address critical metrology and characterization challenges facing the nanoelectronics industry. A brief history of the program will be included. From these programs we will

Third Intermodulation Distortion and Harmonic Generation in Mismatched Nonlinear Transmission Lines

January 1, 2009

Author(s)

James C. Booth, Jordi Mateu, Carlos Collado, Eduard Rocas, Juan M. O'Callaghan, Nathan D. Orloff

This paper describes the procedure to obtain analytical expressions for the spurious signals generated in nonlinear transmission lines with impedance mismatch. Using these expressions one can rapidly extract the nonlinear parameters describing the

High-speed Nb/Nb-Si/Nb Josephson junctions for superconductive digital electronics

December 1, 2008

Author(s)

David I. Olaya, Burm Baek, Paul Dresselhaus, Samuel Benz

Josephson junctions with cosputtered amorphous Nb-Si barriers are being developed at NIST for use in voltage standard circuits. These junctions have the potential for a wide range of applications beyond voltage standards because their electrical properties

Ultra-high resolution alpha particle spectroscopy using calorimetry

September 23, 2008

Author(s)

Robert D. Horansky, Joel N. Ullom, James A. Beall, Gene C. Hilton, Kent D. Irwin, Don Dry, Beth Hastings, Stephen Lamont, Clifford R. Rudy, Michael W. Rabin

Calorimetry has been used since the late 1700?s to measure the heat output of physical processes ranging from chemical reactions to the respiration of organisms . Calorimetry is performed by measuring the temperature change caused by heat release into a

Dependence of the Critical Current of YBa 2 Cu 3 O7 -d Coated Conductors on In-Plane Bending

September 3, 2008

Author(s)

Daniel C. van der Laan, John (Jack) W. Ekin

A new method to measure the effect of in-plane bending on the critical current of YBa 2Cu 3O 7-d coated conductors is presented. Such bending mode can be important in transmission cables, saddleback magnets, and double-pancake windings. A linear strain

AC-DC Transfer Standard Measurements and Generalized Compensation with the AC Josephson Voltage Standard

April 1, 2008

Author(s)

Oliver F. kieler, Regis Landim, Samuel Benz, Paul Dresselhaus, Charles J. Burroughs

This paper presents ac-dc transfer standard measurements using the NIST pulse-driven ac Josephson voltage standard source. We have investigated the frequency dependence for several output voltages up to 200 mV for frequencies from 2.5 kHz to 100 kHz. We

Large sensitive-area NbN nanowire superconducting single-photon detectors fabricated on single-crystal MgO substrates

February 15, 2008

Author(s)

Shigehito Miki, Mikio Fujiwara, Masahide Sasaki, Burm Baek, Aaron Miller, Robert Hadfield, Sae Woo Nam, Zhen Wang

We report on the performance of large area NbN nanowire superconducting single-photon detectors (SSPDs). 20 x 20 υm 2 area SSPDs with 80 and 100 nm linewidths and 50% fill factor were fabricated in 4-nm-thick NbN films grown on single-crystal MgO

Operation of an X-ray transition-edge sensor cooled by tunnel junction refrigerators

January 19, 2008

Author(s)

Nathan A. Tomlin, James A. Beall, Gene C. Hilton, Kent D. Irwin, Galen O'Neil, Dan Schmidt, Leila R. Vale, Joel Ullom

We demonstrate successful cooling of an X-ray transition-edge sensor (TES) using solid-state refrigerators based on normal-metal/insulator/superconductor (NIS) tunnel junctions. Above the TES transition temperature (Tc), we use Johnson noise thermometry to

Systematic Error Analysis of Stepwise Approximated AC Waveforms Generated by a Programmable Josephson Voltage Standard

June 22, 2007

Author(s)

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

We have measured stepwise-approximated sinewaves generated by a Programmable Josephson Voltage Standard with several different output configurations. These data are analyzed to characterize the dominant error mechanisms for rms applications, such as ac-dc