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154 results for “colloids”
Seasonal concentrations and fluxes of dissolved, soluble, and colloidal Fe and dissolved organic matter amount and composition (DOC and PARAFAC)
<p>These datasets accompany the following manuscript:</p> <p>Logozzo, L.A.*, Hosen, J.D., McArthur, J., and Raymond, P.A. Distinct drivers of two size fractions of operationally dissolved Fe in a temperate river. Limnology and Oceanography.</p> <p>*Corresponding Author: Laura A. Logozzo, laura.logozzo@uleth.ca</p> <p>Datasets:</p> <p>1- Fe-DOM-EMMA-merged.xlsx: this dataset includes operationally dissolved (<0.22 µm), colloidal (0.02-0.22 µm), and soluble (<0.02 µm) DOC concentrations, total Fe concentrations, PARAFAC component scores <0.22 µm, and end-member mixing model scores <0.22 µm. Samples were collected approximately bi-weekly from the Connecticut River at Thompsonville from April 2018 to March 2020.</p> <p>2- Loadest-merged.xlsx: this dataset includes LOADEST-modeled daily-average and monthly-average fluxes of operationally dissolved (<0.22 µm), colloidal (0.02-0.22 µm), and soluble (<0.02 µm) Fe, DOC <0.22 µm, and allochthonous-like DOC <0.22 µm.</p> <p>All methodology is described in the accompanied manuscript.</p>
Data for "An amorphous phase precedes crystallization: unraveling the colloidal synthesis of zirconium oxide nanocrystals."
<p>Data underlying the figures in the publication "An amorphous phase precedes crystallization: unraveling the colloidal synthesis of zirconium oxide nanocrystals" published in ACS Nano: <a href="https://doi.org/10.1021/acsnano.3c02149">https://doi.org/10.1021/acsnano.3c02149</a></p> <p>The <em>.pxp</em> documents contain the experimental data of the figures in the manuscript and they can be opened/edited with the software IGOR Pro 8.0 or higher. For Figure 2a-d there are .txt files available.</p>
Data compilation for "Label-free Imaging of Catalytic H2O2 Decomposition on Single Colloidal Pt Nanoparticles using Nanofluidic Scattering Microscopy"
<p>Data compilation for "Label-free Imaging of Catalytic H2O2 Decomposition on Single Colloidal Pt Nanoparticles using Nanofluidic Scattering Microscopy"</p> <p>This data set contains raw and evaluated data for the publication mentioned above and is structured into three parts which are packed as .zip files. The file labeled with MAIN 1 contains data for the figures 1 to 3 and MAIN 2 for figures 4 to 6 of the main manuscript. The file labeled with SI contains all data related to the supplementary information.</p> <p>The data itself has three main types. There are .tif images which contain the raw darkfield microscopy images, usually as image stack of several single pictures. Some of these .tif images have been processed according to the description in the publication and single frames exported as .png images.<br> The .xlsx files contain the evaluated data that has been extracted from the microscopic images and was used to draw the corresponding graphs in the publication. The individual tables and the respective columns/rows have a basic labeling identifying their contents.<br> In addition, the data set also contains SEM/TEM images that show mainly the platinum particles used in the experiments. There is also one Comsol simulation for the flow in a nanochannel that is being filled with a bubble, which was created with Comsol 5.5.</p>
Effect of Goal-directed Crystalloid Versus Colloid Administration on Major Postoperative Morbidity
ClinicalTrials.gov study NCT01195883. IPD Sharing: NO. Countries: 2. Publications: 1.
Colloids in Pediatric Cardiac Surgery: Comparison Between a Balanced and a Non-balanced Colloid
ClinicalTrials.gov study NCT02584868. IPD Sharing: Not stated. Countries: 1. Publications: 1.
The Effectiveness of Topical Silver Colloid in Treating Patients With Recalcitrant Chronic Rhinosinusitis
ClinicalTrials.gov study NCT02403479. IPD Sharing: NO. Countries: 1. Publications: 1.
