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1,111 results for “Nanoparticles”
Research data supporting: "Toward Chemotactic Supramolecular Nanoparticles: From Autonomous Surface Motion Following Specific Chemical Gradients to Multivalency-Controlled Disassembly"
<p>This repository contains the set of data shown in the paper "<em>Toward Chemotactic Supramolecular Nanoparticles: From Autonomous Surface Motion Following Specific Chemical Gradients to Multivalency-Controlled Disassembly</em>", published on <em>ACS Nano</em> (DOI: 10.1021/acsnano.1c0500).</p> <p>All the input data needed to run the simulations and get the results are organized in 5 different folders:</p> <ul> <li> <p><code>1-MinimlisticCGModel/</code></p> <p>in this folder there are the Gromacs and PLUMED input files for reproducing the minimalistic coarse-grained model shown in the article.</p> </li> <li> <p><code>2-AAandFineCGModels/</code></p> <p>the folder contains the atomistic (<code>monomerAA/</code>) and the coarse-grained Martini "wet" (<code>monomerGCWet/</code>) input files for modelling the Original monomer with one carboxyl group. The coarse-grained Martini "dry" (<code>monomerCGDry/</code>) model is reported for the Original monomer at the three different charged states.</p> </li> <li> <p><code>3-UnbiasedMD/</code></p> <p>this folder includes the Gromacs input files needed to reproduce the Unbiased simulations as shown in the article.</p> </li> <li> <p><code>4-MetaD/</code></p> <p>this folder incorporates the Gromacs and PLUMED input files necessary to reproduce both the Infrequent CG Metadynamics simulations (<code>InfrequentMetaD/</code>) and the Multiple-walker CG Metadynamics simulations (<code>MultipleWalkerMetaD/</code>)</p> </li> <li> <p><code>5-InSilico/</code></p> <p>in this folder all the files used to run the simulations about the exoliation experiments (<code>Original/</code>, <code>Type-1/</code>, <code>Type-2/</code>, <code>Type-3/</code>, <code>Type-4/</code>) are reported. Every subfolder contains all input files for the three different charged monomers (<code>Olig1-/</code>, <code>Olig2-/</code>, <code>Olig3-/</code>).</p> </li> </ul>
Dataset for Fast Li-ion Storage and Dynamics in TiO2 Nanoparticle Clusters Probed by Smart Scanning Electrochemical Cell Microscopy
<p>This dataset provides the raw data to the manuscript </p> <p><strong>"Fast Li-ion Storage and Dynamics in TiO<sub>2</sub> Nanoparticle Clusters Probed by Smart Scanning Electrochemical Cell Microscopy"</strong> published in Angewandte Chemie International Edition.</p> <p>Specifically, the following measurements are provided:</p> <ul> <li>Powder XRD data for the commercial anatase TiO<sub>2</sub>.</li> <li>Cyclic voltammetry data from SECCM measurements.</li> <li>SEM images of the TiO<sub>2</sub> nanoparticles after SECCM tip landing and electrochemical measurement.</li> </ul>
Magnesium Hydroxide Nanoparticles Production from Natural Bitterns
<p>Magnesium hydroxide nanoparticles are widely employed in numerous industrial applications. Several preparation methods have been proposed using mainly synthetic Mg<sup>2+</sup> containing solutions. In the present work, the possibility of producing Mg(OH)<sub>2</sub> nanoparticles from real bitterns, the by-product of sea salt production, is investigated. Bitterns are highly concentrated Mg<sup>2+</sup> containing solutions whose exploitation can turn a waste into valuable products embracing the circular economy idea. Two bitterns collected from Galia and Margi saltworks of the district of Trapani (Italy) were studied. Galia and Margi bitterns had a 1 M and 2.5 M Mg<sup>2+</sup> concentration, respectively. A 2 mm diameter circular-cross sectional T-mixer was adopted to ensure fast reactant mixing. NaOH solutions were employed as precipitant agents. Mg(OH)<sub>2</sub> nanoparticles characterized by cationic and mass purity higher than 99 % and 90 %, respectively, were successfully produced when treating Galia bitterns, while the excessive Margi Mg<sup>2+</sup> concentration yielded stronger micrometer Mg(OH)<sub>2</sub> agglomerates.</p>
