Helmholtz Institute Freiberg for Resource Technology
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CT image sequences of sandwich packings: B1-250 plus B1-1000 at constant liquid rate of 10 m³/(m²h) and various gas rates
No full textThis repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-1000 (specific geometric surface area is 1000 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files
Data publication: Boosting electrode performance and bubble management via Direct Laser Interference Patterning
No full textDirect Laser Intereference Patterning is a promising approach to structure electrodes for alkaline water electrolysis to improve the electrode performance. By increasing the electrochemical active surface area and apply a superhydrophilic surface structure, the overpotential could be decreased significantly. The present data set compares three different spatial period and aspect ratios, defined as the ratio between structure depth and period, at applied current densities of j = 10, 31.62 and 100 mA/cm² in terms of electrode potential, detached bubble size and number of nucleation sites. As electrolyte 1 M KOH was used. All experiments were carried out under ambient conditions (T = 293 K,p = 1 bar).
A.) Description of Data.zip:
An overview of all performed experiments is given in the file Summary.csv. The data is analyzed as described in the corresponding journal publication Boosting electrode performance and bubble management via Direct Laser Interference Patterning. Each data set is stored in a .hdf5-file, with the relevant metadata incorporated into the attributes assigned to the groups/datasets within the .hdf5-file. The data files are structured in groups as follows:
Electrochemical Measurement Data
Galvanostatic Measurement Data
CV double-layer capacitance
LSV onset potential
Results
Detected Bubbles Sideview
Detected Bubbles Topview
Sideview Raw Images (only for SH2_LS_DoE_01.hdf5)
Topview Raw Images (only for SH2_LS_DoE_01.hdf5)
With the exception of a single comprehensive data set comprising unprocessed images (SH2_LS_DoE_01.hdf5), the remaining raw images from all performed measurements can be made available upon request.
B.) Description of Videos.zip:
Example videos for non-structured and laser-structured electrodes at a current density of j = 100 mA/cm² are given for both, sideview and topview. The provided characteristic videos are named after following scheme:
Perspective_Electrode_CurrentDensity
E.g.: Sideview_#1_NSE_100mAcm-2This project is supported by the Federal State of Saxony in terms of the "European Regional Development Fund" (H2-EPF-HZDR), the Helmholtz Association Innovation pool project "Solar Hydrogen", the Hydrogen Lab of the School of Engineering of TU Dresden, and BMBF (project ALKALIMIT, grant no. 03SF0731A)
Data publication: Magnetic imaging of thermally switchable antiferromagnetic/ferromagnetic modulated thin films
No full textCompiled raw data for the following measurements: MFM, VSM, XPEEM, XRD & XRR as well as simulation data
Data to "Fine Tuning of Optical Properties by Selective Stopping of Energetic Heavy Ions
No full textData for the manuscript "Fine_Tuning_of_Optical_Properties_by_Selective_Stopping_of_Energetic_Heavy_Ions" by
Ayman S. El-Said, Zamzam Ibnu-Sina, Shavkat Akhmadaliev, René Heller ,René Hübner, Michael Sorokin, Stefan Facsko and Christina Trautmann
raw data for:
- optical UV-VIS measurements
- RBS measurements
- SRIM simulations
- TEM image
Polymers Hyperspectral Imaging
No full textInvestigating State of the Art Hyperspectral Imaging Classification Models for Plastic Types Identification
Polymers Dataset
Description:
The polymers dataset is a multiscene Hyperspectral benchmark dataset comprising of reference polymer samples and shredded polymer samples in the visible to short-wave infrared, capturing 450 bands within the [400–2500] nm range using an AisaFENIX (Spectral Imaging Ltd, Oulu, Finland) spectrometer.
Two sample batches were investigated:
reference polymers of known composition and dimensions (15 X 10) cm, commonly found in e-waste.
shredded pieces of polymers with sizes ranging from (0.3–4) cm.
Data Format
HSI data: each hyperspectral data cube is accompanied by a data file and a .hdr file.
Ground truth mask: .png file (only for multi samples scenes)
Folder Organization
Polymers
Test
HSI: .dat & .hdr
Ground truth mask: test.png
False colour representation of the scene: .png
Train
HSI_ : 3 different scans of reference samples scanned
PC, PE, PET, PP: Hyperspectral cubes (11x11x450) .hdr & .dat
Data Classes in Masks
Masks contain 1 to 6 segmentation classes:
1: "PP"
2: "Black Plastic"
3: "PVC"
4: "PET"
5: "ABS"
6: "PE"
Code Repository
To facilitate reading and working with the data, Python codes are available on the GitHub repository:
https://github.com/hifexplo
https://github.com/Elias-Arbash
Citation
If you use this dataset, please cite the following article: (To be filled once published)
Contact
For further information or inquiries, please visit our website:
https://www.iexplo.space/
Contact Email: [email protected] HSI dataset of the work: INVESTIGATING STATE OF THE ART HYPERSPECTRAL IMAGING CLASSIFICATION MODELS FOR PLASTIC TYPES IDENTIFICATIO
Multiphase Python Repository by HZDR
No full textThe python package provides several routines and scripts required to operate the code and cases repositories containing additional code and set-ups for the open-source software released by the OpenFOAM Foundation. This includes among others utilities for pre- and post-processing of simulation cases, utilities to launch virtual environments containing the source code, and utilities to operate the continuous integration and continuous development environment in a self-hosted Gitlab instance
Data publication: Curvature-induced parity loss and hybridization of magnons: Exploring the connection of flat and tubular magnetic shells
No full textThis archive contains the raw data as well as the Tetrax (www.tetrax.software) Jupyter notebooks to produce the data that has been analyzed and used for the manuscript: Curvature-induced parity loss and hybridization of magnons: Exploring the connection of flat and tubular magnetic shells, Physical Review B 110, 134428 (2024), published on 17 October, 2024
CT image sequences of sandwich packings: B1-250 plus B1-1000 at constant liquid rate of 20 m³/(m²h) and various gas rates
No full textThis repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-1000 (specific geometric surface area is 1000 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files
CT image sequences of sandwich packings: B1-250 plus B1-1000 at constant liquid rate of 50 m³/(m²h) and various gas rates
No full textThis repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-1000 (specific geometric surface area is 1000 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files
CT image sequences of sandwich packings: B1-250 plus B1-750 at constant liquid rate of 20 m³/(m²h) and various gas rates
No full textThis repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-750 (specific geometric surface area is 750 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files