Dataset Search
Sort By
Search results
1169 results found
Measuring VHF Detector Linearity using a Quantum-Based Source, CPEM 2024
Data provided by National Institute of Standards and Technology
Data sets for measuring VHF detector linearity using a Josephson Arbitrary Waveform Synthesizer (JAWS). Two instruments are measured: an RF power sensor and a fast ADC. The VHF-JAWS source consists of a chip with 12,810~Josephson junctions located in a cryocooler and driven to produce quantum-based ac waveforms at frequencies up to 50.05~MHz and power up to -19~dBm. We first confirm that the device is operating correctly by measuring the dc offset quantum-locking range (Fig. 2) and then measure the system output power with an RF power sensor (Fig.
Tags: Josephson junction arrays,power measurement standards,digital-analog conversion,signal synthesis,superconducting integrated circuits,superconducting microwave devices,
Modified: 2025-04-06
2-Methylbiphenyl: Experimental and Derived Thermodynamic Properties
Data provided by National Institute of Standards and Technology
This document is part of a series of reports describing experimental property measurements completed at the National Institute for Petroleum and Energy Research (NIPER) in Bartlesville, Oklahoma, in the 1980s and 1990s. Members of the Bartlesville Thermodynamics Group included William D. "Bill" Good, William V. "Bill" Steele, Bruce E. Gammon, Norris K. Smith, Stephen E. Knipmeyer, An "Andy" Nguyen, Timothy D. Klots, I. A. "Alex" Hossenlopp, Aaron P. Rau, William B. Collier, John F. Messerly, Ann G. Osborn, Susan Lee-Bechtold, Donald G. Archer, Ian R.
Tags: density,vapor pressure,enthalpy of formation,heat capacity,thermodynamic functions,
Modified: 2025-04-06
On-Wafer Device Characterization Including Uncertainty Estimates to 1.0 THz
Data provided by National Institute of Standards and Technology
data published in paper "On-Wafer Device Characterization Including Uncertainty Estimates to 1.0 THz"This dataset contains the calibrated scattering parameters (S-parameters) of a thru that was not used in calibration, and the simulated and calibrated S-parameters for series and shunt capacitors for both technology 1 and technology 2. It also contains the simulated and extracted capacitance from these S-parameters of the series and shunt capacitors.
Tags: calibration,Coplanar Waveguide,Indium Phosphide,monolithic microwave integrated circuit,multiline thru-reflect-line,On-Wafer,S-parameters,terahertz,vector network analyzer,
Modified: 2025-04-06
Dataset for Establishing a Reference Focal Plane Using Machine Learning and Beads for Brightfield Imaging
Data provided by National Institute of Standards and Technology
This dataset consists of sets of images corresponding to the data sets 1-8 described in Table 1 in the manuscript "Establishing a Reference Focal Plane Using Machine Learning and Beads for Brightfield Imaging".Data sets from A2K contain two .zip folders: one with the .tiff images and one with the corresponding .txt file with live and dead cell concentration enumeration.
Tags: optical microscopy,image processing,convolutional neural network,reference focal plane,
Modified: 2025-04-06
Leakage Current Pathways in Josephson Arbitrary Waveform Synthesizer StandardsData shown in CPEM 2024 abstract
Data provided by National Institute of Standards and Technology
Dataset for multiple publishable figures in the paper entitled "Leakage Current Pathways in Josephson Arbitrary Waveform Synthesizer Standards" to be submitted to CPEM 2024
Tags: Leakage currents,measurement uncertainty,Josephson junctions,standards,superconducting integrated circuits,Voltage measurement.,
Modified: 2025-04-06
Code to accompany "Superancillary Equations for the Multiparameter Equations of State in REFPROP 10.0"
Data provided by National Institute of Standards and Technology
This record includes the C++ files used to generate superancillary equations (sets of Chebyshev expansions for the co-existing thermodynamic data) for the multiparameter EOS included in NIST REFPROP 10.0. The calculations in C++ are done in extended precision and the Chebyshev expansions are stored in double precision. The python scripts are used to post-process the generated sets of Chebyshev expansions.
Tags: Chebyshev expansions,function approximation,equations of state,phase equilibria,
Modified: 2025-04-06
3D shape and size data for 10084 and 14163 lunar regolith particles
Data provided by National Institute of Standards and Technology
This database contains 3D shape and size data for 10084 (Apollo 11) and 14163 (Apollo 14) real lunar regolith particles, along with STL files for the approximately 14,000 particles studied via X-ray micro-CT and X-ray nano-CT. The database also contains similar information for the lunar regolith simulant JSC-1A but for over 100,000 particles. There are also images for all 10084 and 14163 particles examined by SEM, which are different particles out of the same material.
Tags: lunar regolith,Apollo 11,Apollo 14,10084,14163,shape,size,X-ray micro computed tomography,light scattering,projected area,size distribution,shape distribution,NASA,
Modified: 2025-04-06
Code for qDIC-based Strain Localization Analysis with Wavelets (Q-SLAW)
Data provided by National Institute of Standards and Technology
This dataset is an archival version of an algorithm implementation for strain localization analysis in digital image correlation data. The original application is to detect the occurrence of localization (i.e., collective buckling, hotspots, etc.) in uniaxial stress testing of polymer foams instrumented with 2D digital image correlation. The full-field strain maps are processed with a Marr wavelet and regions of excess strain are identified.
Tags: Digital Image Correlation,strain localization,compaction band,Foam,
Modified: 2025-04-06
Code for "An atomic boson sampler"
Data provided by National Institute of Standards and Technology
This package is a collection of scripts and methods for analyzing data from the Kaufman lab's experiment for boson sampling using atoms, tunneling in their optical lattice.Please read the paper [arXiv:2307.06936](https://doi.org/10.48550/arXiv.2307.06936) for context.The data included in the subdirectory ``Boson sampling data/`` consists of shots of the experiment, where the atoms are prepared in a particular pattern,then the atoms are allowed to tunnel, then the atom number parity is measured on each site.From this data, we estim
Tags: quantum,BosonSampling,
Modified: 2025-04-06
Using Open-Path Dual-Comb Spectroscopy to Monitor Methane Emissions from Simulated Grazing Cattle
Data provided by National Institute of Standards and Technology
Data published in the paper "Using Open-Path Dual-Comb Spectroscopy to Monitor Methane Emissions from Simulated Grazing Cattle". A controlled methane release experiment was performed to determine if dual comb spectroscopy (DCS) can detect methane concentration enhancements above the atmospheric background produced by a typical herd of beef cattle in an extensive grazing system. Open-path DCS was used to measure downwind and upwind methane concentrations from ten point-sources of methane simulating cattle.
Tags: agriculture,atmospheric measurements,
Modified: 2025-04-06