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Open Research Data

  • BET adsorption-desorption isotherm of nano-CeO2 impregnated with Co
    Open Research Data
    open access

    The dataset includes the isotherms of adortion and desorption of N2 at LN2 temperature. The sorption isotherms were obtained using Quatachrome NovaTouch LX1 equippment. The catalyts powder composed of nanoCeO2 impreganted with Co oxide nanoparticles with the usage of BCD (Beta-cyclodextrins) and without addition. 

  • XPS measurement of the Fe-Ti based materials
    Open Research Data
    open access

    The mono‐ and bimetal‐modified (Pd, Cu) titanium(IV) oxide and iron oxide (III) photocatalysts were prepared by chemical reduction method and characterized using XPS method. The composition of elements incorporated in the surface layer of mono- and bimetallic photocatalysts was determined by XPS analysis, as well as the valence state of elements. Measurements...

  • Polymers doped by Ca or P. Chemical composition investigations
    Open Research Data
    open access

    The calcium and phosphorus doped polyurethane polymers (PU) were analyzed by XPS method. A series of samples with various content of Ca and P dopand - from 0% up to 21%) were selected for measutements. The chemical composition and valence state of elements were measurements using OmicronNatechnology UHV system wih  Argus hemispherical photoelectron...

  • X-Ray photoemission spectroscopy measurements of the Nb-V-Sr-O ceramics
    Open Research Data
    open access

    Niobium doped strontium vanadate based perovskite SrV1-xNbxO3-δ materials were prepared via conventional solid state reaction (SSR) method. For comparison, different samples with a various amount of niobium dopant in the structure were synthesized; x = 0; 0,2; 0,5; 0,8 and 1. Samples were sintered by two-steps: first under a pure hydrogen (purity >99.999%)...

  • XPS study of the YST ceramics
    Open Research Data
    open access

    Yttrium-doped strontium titanate  was prepared via conventional solid-state reaction method from Y2O3 (Sigma Aldrich, 99,9%), TiO2 (Sigma Aldrich, 99%) and SrCO3 (Sigma Aldrich,98%). For comparision, two other techniques were used for synthesis: Pechini and wet methods. Both kind of samples were measured, after and before reduction process (in a hydrogen)....

  • XPS study of the TiO2-WO2 composites
    Open Research Data
    open access

    Valence state of W and Ti was measured in a TiO2-WO3 composites with a various composition.Powder samples of pure titanium dioxide, tungsten oxide and mix of 50% titanium oxide and 50% od tungsten oxide were measured.  Oxides were annealed at the temperature in the range of 300 Celsius degree up to 900 deg. Measurements were performed by XPS UHV Omicron...

  • XPS measurements of the Fe-Pb-Si based glass
    Open Research Data
    open access

    Glass samples with nominal compositions of xFe2O3-(50-x)PbO–50SiO2, where x = 12.5, 15, 17.5 (mol%) were prepared. Analytical grade substrates were used: Fe2O3, SiO2, and PbO. The appropriate amounts of reagents were mixed in an agate mortar. The powders obtained were melted in porcelain un-enamelled crucibles in an electric furnace at a temperature...

  • SEM analysis of the TiO2 layers deposited on a FTO substrates
    Open Research Data
    open access

    Titanium dioxide layers were deposited on a FTO conducting glass by sol-gel method. For sol gel synthesis butoxy titanium and ethanol were used as a reagents. Samples were sintered in a furnace at temperature of 600 deg.  SEM measurements were performed by FEI Quanta FEG250 microscope. SEM images of a cross-section of samples exhibit a porous structures...

  • Investigation of plasmon resonance in a silver nanoparticles
    Open Research Data
    open access

    Silver nanostructures were prepared on borosilicate glass (Corning 1737F) substrates. Thin Ag films (1–9 nm thickness) were deposited using a table-top dc magnetron sputtering coater (EM SCD 500, Leica) in pure Ar plasma (argon, Air Products 99.999%). The Ag target was of 99.99% purity, the rate of layer deposition was about 0.4 nm·s−1, and the incident...

  • The topography of various sialoliths by scanning electron microscopy
    Open Research Data
    open access

    This dataset contains SEM micrographs taken for salivary gland stones (sialolith) extracted during joint studies between the Medical University of Gdansk and Gdansk University of Technology. Three different types of stones were examined, as discussed in the article: 10.1111/odi.13708

  • The corrosion studies of 3,4,5-trihydroxybenzoic acid as an effective corrosion inhibitor of low alloy steel
    Open Research Data
    open access

    The dataset contains the electrochemical studies evaluating if gallic acid is a corrosion inhibitor for low alloy steel. Three measurements were carried out each case; corrosion potential (label ecorr), electrochemical impedance spectroscopy (label eis) and cyclic polarization (label cp). The measurements were carried out in sodium chloride, acidified...