Supplemental information and Data for: Colloidal physics modeling reveals how per-ribosome productivity increases with growth rate in E. coli
Open the record for dataset details and reuse information.
Fluorescence properties of self assembled colloidal supraparticles from CdSe/CdS/ZnS nanocrystals
<p>Raw data of figures 2-6</p>
Data for "Plane-wave approach to the exact van der Waals interaction for colloid particles"
<p>The data represented in figures 2 to 7 of the publication "Plane-wave approach to the exact van der Waals interaction for colloid particles" are provided in the CSV file format. For each (sub)figure there is a separate file, which is named after that (sub)figure. In those files, the first column refers to the x-values and the other columns to the y-values of the curves depicted in the corresponding (sub)figure. More information can be found in the header of the files.</p> <p>The subfolder "water_zwol" contains the data corresponding to figures 4 to 7 computed with an alternative dielectric function for water as given by van Zwol <em>et al. </em>(c.f. Ref. 74 in the publication) at a slightly different temperature of 293 K.</p>
Variational Design Principles For Nonequilibrium Colloidal Assembly
<p>Data required to reproduce plotted figures in arXiv preprint: arXiv:2011.10592 (2020)</p>
Architecture Controls Phonon Propagation in All-Solid Brush Colloid Metamaterials - datasets
<p>Data sets to figures in the publication https://doi.org/10.1002/smll.202304157</p> <p>Fig1 - a) Experimental dispersion plot for close-packed PS particles (diameter <em>d</em> = 307 nm) infiltrated in PDMS (red filled circles), and silica (SiO<sub>2</sub>)-PS GNP assembly (square symbols, <em>d</em> = 214 nm) with the empty symbols denoting the dispersionless, highly localized, rotational mode originating from dipole torsional modes of the individual particles; the wavenumber is normalized with respect to <em>q</em><sub>BZ</sub> along ΓM direction. Calculated band structure along the [111] fcc high-symmetry direction for the PS opal infiltrated in (fluid) PDMS b) and for the DP980 colloidal crystal c) assuming respectively PBCs and IBCs (<em>k<sub>T</sub></em> = 0.021 GPa nm<sup>−1</sup>). Solid lines: longitudinal bands in (b) and non-degenerate bands including inactive bands in (c); dotted lines: quasi-flat (highly localized) band originating from dipole torsional modes (see main text). Shaded regions denote hybridization gaps of dipole-resonance origin (LHG for longitudinal modes; HG for all modes). The horizontal red arrow in (b) indicates the position of the quadrupolar resonant frequency of the individual PS sphere in PDMS. Note that only non-degenerate bands that correspond to longitudinal phonons are shown (we have omitted transverse phonon modes since they were not observed experimentally in Figure 1a).</p> <p> </p> <p> </p> <p>Fig 2- Top panel: experimental BLS spectra of three PS tethered SiO<sub>2</sub> nanoparticle GNP films with different grafting densities, DP1300 (σ = 0.53nm<sup>−2</sup> in (a)), DP530 (σ = 0.27nm<sup>−2</sup> in (b)) and DP1170 (<em>σ</em> = 0.08 nm<sup>−2</sup> in (c)) at a wave vector <em>q</em> (arrows in (d–f)) where a hybridization gap (HG, patterned areas in (d–f)) opens in the dispersion diagrams in (d–f)). The spectra are recorded with VV (black) and VH (grey) polarizations. The isotropic spectra obtained from the subtraction of the VH (depolarized) from the experimental polarized (VV) spectra are represented by Lorentzian lines (red). Bottom panel: experimental dispersion relations of the three systems in (a–c) and their optical images as insets in (d–f). The frequency is obtained from the isotropic spectra recorded at different <em>q's</em>. The direction of <em>q</em> is selected in the transmission and reflection (grey-shaded area) geometries and the magnitude of <em>q</em> is tuned by changing the scattering angle. The HGs denoted by patterned area are clearly observed in each system. The open circles represent the localized mode with <em>q</em>-independent frequency denoted by arrows. The effective medium acoustic modes are represented by red lines in the low-<em>q</em> regime. Note the dip in the BLS intensity at the frequency inside the gap (minimum DOS)</p> <p> </p> <p>Fig3 - Dispersion relation of a) DP1300 and b) DP1170 swollen with 20 wt.