Modulating the Surface Properties of Lithium Niobate Nanoparticles by Multifunctional Coatings Using Water-in-Oil Microemulsions
<p>Raw data associated to the study entitled <em>Modulating the Surface Properties of Lithium Niobate Nanoparticles by Multifunctional Coatings Using Water-in-Oil Microemulsions.</em></p> <p>Metadata file</p> <p>DLS measurements</p> <p>FTIR characterization</p> <p>Labbook</p> <p>NMR characterization</p> <p>TEM and EDX analysis</p> <p>XRD measurements</p>
Dataset for publication Sikora P., El-Khayatt A.M., Saudi H.A., Liard M., Lootens D., Chung S.-Y., Woliński P., Abd Elrahman M. Rheological, mechanical, microstructural and radiation shielding properties of cement pastes containing magnetite (Fe3O4) nanoparticles. International Journal of Concrete Structures and Materials (2023), 17, 7
<p>Open dataset for publication Sikora P., El-Khayatt A.M., Saudi H.A., Liard M., Lootens D., Chung S.-Y., Woliński P., Abd Elrahman M. Rheological, mechanical, microstructural and radiation shielding properties of cement pastes containing magnetite (Fe3O4) nanoparticles. International Journal of Concrete Structures and Materials (2023), 17, 7. https://doi.org/10.1186/s40069-022-00568-y</p> <p>File 1 - X-ray diffractogram and particle size distribution (laser granulometry) data - *.opju (Origin)<br> File 2 - Rheological test results - *.opju (Origin)<br> File 5 - Mechanical peformance (early strength - ultrasounds and compressive strength) and density test results - *.opju (Origin)<br> File 4 - Mercury intrusion porosimetry test data - *.opju (Origin)</p>
(new version data) Probing the atomically diffuse interfaces in core-shell nanoparticles in three dimensions
<p><strong>Deciphering the three-dimensional atomic structure of solid-solid interfaces in core-shell nanomaterials is the key to understand their remarkable catalytical, optical and electronic properties. Here, we probe the three-dimensional atomic structures of palladium-platinum core-shell nanoparticles at the single-atom level using atomic resolution electron tomography. We successfully quantify the rich structural variety of core-shell nanoparticles with heteroepitaxy in 3D at atomic resolution. Instead of forming an atomically-sharp boundary, the core-shell interface is atomically diffuse with an average thickness of 4.2 Å, irrespective of the particle's morphology or crystallographic texture. We observed dissolved free Pd and Pt single atoms and sub-nanometer clusters using cryogenic electron microscopy. The high concentration of Pd in the diffusive interface is highly related to the free Pd atoms dissolved from the Pd seeds. These results advance our understanding of core-shell structures at the fundamental level, providing potential strategies into precise nanomaterial manipulation and chemical property regulation.</strong></p> <p> </p> <p>The data and source codes for the paper "Probing the atomically diffuse interfaces in core-shell nanoparticles in three dimensions" are posted below.</p> <p><strong># Repositary Contents</strong></p> <p><strong>### 1. Experiment Data</strong></p> <p>Folder: [Measured_data](./1_Measured_data)</p> <p>This folder contains denoised and aligned ADF-STEM projections and corresponding finalized tilt angles for three Pd@Pt core-shell nanoparticles. Three particles are named PB (pentagonal bipyramid shaped), EPB (elongated pentagonal bipyramid shaped) and TO (truncated octahedron shaped), respectively.</p> <p><strong>### 2. Reconstructed 3D Volume</strong></p> <p>Folder: [Final_reconstruction_volume](./2_Final_reconstruction_volume)</p> <p>This folder contains 3D tomographic reconstruction volumes of three particles. For the source code of RESIRE algorithm used in these reconstructions, please see the [source code](https://github.com/AET-MetallicGlass/Supplementary-Data-Codes/tree/master/2_RESIRE_package) of Yao Yang's paper on github.