  • XPS analysis of TBBO glass
    Open Research Data
    open access

    Glasses and glass-ceramics with nominal composition 73 TeO2– 4BaO– 3Bi2O3–18SrF2-2RE2O3 (where RE = Eu, Dy) have been synthesized by conventional melt-quenching technique and subsequent heat treatment at 370 °C for 24 h in air atmosphere. Various Eu3+ to Dy3+ molar ratio have been applied to investigate luminescence properties in both glass and glass-ceramic...

  • X-Ray diffraction of the metallic nanostructures
    Open Research Data
    open access

    Metallic nanostructures (gold and silver) were manufactured as a thermal annealing of gold or silver thin film. Gold films with thickness of 2.8 nm were deposited on a silicon substrates using a table-top dc magnetron sputtering coater (EM SCD 500, Leica), equipped with quartz microbalance for in-situ thickness measurements. Films were deposited from...

  • Optical properties of tellurium dioxide thin films
    Open Research Data
    open access

    TeO2 and TeO2 doped by Eu thin films manufactured by magnetron sputtering method were measured by optical spectroscopy.  Metallic Te target and Te-Eu mosaic target with diameter of 50.8 mm were sputtered for about 45 min in argon-oxygen atmosphere what resulted in 300 nm film thickness deposition. The pressure in the chamber was below 0.2 Pa and substrate...

  • Luminescence of TeO2:Eu thin films
    Open Research Data
    open access

    Tellurium dioxide doped by europium thin films were deposited by magnetron sputtering method and simultaneously heated at 200 oC. Presence of Eu ions and their valence states was confirmed by X-ray photoemission spectroscopy measurements. The structure of the films as well as the influence of europium dopant on crystalline structure of the films was...

  • The database of normal RR-intervals of length up to 512 of 41 patients at rest hospitalized due to the episode of acute ischemic stroke
    Open Research Data
    open access

    This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

  • The database of normal RR-intervals of length up to 512 of 46 healthy subjects at rest
    Open Research Data
    open access

    This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

  • The database of interpolated RR-intervals of length 512 of 46 healthy subjects at rest
    Open Research Data
    open access

    This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

  • The database of indices computed from RR-intervals of length 512 of 46 healthy subjects at rest
    Open Research Data
    open access

    This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

  • The database of indices computed from RR-intervals of length 512 of 41 patients at rest hospitalized due to the episode of acute ischemic stroke
    Open Research Data
    open access

    This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

  • The database of interpolated RR-intervals of original length 512 of 41 patients at rest hospitalized due to the episode of acute ischemic stroke
    Open Research Data
    open access

    This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

  • Depth XPS profile of vanadium pentoxide
    Open Research Data
    open access

    Vanadium pentoxide sample was manufactured by sol-gel method and deposited on a substrate by spin coating technique. To determine depth profile of chemical composition of thin film, etching by Argon ion gun was used. Thin film was etched three times. Chemical composition was measured by XPS method.

  • Tellurite based glass doped by Eu3+ ions - XPS measurements
    Open Research Data
    open access

    Eu3+ doped tellurite glass ceramics containing SrF2 nanocrystals were prepared using melt quenching technique and subsequent heat treatment of glass in 370 °C for different time periods. Thermal properties of glass matrix have been determined based on DSC measurements. XRD and XPS results confirmed formation of SrF2 nanocrystals in glass matrices after...

  • Dewetting of silver films detected by XPS method
    Open Research Data
    open access

    Dewetting of silver thin films was detected by XPS method. Thin metallic films were deposited by magnetron sputtering method. Formation of nanostructures , as a result of thermal annealing, was confirmed by SEM microscope. For comparision three samples were measured. Bulg gold, as-deposited silver film with thickness of 3 nm and nanostructures.

  • Formation of gold nanostructures detected by XPS method
    Open Research Data
    open access

    Gold nanostructers were manufactured by thermal dewetting of thin film. Film with thickness of 2.8 nm was deposited by magnetron sputtering method. As a result of annealing at 550 deg, nanostructures appear. Bulk gold, as-deposited gold film and metallic nanostructures were measured by XPS method. 

  • Depth XPS profile of Fe-S layers on a titanium substrate
    Open Research Data
    open access

    Depth XPS profile of Fe-S layers on a titanium substrate was measured. Material was etched by Argon ion gun and measured by XPS method. For each sample, three times per 10 minutes each was sputtered.

  • Chemical properties of bismuth telluride – carbon composites.
    Open Research Data
    open access

    Carbon nanotubes and amorphous carbon have been introduced into bismuth telluride matrix (in 0.15 and 0.30 wt % ratio) in order to investigate influence of carbon on composite’s thermoelectric properties. Composites with well-dispersed additives have been obtained by sonication and ball-milling. Chemical composition of materials was confirmed by XPS...

  • Morphology of the gold nanoislands
    Open Research Data
    open access

    Dewetting of the thin metallic films leads to formation of an isolated islands. morphology of nanostructures was measured by SEM microscope. Thin gold films with a thickness of 1.2 nm, 1.5 nm and 3.4 nm were anealed at 550, 600 and 650 Celcius degress.