% DMP (solid symbols). For comparison, the phonon dispersion in the pristine GNP films (open symbols) is shown in (a,b). The black and red lines denote the low-frequency acoustic regime of DP1170 and plasticized DP1170, while the blue and black dashed lines are to guide the eyes. The vertical arrows indicate the position of the HG indicated by the hatched and shaded areas, whereas the horizontal lines with arrows indicate the frequency <em>f</em><sub>LO</sub> of the flat mode. Insets: Experimental VV (blue) and VH (grey) for the two plasticized samples and optical images of DP1300 with 20% DMP in (a). The isotropic spectra obtained from the subtraction of the VH (depolarized) from the polarized (VV) spectra are represented by Lorentzian lines (red) as in Figure <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202304157#smll202304157-fig-0002">2a,c</a>.</p> <p> </p> <p> </p> <p>Fig4-Theoretical band diagram of the a–c) sparsely DP1170 (<em>d</em> = 140 nm) and d–f) densely grafted DP1300 (<em>d</em> = 225 nm) considering PBCs with bulk PS sound velocities ( m s<sup>−1</sup>, m s<sup>−1</sup>) along [111] (left column, plots (a,d)), and, IBCs along [111] (middle column, plots (b,e)) and [112] (right column, plots (c,f)); the parameters used for the calculations are: <em>k</em><sub>L</sub> = 1.16 GPa nm<sup>−1</sup>, <em>k</em><sub>T</sub> = 0.20 GPa nm<sup>−1</sup>) with higher than bulk PS sound velocities ( , ), for DP1170 (plots b,c) and <em>k</em><sub>L</sub> = 0.615 GPa nm<sup>−1</sup>, <em>k</em><sub>T</sub> = 0.030 GPa nm<sup>−1</sup> with bulk PS sound velocities for DP1300 (plots (e,f)). Solid and open circles indicate the experimental points. Hatched regions denote hybridization gaps (LHG for longitudinal modes; HG for all modes). Along the high symmetry line ΓL of the fcc Brillouin zone (BZ), dark/light solid and dotted blue lines denote non-degenerate (longitudinal, i.e., of Λ<sub>1</sub> symmetry), doubly-degenerated (transverse, i.e., of Λ<sub>3</sub> symmetry) and deaf (i.e., of Λ<sub>2</sub> symmetry) computed bands, respectively. Along [112] that includes the low symmetry line ΓM of the fcc BZ all bands are non-degenerate of mixed character. The position of the flat band of dipole torsional origin is indicated by a red arrow.</p> <p> </p> <p> </p> <p>Fig5 - a) Evolution of the effective medium slope for the different colloidal SiO<sub>2</sub>-PS GNP assemblies (filled symbols, left axis) and of the enhanced transverse velocity ratio for PS (open symbols, right axis) as a function of the interparticle distance, <em>d</em> = <em>d</em><sub>cal</sub> (Table <a title="Link to table" href="https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202304157#smll202304157-tbl-0001">1</a>), showing a non-linear decay with increasing PS filling fraction (dashed curve is a guide to the eye). b) Redshifted variation of the localized-mode frequency, <em>f</em><sub>LO</sub>, for the GNP colloids with increasing distance <em>d</em>. Blue dotted line denotes the flat mode frequency for a fcc crystal calculated along ΓL (taken at the middle of the BZ) assuming PBCs and bulk velocities for PS; solid gray line: interpolated curve for the various samples. c) Power-law variation of the localized-mode frequency with the tangential stiffness <em>k<sub>T</sub></em>. d) The tangential stiffness <em>k<sub>T</sub></em> as a function of the crowding parameter for the DP1170, DP530 and DP1300 with decreasing <em>σ</em>. In (b,c), all scales are logarithmic, symbols are color-indexed with the grafting-chain density value of the corresponding labeled samples.</p>
Data for the manuscript "Direct visualization of colloid transport over natural heterogeneous and artificial smooth rock surfaces"