</p> <p><strong>### 3. Atom Tracing and Classification</strong></p> <p>Folder: [Tracing_and_classification](./3_Tracing_and_classification)</p> <p>This folder contains the source code to trace and classify atoms in the 3D volume.</p> <p><strong>### 4. Experimental Atomic Models</strong></p> <p>Folder: [Final_coordinates](./4_Final_coordinates)</p> <p>This folder contains the final coordinates of three nanoparticles.</p> <p><strong>### 5. Analysis of core-shell interface and others</strong></p> <p>Folder: [Analysis_of_interface](./5_Analysis_of_interface)</p> <p>This folder contains the codes to analyse the pair distribution function (PDF), the core-shell interface, the local coordination structure (PTM), the displacement and strain map of three nanoparticles.</p>
Suspension of Zinc Oxide Nanoparticles (ZnO-NP) as an Intraoperative Wound Irrigation to Prevent Infection After Fracture Fixation
<p>This was underlying data as part of the article "Suspension of Zinc Oxide Nanoparticles (ZnO-NP) as an Intraoperative Wound Irrigation to Prevent Infection After Fracture Fixation"</p>
Sensitized photon avalanche nanothermometry in Pr3+ and Yb3+ co-doped NaYF4 colloidal nanoparticles
<p>ABSTRACT</p> <p>Photon avalanche (PA) is a highly nonlinear luminescence phenomenon that occurs in lanthanide doped materials. PA exhibits a very steep power law relationship between luminescence intensity and the optical pump power. Due to the mechanism of PA emission, even weak perturbations to the energy looping and energy distribution within excited levels of lanthanide emitters are expected to significantly modify luminescent properties. Therefore, in this work, we experimentally study the impact of temperature (from – 175 to 175 °C, with 25 °C steps) on the sensitized PA emission in NaYF<sub>4</sub> nanoparticles co-doped with 15% of Yb<sup>3+</sup> and 0.5% of Pr<sup>3+</sup> ions under 852 nm pumping wavelength. Significant variations of the PA nonlinearity (<em>S</em> =&thinsp;4.5–9), PA gain (from 50 up to 175), and PA threshold (from 100 up to 700 kW/cm<sup>2</sup>) were observed under temperature rise from – 175 to 175 °C, respectively. The relative temperature sensitivities based on luminescence intensity changes were larger than 1.5% °C<sup>–1</sup> in the whole temperature range, reaching the maximal value of 7.5% °C<sup>–1</sup> at 0 °C. Moreover, a new thermometric parameter was proposed, namely, the PA pump power threshold, which exhibited over 0.5% °C<sup>–1</sup> relative sensitivities in the same wide temperature range. Owing to PA properties, the temperature sensitivity range and the corresponding relative sensitivities may be intentionally tuned by selecting the appropriate pump intensity in respect to the power dependence relationship. These studies not only provide a better understanding of fundamental processes and susceptibility of the sensitized photon avalanche emission to temperature variation, but also show the possibility of using PA materials as sensitive (nano)thermometers.</p>
Position Measurement of a Levitated Nanoparticle via Interference with Its Mirror Image
<p>Interferometric methods for detecting the motion of a levitated nanoparticle provide a route to the quantum ground state, but such methods are currently limited by mode mismatch between the reference beam and the dipolar field scattered by the particle. Here we demonstrate a self-interference method to detect the particle’s motion that solves this problem. A Paul trap confines a charged dielectric nanoparticle in high vacuum, and a mirror retro-reflects the scattered light. We measure the particle’s motion with a sensitivity of 1.7×10−12  m/√Hz, corresponding to a detection efficiency of 2.1%, with a numerical aperture of 0.18. As an application of this method, we cool the particle, via feedback, to temperatures below those achieved in the same setup using a standard position measurement.</p>
