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123 results for “room temperature”
Data from: Preparation of Pt and bamboo charcoal co-modified TiO2 for formaldehyde sensing at room temperature
<p>Anatase TiO<sub>2</sub> has evolved to be one of the most attractive materials for gas sensing due to its strong oxidation activity and excellent sensing properties. In this study, we prepared a Pt and bamboo charcoal co-modified nano-TiO<sub>2</sub> using one-pot hydrothermal process and applied it for detection of formaldehyde. The successful incorporation of precious metal Pt and bamboo charcoal onto TiO<sub>2</sub> was confirmed by SEM, TEM, EDS, XRD, and XPS. These modifiers significantly improved the response of TiO<sub>2</sub> to formaldehyde, e.g., the response signal increased by 4 times, while the response time decreased from 91.05 to 67.76 s. The sample with 0.5@Pt and 0.5@C bamboo charcoal performed the best. Our work showed the potential of using biomass-derived carbon to improve the detection of formaldehyde.</p>
Resistive switching suppression in metal/Nb:SrTiO3 Schottky contacts prepared by room-temperature Pulsed Laser Deposition
<p>Datafiles of the article "Resistive switching suppression in metal/Nb:SrTiO<sub>3</sub> Schottky contacts prepared by room-temperature pulsed laser deposition".</p>
Room-temperature Quantum Nanoplasmonic Coherent Perfect Absorption
<p>Research data for the article <em>Room-temperature Quantum Nanoplasmonic Coherent Perfect Absorption</em>, to be published in <em>Nature Communications</em>.</p>
Data collection that describes the calibration of the temporal and displacement characteristics of an optical tweezers in buffered saline at room temperature.
<p><strong>Introduction</strong>. This data provides the calibration of an optical tweezers within the linear Hookian region. Once the laser was aligned, the power at the objective measured and a bead trapped the instrument was calibrated. <strong>Data Collection</strong>. Calibration was performed by moving a trapped bead by supplying a periodic square wave train input (amplitude: −800 to +800 nm, period: 80 ms) to an acousto-optical device, AOD and monitoring the trajectory of the bead in the 𝑋𝑌 plane with a quadrant photo diode, QPD for ~ one minute. Data was collected at 200 kHz from three (3) QPD channels: displacement in the 𝑋 (∆𝑋<sub>𝑀</sub>) (i) and 𝑌 directions (∆𝑌<sub>𝑀</sub>) (ii) and the sum of the fluorescent intensity (∑<sub>𝐿</sub>) (iii). Typically, each bead was stimulated with a train of square waves of constant amplitude in the 𝑋 direction. This stimulation was performed four (4) times at each of the different amplitudes i.e., −800, +800, −500, and +500 nm. The QPD signal in the dark, ∆𝑋<sub>𝐷</sub>, ∆𝑌<sub>𝐷</sub>, ∑<sub>𝐷</sub> was recorded and subtracted in real time, and the gain, 𝐺 of the QPD noted. The Stokes-Faxen coefficient, 𝛽 was calculated having recorded the height of the bead above the Petri dish, ℎ and the viscosity, 𝜂 of the saline solution. The detected fluorescent bead was excited either with a Xenon lamp or TLED transmitted light source. Some calibrations were performed with a TLED light that was borrowed from the manufacturer for testing, and the signal to noise of these measurements was significantly decreased.<strong> Data Transformation</strong>. For each of the two (2) channels the measured signal was normalized by the sum, and the ~750 waves were averaged for each pulse train stimulus. The reciprocal of the time constant (s<sup>-1</sup>) was determined from the exponential rise or decay of the back-ground subtracted averaged response. Spring constant (pN/nm) was determined from the product of this reciprocal time constant and the Stokes-Faxen coefficient (pNs/nm). The net displacement of the bead (nm) was calculated by determining the resultant vector of the 𝑋 and 𝑌 components of the QPD (V/V). For the four (4) stimuli determined for each bead the normalized displacement (V/V) was plotted as a