5 results
Now showing1 - 5 of 5
- Some of the metrics are blocked by yourconsent settings
Item type:Research Data, Access status: with files , An Electrochemical Impedance Spectroscopy Study of Mesoporous Silicon in Aqueous Electrolyte Solution(2024-03-04); The dataset presented here belong to an electrochemical impedance spectroscopy (EIS) study of mesoporous silicon in aqueous electrolyte solution (perchloric acid). The dataset contains EIS measurements performed at various static applied potentials so that a Mott-Schottky analysis of the electrode can be performed. Moreover, the dataset has an EIS study on a bulk silicon electrode, synthesized under equal conditions as the porous silicon electrode, so that a direect comparison between the two electrode types is possible.Data Type: Experimental Data147 109 - Some of the metrics are blocked by yourconsent settings
Item type:Research Data, Access status: with files , Wafer-scale fabrication of mesoporous silicon functionalized with electrically conductive polymers(2024-01-16); ; ; ; Dataset that contains different data on electrochemical and x-ray diffraction experiments of the synthesis and structure investigations of hybrid materials made out of conductive polymers and porous silicon. The mesoporous silicon epilayers are filled electrochemically with the polymers polypyrrole and poly-3,4-ethylendioxythiophen. Polyaniline could only be deposited on top of the porous silicon and not inside the mesopores. If applicable, the galvanostatic raw datasets have to normalized by the epilayer surface area of 7.89cm². The x-ray diffraction data contains both powder diffraction data sets (counts vs. 2-theta) and 2D detector images (P08 DESY synchrotron, 25 keV) of the monomer 2,5-Dibromo-3,4-ethylenedioxythiophene and the polymer poly-3,4-ethylendioxythiophen after solid state polymerization at 60°C. The samples investigated at the synchrotron (2D datasets) are hybrid materials in which the mesoporous pore space of the silicon is filled via spontaneous imbibition of the DBEDOT and subsequently polymerized to PEDOT. Each 2D image is taken at a different z position in order to mitigate beam damage.Data Type: Experimental Data77 510 - Some of the metrics are blocked by yourconsent settings
Item type:Research Data, Access status: with files , How Nanoporous Silicon-Polypyrrole Hybrids Flex Their Muscles in Aqueous Electrolytes: In Operando High-Resolution X-Ray Diffraction and Electron Tomography-Based Micromechanical Computer Simulations(2022-10-28); ; ; ; Dataset that contains different data on an in situ, combined electrochemical and x-ray diffraction investigation of the electrochemical actuation of a polypyrrole-filled porous silicon hybrid material. The pores of nanoporous silicon are filled by the electroactive polymer polypyrrole. An applied potential to the hybrid material immersed in an electrolyte solution leads to an incorporation of ions into the polymer and an expansion of the whole hybrid material. This electrochemical actuation is investigated by x-ray diffraction experiments, in which the lattice constant of the highly mono-crystalline porous silicon host material is studied with respect to the actuation. The dataset contains the electrochemical and the x-ray datasets. Moreover, a transmission electron microscopy tomography is performed on the polypyrrole-porous silicon hybrid material to obtain a three-dimensional model. This tomography reconstruction is included in the dataset. It can be transformed into an FEM model so that the actuation-induced strains and stresses in the complex porous silicon host structure can be studied and compared to the experimentally gained insights.Data Type: Dataset169 174 - Some of the metrics are blocked by yourconsent settings
Item type:Research Data, Access status: with files , Wafer-Scale Fabrication of Hierarchically Porous Silicon and Silica by Active Nanoparticle-Assisted Chemical Etching and Pseudomorphic Thermal OxidationDataset containing analysis on a hierarchical porous silicon structure. The structure consists of 1µm macropores hexagonally arranged and interconnected by mesopores in the range of 60nm. Included are a scanning electron micrograph of an overview of the macroporous structure which can be analysed to obtain structural properties such as the pore diameter, surface roughness, surface area and pore volume. Also included are reconstructed transmission electron microscopy and transmission x-ray microscopy tomography data to analyse the same structural parameters on smaller and larger length scale, respectively.Data Type: Dataset483 265 - Some of the metrics are blocked by yourconsent settings
Item type:Research Data, Access status: with files , 3D Reciprocal Space Mapping of a Columnar Discotic Liquid Crystal Confined in Nanopores(2019-11-25)Videos illustrating 3-D Reciprocal Space Mapping Using Synchrotron-Based X-ray diffraction. Electronic Support Information of the article "Self-Assembly of Liquid Crystals in Nanoporous Solids for Adaptive Photonic Metamaterials" Nanoscale DOI:10.1039/C9NR07143A (2019)Data Type: Video462 280