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Displaying 1 - 25 of 573

National Institute of Standards and Technology Environmental Scan 2020

February 9, 2021
Heather M. Evans, Kristen Greene, William M. Healy, Elizabeth A. Hoffman, Catherine A. Rimmer, Anna V. Sberegaeva, Neil M. Zimmerman
The 2020 National Institute of Standards and Technology Environmental Scan provides an analysis of key external factors that could impact NIST and the fulfillment of its mission in coming years. The analyses were conducted through four separate lenses

Dual Josephson impedance bridge: towards a universal bridge for impedance metrology

October 22, 2020
Frederic Overney, Nathan E. Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna E. Fox, Paul D. Dresselhaus, Samuel P. Benz
This paper presents a full characterization of a Dual Josephson Impedance Bridge (DJIB) at frequencies up to 80 kHz by using the DJIB to compare the best available impedance standards that are (a) directly traceable to the quantum Hall effect, (b) used as

A Cryogenic Quantum-Based RF Source

September 10, 2020
Justus A. Brevik, Alirio De Jesus Soares Boaventura, Manuel C. Castellanos Beltran, Christine A. Donnelly, Nathan E. Flowers-Jacobs, Anna E. Fox, Peter F. Hopkins, Paul D. Dresselhaus, Dylan Williams, Samuel P. Benz
We performed a preliminary calibrated measurement of the output power of a Josephson arbitrary waveform synthesizer up to 1 GHz. We present the results and measurement procedure for generating quantum-based signals using an array of Josephson junctions

Microwave Modeling and Characterization of Superconductive Circuits for Quantum Voltage Standard Applications at 4 Kelvin

February 10, 2020
Alirio De Jesus Soares Boaventura, Dylan F. Williams, Richard A. Chamberlin, Jerome G. Cheron, Anna E. Fox, Paul D. Dresselhaus, Peter F. Hopkins, Ian W. Haygood, Samuel P. Benz
We developed a cryogenic multiline thru-reflect-line (TRL) calibration kit for microwave characterizing of superconductive circuits used in the Josephson arbitrary waveform synthesizer of the national institute of standards and technology (NIST). We also

Expanding the Capability of Microwave Multiplexed Readout for Fast Signals in Microcalorimeters

November 11, 2019
Kelsey M. Morgan, Daniel T. Becker, Douglas A. Bennett, Johnathon D. Gard, Jozsef Imrek, John A. Mates, Christine G. Pappas, Carl D. Reintsema, Daniel R. Schmidt, Joel N. Ullom, Joel C. Weber, Abigail L. Wessels, Daniel S. Swetz
Microwave SQUID multiplexing has become a key technology for reading out large arrays of X-ray and gamma-ray microcalorimeters with mux factors of 100 or more. The desire for fast X-ray pulses that accommodate photon counting rates of hundreds or thousands

Nanobolometer with ultralow noise equivalent power

October 11, 2019
Roope J. Kokkoniemi, Joonas Govenius, Visa Vesterinen, Russell Lake, A M. Gunyho, K-Y Tan, S Simbierowicz, Leif Gronberg, J Lehtinen, M Prunnila, Juha Hassel, Antti Lamminen, O P. Saira, Mikko Mottonen
Since the introduction of bolometers more than a century ago, they have been used in various applications ranging from chemical sensors, consumer electronics, and security to particle physics and astronomy. However, faster bolometers with lower noise are

Comparison of Multiple Methods for Obtaining PO Resistances with Low Uncertainties

September 3, 2019
Kwang Min Yu, Dean G. Jarrett, Albert F. Rigosi, Shamith U. Payagala, Marlin E. Kraft
Capabilities for high resistance determinations are essential for calibration of currents below 1 pA, as typically requested in several applications, including semiconductor device characterization, single electron transport, and ion beam technologies