function of net bead displacement and the slope (V/V/nm) calculated from best linear fit. For each calibration the mean spring constant, reciprocal time constant, and mean slope are provided. <strong>Data Format</strong>. The data was saved in LabView with the proprietary TDMS format (National Instruments, NI, Austin, TX). It was transformed to a text file and imported into MATLAB (The Mathworks, Natick, MA) and stored as struct and analyzed with a Python script. The collection contains raw and transformed results from 69 days for a total 153 beads. The data is provided with annotated descriptions in HDF5, a standard non-proprietary container storage format. Each file is about 1.1 GBs (HDF5).</p> <p> </p> <p>The package contains:</p> <p>1. Standard Container HDF5 with custom organization format of data with annotations.</p> <p>2. Python Script (calibrateopticaltweezers.py file) that describes how data is analyzed and written to HDF5 and .MAT formats. (1 file)<br> </p>
Increased room temperature ferromagnetism in Co-doped tetrahedral perovskite niobates
<p>Dilute magnetic semiconductors (DMSs), such as (In, Mn)As and (Ga, Mn)As prototypes, are limited to III–V semiconductors with Curie temperatures (<i>T</i><sub>c</sub>) far from room temperature, thereby hindering their wide application. Here, one kind of DMS based on perovskite niobates is reported. BaM<sub>x</sub>Nb<sub>(1-x)</sub>O<sub>3-δ</sub> (M=Fe, Co) powders are prepared by the composite-hydroxide-mediated method. The addition of M elements endows BaM<sub>x</sub>Nb<sub>(1-x)</sub>O<sub>3-δ</sub> with local ferromagnetism. The tetragonal BaCo<sub>x</sub>Nb<sub>(1-x)</sub>O<sub>3-δ</sub> nanocrystals can be obtained by Co doping, which shows strong saturation magnetization(<i>M</i><sub>sat</sub>) of 2.22 emu/g, a remnant magnetization(<i>M</i><sub>r</sub>) of 0.084 emu/g, and a small coercive field(<i>H</i><sub>c</sub>) of 167.02 Oe at room temperature. The ab initio calculations indicate that Co doping could lead to a 64% local spin polarization at the Fermi level(E<sub>F</sub>) with net spin DOS of 0.89 electrons·eV<sup>-1</sup>, this result shows the possibility of maintaining strong ferromagnetism at room temperature. In addition, the trade-off effect between the defect band absorption and ferromagnetic properties of BaM<sub>x</sub>Nb<sub>(1-x)</sub>O<sub>3-δ</sub> is verified experimentally and theoretically.</p>
Infrared spectra of pyroxenes (crystalline chain silicates) at room temperature
<p>PYROXENE SPECTRA from Bowey, J. E., Hofmeister, A., Keppel, E. 2020 MNRAS, 497, 3658<br> Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature<br> https://doi.org/10.1093/mnras/staa2227</p> <p>We present quantitative room-temperature spectra of 17 Mg-, Fe-, and Ca-bearing ortho- and clinopyroxenes, and a Ca-pyroxenoid in order to discern trends indicative of crystal structure and a wide range of composition. Data are produced using a diamond anvil cell: our band strengths are up to six times higher than those measured in KBr or polyethylene dispersions, which include variations in path length (from grain size) and surface reflections that are not addressed in data processing.</p> <p>This is the README.txt file in the upload.</p> <p>Data doi is : 10.5281/zenodo.5564539</p> <p>PYROXENE SPECTRA from Bowey, J. E., Hofmeister, A., Keppel, E. 2020 MNRAS, 497, 3658<br> Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature<br> https://doi.org/10.1093/mnras/staa2227</p> <p>Spectra are in Figure 4 and compositions are listed in Table 1.</p> <p>Fig 4 Left: En-Fs orthopyroxenes (orthoplot.pdf) </p> <p>En99tau.dat<br> En92tau.dat<br> En90tau.dat<br> En85tau.dat (lower resolution MID-ir spectrum)<br> En55tau.dat<br> En40tau.dat<br> En12tau.dat<br> En1tau.dat</p> <p>Pigeonite: Wo10En62tau.dat</p> <p>Right: Clinopyroxenes in the Enstatite-Diopside-Wollastonite<br> Diopside-Hedenbergite solid-solution series (enst-wol.pdf)</p> <p>En-Dp series.