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601 results found

Correlation-Matrix Approaches for Testing Wireless Devices in Reverberation Chambers

Data provided by  National Institute of Standards and Technology

The data correspond to the paper Practical Correlation-Matrix Approaches for Standardized Testing of Wireless Devices in Reverberation Chambers. Abstract: We extend the autocorrelation-based approaches currently used in standards to full correlation matrix-based approaches in order to identify correlation between both spatially adjacent and non-adjacent samples in reverberation-chamber measurements. We employ a scalar metric that allows users to identify the number of effectively uncorrelated samples in new types of stirring sequences.

Tags: cellular device measurements; metrology for wireless systems; millimeter-wave metrology; millimeter-wave wireless device; mobile communications; modulated signals; over-the-air measurements; reverberation chamber; uncertainty; wireless systems,

Modified: 2025-04-06

Supporting Info for Synergistic Fire Resistance of Nanobrick Wall Coated 3D Printed Photopolymer Lattices

Data provided by  National Institute of Standards and Technology

Videos and .stl files from Synergistic Fire Resistance of Nanobrick Wall Coated 3D Printed Photopolymer Lattices.The videos are from the fire tests of 3D printed photopolymer parts, from which time series still images were acquired. In these tests, printed parts (with or without a nanocoating) are subjected to direct blowtorch exposure until part failure (defined as when the part shatters). Most videos include time after torch removal while the part continues to burn.The .stl files are the files used to 3D print the parts studied in this work.

Tags: Fire protection,layer-by-layer,additive manufacturing,

Modified: 2025-04-06

Data for "A distributed theory for contactless interconnects at terahertz frequencies"

Data provided by  National Institute of Standards and Technology

Included here are figures and other relevant data from the paper "A distributed theory for contactless interconnects at terahertz frequencies". Abstract: Here we test a multimodal model for distributed contactless interconnects by comparing it to 3D full-wave simulations. In comparison to 3D simulations, the model offers insight into how the interconnect works and reduces the computational cost of estimating the interconnect?s performance.

Tags: On-Wafer,microwave,amplifier,photomixers,frequency combiner,frequency comb,electronics,terahertz,

Modified: 2025-04-06

Data for "Distributed contactless interconnects for millimeter-wave heterogeneous integration"

Data provided by  National Institute of Standards and Technology

Included here are figures and other relevant data from the paper "Distributed contactless interconnects for millimeter-wave heterogeneous integration", submitted to TMTT Letters. Abstract: State-of-the-art integrated circuits leverage dissimilar materials to optimize system performance. Such heterogeneous integration often involves multiple chips electrically coupled to one another via bump bonds or wire-bond interconnects.

Tags: On-Wafer,microwave,amplifier,photomixers,frequency combiner,frequency comb,electronics,terahertz,

Modified: 2025-04-06

Historic test velocity data used for chronograph/light screen system uncertainty analysis.

Data provided by  National Institute of Standards and Technology

Projectile velocity data, from tests using the National Institute of Justice (NIJ) body armor standard (NIJ-0101.06) test threats, collected over a numbers of years at the NIST ballistics laboratory, that was used to assess the uncertainty associated with a chronograph/light screen system.

Tags: Ballistics,velocity measurement,

Modified: 2025-04-06

Trojan Detection Software Challenge - cyber-pdf-dec2022-train

Data provided by  National Institute of Standards and Technology

Round 12 Train DatasetThis is the training data used to create and evaluate trojan detection software solutions. This data, generated at NIST, consists of pdf malware classification AIs trained Contaigio dataset feature vectors. A known percentage of these trained AI models have been poisoned with a known trigger which induces incorrect behavior. This data will be used to develop software solutions for detecting which trained AI models have been poisoned via embedded triggers. This dataset consists of 120 AI models using a small set of model architectures.

Tags: Trojan Detection; Artificial Intelligence; AI; Machine Learning; Adversarial Machine Learning;,

Modified: 2025-04-06

Hot-wire anemometer gas speed measurements in a commercial laser powder bed fusion machine

Data provided by  National Institute of Standards and Technology

Gas speed measurements using hot-wire anemometers (HWA) on a commercial laser powder bed fusion (LBPF) machine were recorded as a function of position (X, Y, Z) and nozzle type (standard and grid).

Tags: additive manufacturing,gas flow,anemometer,machine qualification,

Modified: 2025-04-06

Data to Support the Development of Rapid GC-MS Methods for Seized Drug Analysis

Data provided by  National Institute of Standards and Technology

This dataset contains raw datafiles that support the development of rapid gas chromatography mass spectrometry (GC-MS) methods for seized drug analysis. Files are provided in the native ".D" format collected from an Agilent GC-MS system. Files can be opened using Agilent proprietary software or freely available software such as AMDIS (which can be downloaded at chemdata.nist.gov). Included here is data of seized drug mixtures and adjudicated case samples that were analyzed as part of the method development process for rapid GC-MS.

Tags: forensics,Seized Drug,GC-MS,

Modified: 2025-04-06

Quantifying the Effect of Guest Binding on Host Environment Associated Data

Data provided by  National Institute of Standards and Technology

S-parameter, Matlab Analysis files for "Quantifying the Effect of Guest Binding on Host Environment Associated Data"Abstract:The environment around a host-guest complex is defined by of intermolecular interactions between solvent molecules and counter ions. These interactions govern both the solubility of these complexes and the rates of reactions confined within them11. Such noncovalent2 interactions between solvent molecules and ions are challenging to detect by standard analytical chemistry techniques.

Tags: Microwave Microfluidics,permittivity,loss,ionic conductivity,ion pairing,

Modified: 2025-04-06

Data to accompany "Low Electron Beam Energy X-ray Microanalysis: The Adventure Continues!"

Data provided by  National Institute of Standards and Technology

EDS spectra measured at E0 = 5 keV for 75 materials are provided along with the standards used for quantification with the NIST DTSA-II software for electron-excited X-ray microanalysis with energy dispersive spectrometry.The data sets are organized according to the analytical instrument platform used, and an EDS detector configuration appropriate to each EDS spectrometer is provided .

Tags: SEM-EDS,SEM,EDS,scanning electron microscopy,energy dispersive x-ray spectrometry,X-ray spectrometry,silicon-drift detector,SDD,low beam energy,low keV,

Modified: 2025-04-06