<p>The files contain the data used to produce the figures in the manuscript "<strong>Direct visualization of colloid transport over natural heterogeneous and artificial smooth rock surfaces</strong>" by Borgman, Be'er, and Weisbrod.</p> <p>Included in the data set:</p> <ol> <li>ImageAnalysesAndPlots.m: A MATLAB script to generate the figures from the included images and data files.</li> <li>myCmap.mat: A custom set of colors for the images.</li> <li>LH_btc.csv, LH_b_btc.csv, HH_btc.csv, HH_b_btc.csv: Data for the breakthrough curves.</li> <li>LH_t=360min.czi, HH_t=300min.czi: Final images from the experiments, from which the residual surface fluorescence is calculated.</li> <li>LHSurfTopo.csv, HHSurfTopo.csv: Tables containing the profilometer scan data.</li> <li>LH, HH: Folders containing the images for the colloid displacement front</li> <li>Exp01-Exp04: Images for calculating the dispersion coefficient </li> <li>PlotVelocities2.m: A script for plotting the calculated velocity fields</li> <li>velocity_magnitude_HH_flux_boundary.txt/velocity_magnitude_LH_flux_boundary.txt: The data files for the velocity fields.</li> </ol> <p>For the .czi files, it's necessary to use the Bio-Formats for MATLAB <a href="https://docs.openmicroscopy.org/bio-formats/6.1.0/users/matlab/index.html">package</a>.</p>
Data from: Nanoaperture fabrication via colloidal lithography for single molecule fluorescence analysis
<p>In single molecule fluorescence studies, background emission from labeled substrates often restricts their concentrations to non-physiological nanomolar values. One approach to address this challenge is the use of zero-mode waveguides (ZMWs), nanoscale holes in a thin metal film that physically and optically confine the observation volume allowing much higher concentrations of fluorescent substrates. Standard fabrication of ZMWs utilizes slow and costly E-beam nano-lithography. Herein, ZMWs are made using a self-assembled mask of polystyrene microspheres, enabling fabrication of thousands of ZMWs in parallel without sophisticated equipment. Polystyrene 1 μm dia. microbeads self-assemble on a glass slide into a hexagonal array, forming a mask for the deposition of metallic posts in the inter-bead interstices. The width of those interstices (and subsequent posts) is adjusted within 100–300 nm by partially fusing the beads at the polystyrene glass transition temperature. The beads are dissolved in toluene, aluminum or gold cladding is deposited around the posts, and those are dissolved, leaving behind an array ZMWs. Parameter optimization and the performance of the ZMWs are presented. By using colloidal self-assembly, typical laboratories can make use of sub-wavelength ZMW technology avoiding the availability and expense of sophisticated clean-room environments and equipment.</p>
On the effect of morphology and particle-wall interaction on colloidal near-wall dynamics
<p><strong>Related publication:</strong><br> J. A. Rivera-Morán, Y. Liu, S. Monter, C. Hsu, P. Ruckdeschel, M. Retsch, M. K. Lisicki and P. R. Lang. On the effect of morphology and particle-wall interaction on colloidal near-wall dynamics. <em>Soft Matter</em> 2021.<br> DOI: <a href="https://doi.org/10.1039/D1SM01191J">https://doi.org/10.1039/D1SM01191J</a></p> <p><strong>EUSMI proposal code:</strong><br> E190800323</p> <p>We investigated the near-wall Brownian dynamics of different types of colloidal particles with a typical size in the 100 nm range using evanescent wave dynamic light scattering (EWDLS). In detail we studied dilute suspensions of silica spheres and shells with a smooth surface and silica particles with controlled surface roughness. While the near wall dynamics of the particle with smooth surface differ only slightly from the theoretical prediction for hard spheres colloids, the rough particles diffuse significantly slower. We analysed the experimental data by comparison with model calculations and suggest that the deviating dynamics of the rough particles are not due to increased hydrodynamic interaction with the wall. Rather, the particle roughness significantly changes their DLVO interaction with the wall, which in turn effects their diffusion.</p>