</p> <p>Wo21En79tau.dat<br> Wo30En70tau.dat<br> Wo40En60tau.dat</p> <p>Wollastonite: Wo99En1tau.dat</p> <p>Dp-Hd series</p> <p>Wo50En50tau.dat<br> Wo50En47tau.dat<br> Wo49En36tau.dat<br> Wo47En6tau.dat</p> <p>Pigeonite: Wo36En37tau.dat</p> <p> </p> <p>files are two column ascii. column 1 increment varies between files.</p> <p>column 1 (x) is in increasing wavenumber (cm^-1)<br> column 2 (tau) is absorbance in optical depth units per micron thickness<br> of sample.</p> <p>col1: x to wavelength (micron) conversion is 10^4/x</p> <p>col2: tau to mass absorption coefficient conversion (kappa) is tau *<br> 10^4/rho where rho is the mass density of the specimen (gcm^-3),<br> estimates are in table 1 [Note that kappa contains inherent<br> uncertainties due to the spacing between the grains sampled and<br> the effects discussed in Section 7.1]</p>
Data repository for "Phonon-mediated room-temperature quantum Hall transport in graphene"
<p>This is the data presented in the manuscript "Phonon-mediated room-temperature quantum Hall transport in graphene", Nat Commun 14, 318 (2023). https://doi.org/10.1038/s41467-023-35986-3</p>
Stability of oral and faecal microbiome at room temperature: impact on diversity
<p>When collecting oral and faecal samples for large epidemiological microbiome studies, optimal storage conditions such as immediate freezing, are not always feasible. It is fundamental to study the impact of temporary room temperature (RT) storage and shipping on the microbiome diversity obtained in different types of samples. We performed a pilot study aimed to validate the sampling protocol based on the viability of the 16S rRNA gene sequencing in microbiome samples.</p> <p>Faecal and oral samples from five participants were collected and preserved in different conditions: i) 70% ethanol; ii) in a FIT tube for stool samples; and iii) in a chlorhexidine solution for oral wash samples. Four aliquots were prepared per sample, which were stored at RT, and frozen at days 0, 5, 10 and 15, respectively.</p>
Data for the publication "In Situ Observation of Room-Temperature Magnesium Metal Deposition on a NASICON/IL Hybrid Solid Electrolyte"
<p>Datasets are obtained from X-ray diffraction (XRD), Rietveld analysis, Scanning electron microscopy (SEM), Electrochemicla impedance spectroscopy (EIS), Nudged Elastic Band (NEB), Chronopotentiometry (CP), Linear sweep voltammetry (LSV), X-ray photoelectron spectroscopy (XPS), Energy-dispersive X-ray spectroscopy (EDS).</p> <p><strong>Abstract:</strong> Secondary batteries using multivalent cations as ionic charge carriers have attracted increasing attention in recent years due to the high theoretical energy density provided by multi-electron redox reactions. However, the high charge density of these cations inevitably leads to sluggish kinetics of ion migration at room temperature, which poses a challenge for the development of solid-state batteries using multivalent ions. Here, we prepared a magnesium ion conducting hybrid solid electrolyte (HSE) consisting of a new NASICON-structured material, Mg0.5Sn2(PO4)3, and a small amount of Mg ionic liquid. The HSE shows superior room-temperature ionic conductivity of 1.11 · 10−4 S cm−1 and an activation energy of 0.36 eV. Due to good compatibility of the HSE with the magnesium metal anode, symmetric MgǀHSE|Mg cells show stable Mg plating and stripping behavior at room temperature. Using in situ electrochemical scanning electron microscopy measurements the room temperature growth-induced fracture of the HSE was observed, giving unequivocal evidence for magnesium deposition. These results may serve as starting point for understanding the magnesium deposition mechanism on solid electrolyte in solid-state batteries.</p>
Warm Water Versus Room Temperature Water Immersion Colonoscopy
ClinicalTrials.gov study NCT01582178. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Cool vs Room-temperature Artificial Tears
ClinicalTrials.gov study NCT05832996. IPD Sharing: Not stated. Countries: 1. Publications: 20.
