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40 results for “SiO2”
Dataset related to publication: Robust radiative cooling via surface phonon coupling-enhanced emissivity from SiO2 micropillar arrays
<p>Dataset related to the publication:</p><p>Zhenmin Ding, Xin Li, Hulin Zhang, Dukang Yan, Jérémy Werlé, Ying Song, Lorenzo Pattelli, Jiupeng Zhao, Hongbo Xu, Yao Li. Robust radiative cooling via surface phonon coupling-enhanced emissivity from SiO2 micropillar arrays. <i>International Journal of Heat and Mass Transfer</i>, 220, 125004 (2024). doi: <a href="https://doi.org/10.1016/j.ijheatmasstransfer.2023.125004">10.1016/j.ijheatmasstransfer.2023.125004</a></p><p>The repository contains MATLAB/Octave scripts to perform rigorous coupled-wave analysis (RCWA) simulations for a SiO2 layer decorated with micropillars.</p><p>The main script runs a series of rigorous electromagnetic simulations over the atmospheric transparency window wavelength range (8-13 µm) for all combination of three main structural parameters (pillar diameter, spacing and height), within a user-defined range.</p><p>Running the code requires the RETICOLO v9 RCWA code:</p><blockquote><p>Jean-Paul Hugonin, & Philippe Lalanne. (2021). Light-in-complex-nanostructures/RETICOLO: V9. Zenodo. <a href="https://doi.org/10.5281/zenodo.4419063">https://doi.org/10.5281/zenodo.4419063</a></p></blockquote>
SEM images of SiO2 and juniper charcoal powders (pure samples and intimate binary mixtures).
<p><strong>Summary:</strong><br>These images are those from SiO2 and juniper charcoal (JChc) powder samples observed with a SEM. The powders were obtained from commercial sources and these samples were prepared at the Bern University (Switzerland) as part of the D-A-CH/CoPhyLab project (https://www.cophylab.space/index.php?id=home)<br><br><strong>Details:</strong><br>¤ SEM images from the sample of pure SiO2:<br> 001-St5607t0_00.tif<br> 002-St5607t0_01.tif<br> 003-St5607t0_03.tif:<br><br>¤ SEM images from the sample of pure juniper charcoal powder:<br> 004-St5607t6_00.tif<br> 005-St5607t6_01.tif<br> 006-St5607t6_04.tif<br> 007-St5607t6_05.tif<br> 008-St5607t6_07.tif:<br><br>¤ SEM images from the sample of the intimate mixture with 90% SiO2 - 10% JChc by mass:<br> 009-St5606t1_00.tif<br> 010-St5607t1_01.tif:</p><p>¤ SEM images from the sample of the intimate mixture with 70% SiO2 - 30% JChc by mass:<br> 011-St5607t2_00.tif<br> 012-St5607t2_02.tif<br><br>¤ Zoom-in on the 70% SiO2 - 30% JChc sample at lignin fragment peppered with smaller JChc and SiO2 particles and agglomerates:<br> 013-St5607t2_03.tif:<br><br>¤ Zoom-in on the 70% SiO2 - 30% JChc sample with apparent large fragment of lignin structure:<br> 014-St5607t2_07.tif:<br><br>¤ SEM images from the sample of the intimate mixture with 50% SiO2 - 50% JChc by mass:<br> 015-St5607t3_00_St5606t3_00.tif<br> 016-St5607t3_03.tif<br><br>¤ SEM images from the sample of the intimate mixture with 30% SiO2 - 70% JChc by mass:<br> 017-St5607t4_00.tif<br> 018-St5607t4_01.tif, <br><br>¤ SEM images from the sample of the intimate mixture with 10% SiO2 - 90% JChc by mass:<br> 019-St5607t5_00.tif<br><br><strong>Addendum:</strong><br>These SEM images are associated with the spectroscopic and photometric data available at the following addresses:<br> https://doi.org/10.26302/SSHADE/EXPERIMENT_CF_20200723_000<br> https://doi.org/10.26302/SSHADE/EXPERIMENT_CF_20200813_000</p>
SEM image of SiO2 coated PyC tribocolloid
<p>This SEM image shows SiO2 spheres with 4.5 micron diameter coated by Pyrolytic carbon (PyC) at 950 C for 20 min</p>
UVC Up-Conversion and Vis-NIR Luminescence Examined in SrO-CaO-MgO-SiO2 Glasses Doped with Pr
<p><span>This work was supported by the National Science Centre, Poland, under grant number DEC-2021/41/B/ST5/03792 entitled: Phosphors for UVC LEDs: Self-Disinfecting Surfaces.</span> </p>
Nanoindentation hardness and modulus of Al2O3-SiO2-CaO and MnO-SiO2-FeO inclusions in iron
