Helmholtz Institute Freiberg for Resource Technology
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Primary experimental data: Dynamical interplay between superconductivity and charge density waves: A nonlinear terahertz study of coherently driven 2H−NbSe2
No full textThis publication contains raw data and metadata (labbook entries) related to the
The data for our NbSe2 paper were primarily collected during the beamtime starting on 2022-05-08 and 2021-08-11. Below are the specific details:
(1) Figure 1:
The data are from the beamtime starting on 2022-05-08:
File numbers 046 to 064, measured on 2022-05-09.
File numbers 093 to 108, measured on 2022-05-10.
(2) Figure 2:
he data are from the beamtime starting on 2021-08-11:
File numbers 038 to 069, measured on 2021-08-14.
files: From "038_300GHz_NbSe2-flake_WG90_gain20_2p79K_THG_20mW.0" to "069_300GHz_NbSe2-flake_WG90_gain20_44p6K_THG_21mW.0".
(3) Figure 3:
The data are also from the beamtime starting on 2021-08-11:
File numbers 01 to 22, measured on 2021-08-15.
files: From "01_Polarization_75K_W3_0_W2_45_Wsample_05.0" to "32_Polarization_4K_W3_90_W2_44_Wsample_05.0"
High-performance and ultrafast single germanium nanowire photodetectors
No full textSemiconductor nanowire-based photodetectors with high sensitivity and fast photoresponse in the near-infrared wavelength range are crucial for applications in light-wave communication switches, as well as environmental and atmospheric sensing. However, to advance this field, it is essential to develop innovative fabrication techniques that improve device performance. Here, the fabrication of an axial p–n junction along single germanium nanowires (Ge NWs) and their photoresponse characterization at near-infrared wavelengths are reported. The resulting devices exhibit rectifying current–voltage characteristics with a high rectification ratio in dark conditions and operate with high sensitivity at zero bias under illumination. A high responsivity of 1.72 AW−1, a low noiseequivalent power of 5.68 × 10−11 W/√Hz, and a high-frequency response with a 3dB cut-off frequency of 2.85 GHz are determined under 850 nm laser illumination at reverse bias. The high sensitivity of the Ge NW-based photodetectors is ascribed to the radial built-in electric field, which increases the carrier lifetime. In addition, the small size of the Ge NWs results in very small capacitance, leading to very fast response. These results have significant potential for advancing high-speed and low-power photodetectors in next-generation optical communication systems and integrated optoelectronic devices
Data publication: Magnetization reversal in CoO/Co exchange-biased thin films prepared by post-growth oxidation
No full textCo thin films grown by thermal evaporation have been oxidized in-situ, in ambient conditions, as well as using a plasma device. In all cases, the hysteresis loops reveal exchange-bias coupling between the Co and the CoO layers. We show that the CoO/Co systems fabricated under ambient conditions and in a pure oxygen atmosphere couple magnetically in a similar way. Contrary, the CoO layer produced by plasma treatment shows a lower bias field, coercive field and blocking temperature. The systems also exhibit asymmetric hysteresis loops with different magnetization reversal for the lower descending and upper ascending magnetization branches. In one direction of the external magnetic field sweep the CoO/Co system switches mainly by domain wall motion, while for the opposite field, the influence of the coherent magnetization rotation on the reversal process is stronger. The magnitude of the asymmetry is dependent on the measurement temperature
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: Analysis of loss of flow without scram test in the FFTF reactor – Thermal hydraulics data
No full textThermal hydraulic system models of the FFTF with the Cycle 8C core for LOFWOS Test #13, created using the ATHLET code, along with the benchmark results (point kinetics and spatial kinetics), sensitivity analyses, cross section data and DYN3D models for coupled DYN/ATHLET calculations
Data publication: Aluminium substituted yttrium iron garnet thin films with reduced Curie temperature
No full textRBS Messungen der Aluminium substituted yttrium iron garnet thin film
PCB-Vision: A Multiscene RGB-Hyperspectral Benchmark Dataset of Printed Circuit Boards
No full textPCB-Vision Dataset
Description:
The PCB-Vision dataset is a multiscene RGB-Hyperspectral benchmark dataset comprising 53 Printed Circuit Boards (PCBs). The RGB images are collected using a Teledyne Dalsa C4020 camera on a conveyor belt, while hyperspectral images (HSI) are acquired with a Specim FX10 spectrometer. The HSI data contains 224 bands in the VNIR range [400 - 1000]nm.
Data Format
RGB Images: .png files
PCB Masks: .jpg files
HSI Data: Each hyperspectral data cube is accompanied by a data file and a .hdr file.
Folder Organization
PCBVision
HSI/
53 subfolders (one for each PCB)
'General_masks' folder for 'General' segmentation ground truth
'Monoseg_masks' folder for 'Monoseg' segmentation ground truth
'PCB_Masks' folder for masks of the 53 PCBs in the hyperspectral cube
RGB/
53 .jpg images
'General' folder for RGB images 'General' segmentation ground truth
'Monoseg_masks' folder for RGB images 'Monoseg' segmentation ground truth
Data Classes in Masks
Masks (both 'General' and 'Monoseg') contain 1 to 4 segmentation classes:
0: "Others"
1: "IC"
2: "Capacitors"
3: "Connectors"
Code Repository
To facilitate reading and working with the data, Python codes are available on the GitHub repository:
https://github.com/hifexplo/PCBVision
Citation
If you use this dataset, please cite the following article:
Word:
Arbash, Elias, Fuchs, Margret, Rasti, Behnood, Lorenz, Sandra, Ghamisi, Pedram, & Gloaguen, Richard. (2024). PCB-Vision: A Multiscene RGB-Hyperspectral Benchmark Dataset of Printed Circuit Boards (Version 1) [Data set]. Rodare. http://doi.org/10.14278/rodare.2704
Latex:
@article{arbash2024pcb, title={PCB-Vision: A Multiscene RGB-Hyperspectral Benchmark Dataset of Printed Circuit Boards}, author={Arbash, Elias and Fuchs, Margret and Rasti, Behnood and Lorenz, Sandra and Ghamisi, Pedram and Gloaguen, Richard}, journal={arXiv preprint arXiv:2401.06528}, year={2024} }
Contact
For further information or inquiries, please visit our website:
https://www.iexplo.space/
Contact Email: [email protected]
Data publication: A quantitative analysis of the effect of box size in N-body simulations of the matter power spectrum
No full textThe dataset consists of the matter power spectra at four redshifts (z=80,50,15,0) generated by simulating Lambda-Cold Dark Matter cosmology within the cosmic screening approach as described in the associated paper. Outputs of six distinct runs are available for boxes with L= 280, 560, 1680, 4480, 5120, 5632 Mpc/h comoving sizes, each with 2 Mpc/h resolution
Data publication: Pair Production in Circularly Polarized Waves
No full textData sets used to generate the figures and tables in the associated paper. In addition, Matlab files have been attached to ensure that the data can be read correctly
Data Publication: Positron emission tomography quantifies crystal surface reactivity during sorption reactions
No full textThis dataset contains time resolved positron emission tomography (pet) images of a transport study in artificial sediment, as well as ct images of the used sample.The authors gratefully acknowledge funding by the German Federal Ministry of Education and Research (BMBF), grant number 02NUK066A