Raw SP-ICP-MS data for the publication "Vertical distribution of inorganic nanoparticles in a Norwegian fjord"
<p>The compressed archive contains SP-ICP-MS data to reproduce results for the paper "Vertical distribution of inorganic nanoparticles in a Norwegian fjord"". F4 in the sample name denotes the outer station, F2 denotes the inner station. The suffix integer (1-6) indicates the depth position, lowest numbers nearest bottom. The letter A denotes acidified sampling, N neutral sampling. The data consists of integer intensity versus time data in .csv-format.</p> <p>The remaining data to produce all other results, visualizations and statistics for the paper is included in the supplementary or GitHub. Associated code is deposited in a GitHub repository, github.com/arebruvold/fordefjorden_distribution. Note that these data may have different licenses:</p> <ul> <li>The excel file "total_metals.xlsx" contains the total metal data.</li> <li>"sjovann_partikler_noytral.xls" and "sjovann_minste_partikler_2.xls" contains quantitative SEM-EDS data.</li> <li>"204473_F4.txt" and "204473_F2.txt" contains CTD data for salinity and temperature.</li> <li>"dens_comps_large.csv" and "dens_comps_large.csv" contain the particle compositions used for particle size calculations.</li> </ul>
Data and code associated with the paper 'Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams'
<p>Data and code associated with the following paper: <a href="https://doi.org/10.1021/acs.nanolett.3c00561">V. Vento et al, Nano Lett. 2023</a></p> <p>A thorough explanation of the experiment performed is available there.</p> <p>The name of each sub-folder and file in <strong>Maps_data_code.zip</strong> indicates the corresponding figure number ("FIG #") and the type of content ("raw_data", "data", "plot", "analysis", "calculation", "simulation").</p> <p>The Raman maps data are analyzed through the script <em>Raman_maps_analysis.m</em>. The photoluminescence maps data in the supplementary information are analyzed through the script <em>PL_maps_analysis.m.</em> </p> <p>Used softwares: Matlab R2021a, Python 3.9, Comsol Multiphysics 5.6</p> <p> </p>
Data from: A novel strategy based on Zn(II) porphyrins and silver nanoparticles to photoinactivate Candida albicans
<p>Data supporting the figures presented in the research article "A novel strategy based on Zn(II) porphyrins and silver nanoparticles to photoinactivate <em>Candida albicans"</em></p> <p><strong>Background:</strong> Photodynamic inactivation (PDI) has been an attractive alternative to treat <em>Candida albicans</em> infections, especially considering the spread of resistant strains. The combination of the photophysical advantages of Zn(II) porphyrins (ZnPs) and the plasmonic effect of silver nanoparticles (AgNPs) has the potential to further improve PDI. In this context, this study aimed to evaluate PDI action in <em>C. albicans</em> using ZnTnHex-2-PyP<sup>4+</sup> or ZnTE-2-PyP<sup>4+</sup> associated with AgNPs. <strong>Methods:</strong> AgNPs stabilized with polyvinylpyrrolidone (PVP) were chosen to allow for (i) overlap between NP extinction and ZnP absorption spectra and (ii) favor AgNPs-ZnPs contact; prerequisites for exploring the plasmonic effect. Optical and zeta potential (ζ) characterizations were performed, and ROS generation was also evaluated. Yeasts were incubated with ZnPs alone or in combination with AgNPs (AgNPs-ZnPs systems), at various concentrations of ZnPs and two proportions of AgNPs, then irradiated with a blue LED. Interactions between yeasts and the systems (ZnP alone or AgNPs-ZnPs) were evaluated by fluorescence microscopy. <strong>Results:</strong> Subtle spectroscopic changes were observed for ZnPs after association with AgNPs, and the ζ analyses confirmed AgNPs-ZnPs interaction. PDI using ZnP-hexyl (0.8 µM) and ZnP-ethyl (5.0 µM) promoted a 3 and 2 log<sub>10</sub> reduction of yeasts, respectively. On the other hand, AgNPs-ZnP-hexyl (0.2 µM) and AgNPs-ZnP-ethyl (0.6 µM) systems led to complete fungal eradication under the same parameters and lower porphyrin concentrations. An increase in the ROS level was observed when ZnPs were associated with AgNPs. Enhanced interaction of yeasts with AgNPs-ZnPs was observed, when compared with ZnPs alone. <strong>Conclusion:</strong> We hypothesize that the plasmonic effect combined with the greater interactions between cells and AgNPs-ZnPs systems resulted in an efficient and improved <em>C. albicans</em> yeast PDI, encouraging further developments toward inactivation of resistant <em>Candida</em> spp.</p> <p> </p>