<p>Dataset corresponding to the following manuscript: </p> <p>Slagter, A., Setyadji, J.A., Vogt, E.L. <em>et al.</em> Nanoindentation Hardness and Modulus of Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>–CaO and MnO–SiO<sub>2</sub>–FeO Inclusions in Iron. <em>Metall Mater Trans A</em> (2024). https://doi.org/10.1007/s11661-024-07330-x</p> <p> </p> <p>The dataset contains raw nanoindentation data both in .hys (Hysitron software) and .txt format, as well as the files used for post-processing of the data.</p> <p>It also contains thermodynamic simulation files produces with Thermo-Calc software and its correspondig results exported to .txt format</p>
Dataset for article "W18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understanding" in Crystal Growth & Design, Des. 2024, 24, 1, 378–390
<p>Supported dataset for publication "W18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understanding" in Crystal Growth & Design Des. 2024, 24, 1, 378–390, https://doi.org/10.1021/acs.cgd.3c01094.</p> <p>The directory Data contains the figures (png, jpg), and vido (AVI) source data files for the manuscript.</p>
Dataset of the publication: Unlocking room-temperature bistable spin transition at the nanoscale: the synthesis of core@shell [Fe(NH2trz)3(NO3)2]@SiO2 nanoparticles
<p>Dataset of the publication: Unlocking room-temperature bistable spin transition at the nanoscale: the synthesis of core@shell [Fe(NH2trz)3(NO3)2]@SiO2 nanoparticles</p> <p>DOI: 10.1039/d4dt00911h</p> <p>A. Regueiro, M. Marti-Carrascosa, R. Torres-Cavanillas, E. Coronado </p> <p>Dalton Trans., 53, 20, 8764-8771 (2024)</p>
Pokorny, Stysk, Pinkas: Cu-SiO2-NFs Raw data
<p>This dataset contains XY data for the manuskript "Synthesis of high surface area Cu/SiO2 nanofiber catalysts for non-oxidative ethanol dehydrogenation", namely XY data for catalysis, isotherms, PXRD, TG DSC and XPS. Also raw data of size distribution. </p> <p>All data are in openly described .xlsx format.</p> <p><br>CATALYSIS/<br>-XY data for catalytic activity at 185, 220 255, and 325 °C for all nanofirbes catalysts (conversion and selectvity and yiled) and long term catalytic stability.</p> <p>Isotherms/<br>-XY data of isotherms for SiO2 calcined nanofibres and for the all nanofibres catalysts exported by Quantchrome AsiQwin.</p> <p>Nanofibres size distribution/<br>-Raw data of size distribution for SiO2 nanofibres and all nanofibres catalyst colected by imageJ.</p> <p><br>PRXD/<br> -XY data of PXRD for all spent and fresh nanofibres catalyst exported from Match!.</p> <p><br>TG-DSC/<br>-XY data of TG-DSC for SiO2 non-calcined nanofibres exported from Netch Prometeus Analysis.</p> <p>XPS/<br>-XY data of XPS for fresh and spent nanofibres catalysts. High resolution spectra of O 1s, C 1s, Cu 2p, and Si 2p were exported from CasaXPS.</p>
Silicon-29 Magic-Angle Flipping Nuclear Magnetic Resonance dataset for Na2O•1.5SiO2 glass
<p>Raw and processed silicon-29 Magic-Angle Flipping Nuclear Magnetic Resonance dataset for Na2O•1.5SiO2 glass from the publication "Silicon site distributions in an alkali silicate glass derived by two-dimensional Si-29 nuclear magnetic resonance" in <a href="https://doi.org/10.1021/jp9700342">J. Non-Cryst. Solids, 204, 294 (1996)</a>, by P. Zhang, C. Dunlap, P. Florian, P. J. Grandinetti, I. Farnan, and J. F. Stebbins.</p> <p>Details of the csdf dataset format are given in <a href="https://doi.org/10.1371/journal.pone.0225953"><em>PLOS ONE,</em> 15(1): e0225953 (2020)</a>, "Core Scientific Dataset Model: A lightweight and portable model and file format for multi-dimensional scientific data," D. Srivastava, T. Vosegaard, D. Massiot, and P.J. Grandinetti. The data within csdf files can be accessed with the Python package <a href="https://csdmpy.readthedocs.io/en/stable">csdmpy</a>, or other CSDM-compliant software.</p>
A comparison of human and mouse protein corona profiles of functionalized SiO2 nanocarriers
<p>Proteomic evaluation of the protein corona formed on SiO2 nanoparticles with human and mouse plasma.</p>
Flat thin films forward simulations (Complex fresnel rs and rp). Rough thin film of sio2, sweeped in thickness about 1micron (Intensity and raw rs and rp.) Both as measured with 0 to NA = 0.9 angles.