Increased room temperature ferromagnetism in Co-doped tetrahedral perovskite niobates
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Room-temperature persistent photoconductivity of KTaO<sub>3</sub>
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Data from: Preparation of Pt and bamboo charcoal co-modified TiO2 for formaldehyde sensing at room temperature
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Room-temperature quantum coherence of entangled multiexcitons in a metal-organic framework
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Data from: Field-free deterministic switching of all-van der Waals spin-orbit torque system above room temperature
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Data from: Ultrafast, all-optical coherence of molecular electron spins in room-temperature, water solution
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Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
<p>A dye-sensitized solar cell was solvated by RTILs; using optimized empirical potentials, a molecular dynamics simulation was applied to compute vibrational properties. The obtained vibrational spectra were compared with experiment and ab initio molecular dynamics; various empirical potential spectra show how partial-charge charge parameterization of the ionic liquid affects vibrational spectra prediction.</p>
Data for M. Kędziora, et al. "Predesigned perovskite crystal waveguides for room temperature exciton-polariton condensation and edge-lasing". Nature Materials.
<p>The repository contains data to generate figures from "Predesigned perovskite crystal waveguides for room temperature exciton-polariton condensation and edge-lasing", Nature Materials (2024).</p> <p>This work was supported by the National Science Center, Poland, under projects 2022/47/B/ST3/02411 (B.P., M. Kędziora and K.T.), 2021/43/B/ST3/00752 (M.M.) and 2019/35/N/ST3/01379 (A.O.), and financed by the European Union EIC Pathfinder Open project ‘Polariton Neuromorphic Accelerator’ (PolArt, ID: 101130304) (B.P., D.S., J.S. and M.M.). H.S. acknowledges project no. 2022/45/P/ST3/00467 co-funded by the Polish National Science Centre and the European Union Framework Programme for Research and Innovation Horizon 2020 under the Marie Skłodowska-Curie grant agreement no. 945339. A.O. acknowledges support from the Foundation for Polish Science (FNP). This work was supported by the joint bilateral project ‘Novel photonic platform for neuromorphic computing’ Italy MAECI–Poland NAWA PPN/BIT/2021/1/ 00124/U/00001 (K.Ł.-M., B.P., R.M., L.D.M. and D.S.). M.E., A.S. and K.B. acknowledge support from the statutory funds of the Łukasiewicz Research Network–Institute of Microelectronics and Photonics. This work had been completed while K.B. was a Doctoral Candidate in the Interdisciplinary Doctoral School at the Łódź University of Technology, Poland.</p>
Absolute radiation tolerance of amorphous alumina coatings at room temperature
<p>Set consists four folders named after the methods used to obtained the data i.e. Nanoindentation, XRD, TEM and SEM.</p> <p><strong>→ SEM </strong></p> <p>In SEM folder there are 2 original image files that make up Figure 2 in the paper. Based on the filenames, they are clearly identifiable.</p> <p><strong>→ TEM</strong></p> <p>In SEM folder there are 12 original image files that make up Figures from 7 to 12 in the paper. Based on the filenames, they are clearly identifiable.</p> <p><strong>→ XRD</strong></p> <p>In XRD folder there are three .txt files that makes up the Fig. 3 in the paper. In each of them there are two columns, where 1<sup>st</sup> is 2θ (°) and 2<sup>nd</sup> is Intensity (counts per second). Based on the filenames, they are clearly identifiable.</p> <p><strong>→ Nanoindentation</strong></p> <p>To each material state (dpa level) there are two .txt files assigned. First is named ‘[sample number] [dpa] HE [force] LD.txt’ and contains Load-displacement data. In such a file there are two columns, where 1<sup>st</sup> is displacement (nm) and 2<sup>nd</sup> is force (mN). Single curves are arranged one under another (separated with two empty rows). Second file is named ‘[sample number] [dpa] HE [force] AR.txt’ and contains aggregate data with the columns named. For virgin and 25 dpa samples there are additional files named ‘[sample number] [dpa] HE FQSM [coating thickness] AR.txt’ . These were used to made up Figures 3 and 4 in the paper.</p>
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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)
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DANDI Archive for NWB datasets
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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.