A Robotic Platform for Synthesis of Colloidal Nanocrystals
<p>Code, algorithm, and data are available to generate results that are reported in the paper and central to the main claims.</p> <p>1. Code and README for data mining of synthesis parameters.</p> <p>2. Code for reading in situ color characterization results.</p> <p>3. Code, README and figure drawing (an example) of ML prediction by SISSO.</p> <p> </p>
Robust full-spectral color tuning of photonic colloids
<p><strong>Research Data supporting “</strong><strong>Robust full-spectral color tuning of photonic colloids</strong><strong>”</strong></p> <p>Andrea Dodero, Kenza Djeghdi, Viola Bauernfeind, Martino Airoldi, Bodo D. Wilts, Christoph Weder, Ullrich Steiner, Ilja Gunkel</p> <p><strong><em>Small</em></strong>, DOI: <a href="https://doi.org/10.1002/smll.202205438">10.1002/smll.202205438</a></p> <p>The data are arranged into different folders, containing the following files (.txt, .tif, .xlxs, etc). These data should be read in conjunction with the manuscript and “Supporting Info”, both of which may be found at the following DOI: <a href="https://doi.org/10.1002/smll.202205438">10.1002/smll.202205438</a></p>
Experimental Data for: Machine learning enabled image analysis of time-temperature sensing colloidal arrays
<p>This dataset contains images of colloidal arrays functioning as time-temperature integrating, autonomous sensors. Each image shows a sensor consisting of multiple colloidal crystals with varying compositions of particles with different glass transition temperatures. Details on the composition and manufacturing procedures are explained in the corresponding publication. The data is organized into folders with different temperature setpoints. For each temperature, we investigated 10 samples. The name of the samples corresponds to their creation date. The name of the image files corresponds to their acquisition time. The first image in each sample folder was taken at the very start of the heating period. Hence, the heating time can be calculated by subtracting the start time from the acquisition time.</p>
Spectral data associated to the publication: "VIS spectroscopy of NaCl - water ice mixtures irradiated with 1 and 5 keV electrons under Europa's conditions: Formation of colour centres and Na colloids " by R. Cerubini et al. (Icarus 379, 2022)
<p>This is the complete set of experimental VIS reflectance data collected by R. Cerubini and co-authors for the article "VIS spectroscopy of NaCl - water ice mixtures irradiated with 1 and 5 keV electrons under Europa's conditions: Formation of colour centres and Na colloids" published in Icarus 379 (2022). doi: https://doi.org/10.1016/j.icarus.2022.114977.</p> <p>The article itself is published in open-access and provides the methodology for the spectral aquisitions, discussion of the errors and uncertainties, analysis of the spectra and implications for the composition of Solar System surfaces.</p> <p>The data are contained in ASCII files (columns separated by comma). The first column is the wavelength (in micrometers) and the other columns contain the reflectance data (in unit of reflectance factor). The different compositions are indicated in the filenames and correspond directly to the figures in the published paper.</p> <p> </p>
Data: Thermophoretic microfluidic cells for evaluating Soret coefficient of colloidal particles
<p>Data, which are presented in the following publication: Lee, Namkyu; Mohanakumar, Shilpa; Wiegand, Simone (2022): Thermophoretic microfluidic cells for evaluating Soret coefficient of colloidal particles. In: Int J Heat Mass Tran 194, S. 123002. DOI: 10.1016/j.ijheatmasstransfer.2022.123002.</p>
Effects of hyporheic exchange and settlement on the particle size distribution of colloids
<p>The files refer to the data set files used in the manuscript (txt and ew format), and the matlab files (mat and m format).</p>
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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.