<p>This dataset is part of a project under the ATMOC consortium, involving case studies of various simple one-material layers and their optical properties, particularly focusing on their interaction with light in terms of reflectivity. It encompasses samples , studied by institutions like UT Twente, IMEC, and CEA. These samples include flat surfaces coated with materials like Si, Mo, Ru, Al, Ru, Ni, Mo, Nb, Pt, Ta, Cr, TiN, and and rough thermal SiO2 on Si wafers, with thicknesses ranging from a few nanometers to several micrometers, applied through processes like PVD deposition and thermal oxidation at high temperatures.</p> <p>The dataset leverages refractive index data from the online resource "refractiveindex.info" to simulate the optical properties of these layers. The reflection of light is primarily determined by the Fresnel reflection coefficient, with additional simulations for rough surfaces using JCMWave's Finite Element Method (FEM) to understand the effects of surface roughness on light reflection. Primary setup it represents is prototype of Coherent Fourier Scatterometry (typically used for critical parameters of grating reconstruction|).</p> <p>Data are stored in .mat and .csv formats, with MATLAB scripts for generating visualizations of the model results, such as pcolor plots of intensity reflections based on variables like cover thickness and k-axis normalization. Python examples are also provided for loading and visualizing the data. The datasets aim to offer a comprehensive understanding of the optical properties of these materials and structures, supporting the development of standards and models for optical measurements and applications. Additionally, the dataset includes references to further studies and methodologies, such as the T-matrix approach and the Fabry-Perot formula extension, indicating a scholarly foundation in optical physics and engineering research.</p>
Dataset for publication "Sol-gel derived silicate-phosphate glass SiO2–P2O5–CaO–TiO2: the effect of titanium isopropoxide on porosity and thermomechanical stability"
<p>In this work, sol-gel silica-phosphate glasses (30 mol.% P<sub>2</sub>O<sub>5</sub>) with defined porosity from 2.5 to 7.5 mol.% TiO<sub>2</sub> modifications were synthesized. Thee dimensional stability with respect to the thermal stability of porous silica-phosphate glasses modified by titanium dioxide (TiO<sub>2</sub>) through titanium isopropoxide (TTIP) precursor was studied.</p> <p>The data of thermomechanical and thermogravimetric analysis, X-ray diffraction, SEM -EDX, mercury intrusion porosimetry, N2 physisorption, micro-computed tomography, ultra-small-angle X-ray scattering are published.</p>
Raw data and metadata of SiO2 NP physicochemical characterisation, in vitro investigations and in silico predictions on protein corona formation
<p>Raw data and metadata of SiO<sub>2</sub> NP physicochemical characterisation, <em>in vitro</em> investigations and<em> in silico</em> predictions on protein corona formation. Data repository for Hasenkopf I. et al., 2022. Please note that “pristine” NPs in metadata are referred to as “bare” NPs in the paper.</p> <p>1. NP phys-chem raw data (xlsx-formatted) + corresponding metadata (xlsx-formatted)</p> <p>2. NP-protein binding raw data (xlsx-formatted) + corresponding metadata (xlsx-/pdf-formatted, ImageLab-formatted analyses, pdf-formatted ImageLab reports)</p> <p>3. huRBL mediator release raw data (xlsx-formatted) + corresponding metadata (pdf-formatted)</p> <p>4. <em>in silico</em> modelling raw data (xlsx-formatted) + corresponding metadata (config-/map-formatted)</p> <p> </p>
Dataset: Glass-forming ability and structural features of melt-quenched and gel-derived SiO2-TiO2 glasses