Data for "Beyond Magic Numbers: Atomic Scale Equilibrium Nanoparticle Shapes for Any Size"
<p>This record contains <a href="https://wiki.fysik.dtu.dk/ase/ase/db/db.html">ASE databases</a> in sqlite format that contain the minimum energy structures of nanoparticles of Ag, Au, Cu, and Pd as determined in the paper "<em>Beyond Magic Numbers: Atomic Scale Equilibrium Nanoparticle Shapes for Any Size</em>", Rahm and Erhart, Nano Letters <strong>17</strong>, 5775 (2017); <a href="http://doi.org/10.1021/acs.nanolett.7b02761">doi: 10.1021/acs.nanolett.7b02761</a></p> <p>The <code>access-database.py</code> script included in this record demonstrates how to access the databases. It requires the <a href="https://wiki.fysik.dtu.dk/ase/">ASE package</a> to be installed.</p>
Supporting data for "Detection of single ions in a nanoparticle coupled to a fiber cavity"
<p>Data for Fig. 2b, 2d, 3 and 4 of the paper "Detection of single ions in a nanoparticle coupled to a fiber cavity"</p>
Raw data for the plot in the article entitled "Electrophoretic assembly and electronic transport properties of rapidly synthesized Sb2Te3 nanoparticles"
<p>data plotted in the article in csv format</p>
Mechanically recyclable melt-spun fibers from lignin esters and iron oxide nanoparticles: towards circular lignin materials
<p>Source data for the article:</p> <p>Mechanically recyclable melt-spun fibers from lignin esters and iron oxide nanoparticles: towards circular lignin materials<a href="https://pubs.rsc.org/en/content/articlelanding/2023/gc/d3gc02381h#fn1">†</a></p> <p><a href="https://pubs.rsc.org/en/results?searchtext=Author%3AUnnimaya%20Thalakkale%20Veettil">Unnimaya Thalakkale Veettil</a>, <sup><em>a</em></sup> <a href="https://pubs.rsc.org/en/results?searchtext=Author%3AAdrian%20Moreno">Adrian Moreno</a>, <a href="https://pubs.rsc.org/en/content/articlelanding/2023/gc/d3gc02381h#fn2">‡</a><sup><em>a</em></sup> <a href="https://pubs.rsc.org/en/results?searchtext=Author%3AAlberto%20J.%20Huertas-Alonso">Alberto J. Huertas-Alonso</a>, <sup><em>a</em></sup> <a href="https://pubs.rsc.org/en/results?searchtext=Author%3AMohammad%20Morsali">Mohammad Morsali</a>, <sup><em>ab</em></sup> <a href="https://pubs.rsc.org/en/results?searchtext=Author%3AIevgen%20V.%20Pylypchuk">Ievgen V. Pylypchuk</a>, <sup><em>a</em></sup> <a href="https://pubs.rsc.org/en/results?searchtext=Author%3ALi-Yang%20Liu">Li-Yang Liu</a> <sup><em>a</em></sup> and <a href="https://pubs.rsc.org/en/results?searchtext=Author%3AMika%20H.%20Sipponen">Mika H. Sipponen</a> *<sup><em>ab</em></sup></p> <p>Green Chemistry</p> <p><a href="https://doi.org/10.1039/D3GC02381H">https://doi.org/10.1039/D3GC02381H</a></p>
Enzyme-like nanoparticle engineered-mesenchymal stem cell secreting HGF promotes visualized therapy for idiopathic pulmonary fibrosis in vivo
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Supporting data and software for: Low-temperature open-air synthesis of PVP-coated NaYF4:Yb,Er,Mn upconversion nanoparticles with strong red emission
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Safer and efficient base editing and prime editing via ribonucleoproteins delivered through optimized lipid-nanoparticle formulations
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Segmented high-resolution transmission electron microscopy images of nanoparticles
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.