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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: 2024-09-06
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: 2024-09-06
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: 2024-09-06
Flow-induced crystallization in polyolefin blends: supporting data files and images
Data provided by National Institute of Standards and Technology
Polyolefins, including polyethylene and polypropylene, are some of the most common plastics in use today. Unfortunately, the recycling rates of these polymers is low due to separation difficulties. Because of this, understanding the properties of polyolefin blends is of particular interest. Using a combination of rheology, Raman spectroscopy, microscopy, and differential scanning calorimetry, we studied the rheological properties and crystallization kinetics of polyolefin blends under shear as a function of composition.
Tags: polyolefins,polymer blends,polyethylene,polypropylene,crystallization kinetics,flow-induced crystallization,recycling,
Modified: 2024-09-06
Differential Measurements of an AC Source with a Josephson Arbitrary Waveform Synthesizer
Data provided by National Institute of Standards and Technology
The abstract of the paper [1] is:This paper describes differential sampling measurements of an ac source and a Josephson arbitrary waveform synthesizer (JAWS).A new iterative approach for aligning the phases of the JAWS and the source waveforms was implemented to minimize the differential voltage at the digitizer.
Tags: Josephson arrays,Measurement techniques,standards,superconducting integrated circuits,voltage measurement,
Modified: 2024-09-06
A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica-Composites for Carbon Capture
Data provided by National Institute of Standards and Technology
The database includes thermal data analysis for silica-composites that conclude the loading amount of amine adsorbents of each composite as well as each specimen's ability to adsorb CO2. The data repository includes raw data files for: thermogravimetric analysis (TGA) weight loss and CO2 adsorption traces, and Fourier Transform Infrared Spectroscopy (FTIR) spectra?s. For more information see the readme and data documentation. A complete manuscript describing data collection, analysis, and database documentation is to be published. File formats for data include: .txt and .csv.
Tags: FTIR,thermal analysis,DSC,TGA,optical microscopy,Advanced Materials,direct air capture materials,
Modified: 2024-02-22
Data for Filtering Organized 3D Point Clouds for Bin Picking Applications
Data provided by National Institute of Standards and Technology
Contains scans of a bin filled with different parts ( screws, nuts, rods, spheres, sprockets). For each part type, RGB image and organized 3D point cloud obtained with structured light sensor are provided. In addition, unorganized 3D point cloud representing an empty bin and a small Matlab script to read the files is also provided. 3D data contain a lot of outliers and the data were used to demonstrate a new filtering technique.
Tags: 3D point cloud,stochastic outlier removal,filtering 3D data for bin picking,
Modified: 2024-09-06
Raw data from NIST-led interlaboratory study on the working curve in vat photopolymerization
Data provided by National Institute of Standards and Technology
Raw data from interlaboratory study on the working curve (Link to publication here: ). Each dataset has a header indicating the nominal wavelength and intensity of the light engine used to measure the working curve. Each file contains paired radiant exposure (in units of mJ/cm2) and cure depth (in units of µm) measurements provided by participants.
Tags: vat photopolymerization,stereolithography,jacob's equation,additive manufacturing,digital light processing,
Modified: 2024-09-06
Dataset demonstrating feasibility of two-ladder sensing approach
Data provided by National Institute of Standards and Technology
Datasets included in manuscript on simultaneous two-ladder sensing, titled "Independent Rydberg Atom Sensing using a Dual-Ladder Scheme" to be submitted to Applied Physics Letters. The data for figure 1 contains experimental EIT traces for both ladders, and figure 2 contains the data for false-color plots showing the polarization-specific response of each ladder.
Tags: Rydberg atoms,atomic physics,receivers,fields strength,electric field,volts/meter,
Modified: 2024-09-06
Interlaboratory Measurement of Adeno-Associated Virus:Comparative Quantification of Full and Empty Capsids
Data provided by National Institute of Standards and Technology
Summary Data For Interlaboratory Study on Adeno-Associated Virus Particles. This contains all the data to be published in a journal article detailing the measurement of full-to-total ratio by analytical ultracentrifugation, size exclusion chromatography-multiangle light scattering, polymerase chain reaction, and ultraviolet spectrophometry. Samples here consisted of nominally 100% full particles, nominally 0% full particles, and a 50:50 mixture of the two.
Tags: AAV,interlaboratory,AUC,SEC-MALS,PCR,UV-Vis,
Modified: 2024-09-06