<p>Research data for Manuscript submission with title</p> <p><strong>Glass-forming ability and structural features of melt-quenched and gel-derived SiO<sub>2</sub>-TiO<sub>2</sub> glasses</strong></p> <p><strong>Abstract</strong></p> <p>SiO<sub>2</sub>-TiO<sub>2 </sub>glasses produced by melt-quenching or sol-gel spray-drying were compared to highlight their structural differences. Glass formation was possible by melt-quenching up to 10 mol% TiO<sub>2</sub>, while higher contents led to devitrification. Raman spectroscopy and solid-state <sup>17</sup>O and <sup>29</sup>Si MAS NMR confirmed the clear emergence of Ti-O-Si bonds and a tetrahedral oxygen coordination of Ti<sup>4+</sup> leading to full network connectivity, as also substantiated by the synthesis of TiO<sub>2</sub>-doped cristobalite. In gel-derived glasses, water content induced partial network depolymerization, thereby enhancing the solubility of TiO<sub>2</sub> in the hydrous silicate matrix. However, full dehydration during heating proved challenging due to the competing devitrification tendency: the glass-forming range in the anhydrous binary SiO<sub>2</sub>-TiO<sub>2</sub> system does not therefore appear to be significantly enlarged by the sol-gel synthesis route.</p>
données relative à l'article : "Étude de l'influence de différents paramètres sur la taille des nanoparticules de SiO2"
Open the record for dataset details and reuse information.
Data for a publication "Microstructure and mechanical properties of in-situ SiO2-reinforced mechanically alloyed CoCrFeNiMnX (X= 5, 20, 35 at.%) high-entropy alloys"
<p>Dataset contains data that has been used within the manuscript entitled: "Microstructure and mechanical properties of in-situ SiO2-reinforced mechanically alloyed CoCrFeNiMnX (X= 5, 20, 35 at.%) high-entropy alloys". For more information, please read the README.txt file.</p>
Bonding mechanism of cyanoacrylate on SiO2 and Au: Spectroscopic studies of the interface
<p>Cyanoacrylates form a highly reactive class of adhesives that develop significant adhesive strength to surfaces within a few seconds. Despite their commercial use, the exact bonding mechanism is virtually unknown. In the present work, we spin coat nm-thin films of ethyl cyanoacrylate on the two model substrates gold and silicon dioxide. The objective of the studies is to identify chemical interactions at the interface between adhesive and metal (oxide) which are possible reasons for film adhesion on the macroscopic scale. For this purpose, thin films of ethyl cyanoacrylate are investigated by X-Ray photoelectron spectroscopy.</p>
Videos: The crystallization mechanism of gel-derived SiO2-TiO2 amorphous nanobeads elucidated by high-temperature in-situ experiments
<p>Supplementary materials detailing high-temperature in-situ TEM experiments.</p> <p>Main article available at: <a href="https://doi.org/10.1021/acs.cgd.3c00300">https://doi.org/10.1021/acs.cgd.3c00300</a></p> <p> </p>
Effect of substitution of Al2O3 and B2O3 for SiO2 on the structural and thermodynamic properties of cover glass for liquid crystal display
By the substitution of Al2O3 and B2O3 for SiO2 of the glass network former, the structural and thermodynamic properties of aluminosilicate glass were investigated. Judged by Raman spectra, the bridging vibration Si-Ob increased with the Al2O3/SiO2 substitute. And the total non-bridging vibration Si-Onb decreased, indicating the enhancement of the structure compactness. While for B2O3/SiO2 substitute, the vibration at around 1010cm-1 and the bridging vibration Si-Ob in Q4 unit both decreased and the structure got loosened. Based on the study of the structure of glass, the thermodynamic properties such as viscosity, coefficient of the linear thermal expansion, high-temperature resistance, strain point, annealing point and softening point, as well as density and elastic modulus were investigated. With the enhancement of thermodynamic properties requirements, the difficulty in industrialized manufacturing was increased. In this paper, glass composition of sample 4 was suitable for floating process production.
Data for: Electrical Conductivity of Superionic Hydrous SiO2 and the Origin of Lower-mantle High Conductivity Anomalies Beneath Subduction Zones
<p><strong>Dataset S1.</strong> Experimental conditions and the measured resistance and conductivity of hydrous Al-bearing SiO2. </p>
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