Streaming Batch Eigenupdates for Hardware Neural Networks

August 6, 2019
Brian D. Hoskins, Matthew W. Daniels, Siyuan Huang, Advait Madhavan, Gina C. Adam, Nikolai B. Zhitenev, Jabez J. McClelland, Mark D. Stiles
Neuromorphic networks based on nanodevices, such as metal oxide memristors, phase change memories, and flash memory cells, have generated considerable interest for their increased energy efficiency and density in comparison to graphics processing units

Quantized Pulse Propagation in Josephson Junction Arrays

July 23, 2019
Christine A. Donnelly, Justus A. Brevik, Nathan E. Flowers-Jacobs, Anna E. Fox, Paul D. Dresselhaus, Peter F. Hopkins, Samuel P. Benz
We present time-domain electrical measurements and simulations of the quantized voltage pulses that are generated from series-connected Josephson junction (JJ) arrays. The transmission delay of the JJ array can lead to a broadening of the net output pulse

Proceedings of the First Workshop on Standards for Microfluidics

January 28, 2019
Darwin R. Reyes-Hernandez, Henne van Heeren
In the last two decades, the microfluidics/lab-on-a-chip field has evolved from the concept of micro total analysis systems, where systems with integrated pretreatment and analysis of chemicals were envisioned, to what is known today as lab-on-a-chip

Impedance tuning with photoconductors to 40 GHz

January 22, 2019
Jasper A. Drisko, Ari D. Feldman, Franklyn J. Quinlan, James C. Booth, Nathan D. Orloff, Christian J. Long
Light has been widely used to control a variety of microwave devices, including switches, antennas, and detectors. Here, we present a photoconductive device integrated into a coplanar waveguide to tune complex impedances at microwave frequencies with

Effect of Chloride Concentration on Copper Deposition in Through Silicon Vias

January 18, 2019
Trevor M. Braun, Daniel Josell, Manoj R. Silva, Thomas P. Moffat
This work examines Cu deposition in low chloride, suppressor containing electrolytes that exhibit a transition from passive to active deposition partway down filling features based on the coupling of suppression breakdown and surface topography. The

Black phosphorus tunneling field-effect transistors

December 21, 2018
Albert Davydov, Huairuo Zhang, Leonid A. Bendersky
Band-to-band tunneling field-effect transistors (TFETs)1-7 have emerged as promising candidates to replace conventional metal-oxide-semiconductor field-effect transistors (MOSFETs) for low-power integration circuits and have been demonstrated to overcome

Propagation of Compact-Modeling Measurement Uncertainty to 220 GHz Power-Amplifier Designs

November 5, 2018
Jerome Cheron, Dylan Williams, Konstanty Lukasik, Richard Chamberlin, Benjamin Jamroz, Erich N. Grossman, Wojciech Wiatr, Dominique Schreurs
We studied the impact of measurement uncertainties in a HBT model and their consequences on the electrical performance under large signal conditions at 9 GHz. Then we use the model with uncertainties to verify the ability of our model to accurately predict

Innovative Approaches to Combat Healthcare-Associated Infections Using Efficacy Standards Developed Through Industry and Federal Collaboration

October 5, 2018
Dianne L. Poster, Carl C. Miller, Yaw S. Obeng, Michael T. Postek, Troy E. Cowan, Richard A. Martinello
Nation-wide, healthcare-associated infections (HAIs) infect one in every 25 hospital patients, account for more than 100,000 deaths and increase medical costs by around $96-147B, each year. Ultraviolet-C (UV-C) antimicrobial devices are shown to reduce the

Determining Carbon Fiber Composite Loading with Flip-Chip Measurements to 110 GHz

September 1, 2018
Nina P. Basta, Aaron Hagerstrom, Jasper A. Drisko, James Booth, Edward Garboczi, Christian Long, Nathan Orloff
— Electrical properties of materials are a necessary part of any circuit design. With emerging applications at millimeter- wave frequencies, there is a need to characterize new materials before they come to market. At frequencies below about 67 GHz, it is
Displaying 1 - 25 of 573