  • Optical transmission of the Niobium thin films
    Open Research Data
    open access

    Niobium thin films with a thickness of 200nm were deposited n a Corning glass substrate by magnetron sputtering method. The optical transmission spectra in a visible light range were.recorded. Investigations showed a good optical transmission thru the layers for each samples, annealed at various temperatures. For measurements samples annealed at 500,...

  • XRD analysis of the tellurium dioxide thin films
    Open Research Data
    open access

    Tellurium dioxide thin films were deposited by magnetron sputtering method. The XRD analysis of the films annealed at 200, 500, 650 and 700 celsius degree showed appearing of crystalline phase in a higher temeratures.

  • Ultra-thin film of aluminum oxide influence on the plasmon resonance in gold nanostructures
    Open Research Data
    open access

    Ultra-thin film of aluminum oxide influence on the plasmon resonance in gold nanostructures was measured by UV-VIS spectroscopy. Ultra thin film of Al2O3 was deposited on a gold nanostructures. Thickness of film was 2nm - 8nm. Shift of plasmon resonance was observed, as a result of various dielectric constant of layer.

  • TEM imaging of metal nanoparticle cross section
    Open Research Data
    open access

    TEM microscope was used for a imaging of metallic nanostructures. Metallic nanostructures were manufactured by thermal annealing of thin films. Gold and silver nanostructures were chosen for measurements. Samples were annealed for 15 and 60 minutes at 550 deg.

  • Interface diffusion between metallic nanoparticles and silicon substrate
    Open Research Data
    open access

    Interface diffusion between metallic nanoparticles and silicon substrate was detected by EDX method. Metallic nanostructures were manufactured by thermal annealing of thin films. Gold and silver nanostructures were chosen for measurements. Samples were annealed for 15 and 60 minutes at 550 deg.

  • Structural analysis of the tellurium dioxide thin films
    Open Research Data
    open access

    TeO2 thin films were deposited by magnetron sputtering method. After deposition, amorphous samples were annealed at various temperatures. Influence of annealing temperature on a presence of crystalline phase was investigated.

  • Optical properties of MnO-B2O3 based glass
    Open Research Data
    open access

    MnO-B2O3 based glass with Au nanoparticles samples were  annealing for a various time (in a range of 24-96 hours) at various temperatures (from 340 up to 350 deg.). Presence of silver nanoparticles was detected by UV-VIS measurements. On the basis of change optical bandgap, Ag NPs was detected.

  • Morphology of the sol-gel derived LTO:Cu films
    Open Research Data
    open access

    Morphology of the lithium titanate doped by Cu thin films were investigated by SEM microscope. Films were deposited by spin-coater from sol-gel derived sol. SEM images showed a high porous structure, tipaciall for sol-gel based films. For measurements samples with a various content of Cu were selected.

  • Optical measurements of LTO:Cu sol-gel derived thin films
    Open Research Data
    open access

    Lithium titanate doped by copper thin films were manufactured by chemical, sol-gel method. Flms were deposited on a Corning glass substrated by spin coater. To calculated optical band gap and other optcal parameters, UV-VIS spectroscopy measurements were performed. For measurements selected samples with various content of Cu.

  • Impedance spectroscopy of the lithium titanate doped by copper thin films
    Open Research Data
    open access

    Lithium titanate doped by copper thin films were derived by sol-gel method. Prepared gel was deposited by spin-coating technique. Samples with various content of Cu were measured by impedance spectroscopy method in a wide range of temperature, from -120 up to 150 deg.

  • Structural investigations of the LTO:Cu thin films
    Open Research Data
    open access

    Lithium titanate (Li1+xTi2-xO4) doped with Cu2+ ions was synthesized by sol-gel processing method. The structure was characterized by X-ray Diffraction (XRD). All samples revealed presence of LTO spinel phase. X-ray pattern of undoped LTO was free of any impurities and other crystal phases. Similarly, samples with low amount of copper dopant (x = 0.05...

  • Analysis of the electrical parameters of the LTO thin films
    Open Research Data
    open access

    Lithium titanate thin films were derived by sol-gel technique. Films with thickness ca. 800 nm were annealed for various time, in a range of 10h-80h at 550 deg. Electrical conductivity in a wide range of temperature was measured.

  • XRD investigations of the lithium titanate thin films
    Open Research Data
    open access

    Nanocrystalline thin films with 800 nm thickness were prepared by sol–gel method. To examine the influence of the annealing temperature on as-prepared films crystallization, the coatings were heated at temperature from 500 °C up to 600 °C  for 20h. Structure of manufactured thin films was investigated using X-ray diffraction (XRD). The most visible...

  • Optical measurements of lithium titanate sol-gel derived thin films
    Open Research Data
    open access

    Nanocrystalline thin films with 800 nm thickness were prepared by sol–gel method. To examine the influence of the annealing time on as-prepared films crystallization, the coatings were heated at 550 °C for 10, 20 and 80 h. On the basis of transmission characteristic optical properties were calculated. It was found that transmission through the thin...

  • Detection of the Ag nanoparticles in Te-Bi-Ba-Oa glass
    Open Research Data
    open access

    The influence of the manufacturing parameters of tellurium-bismuth-barium glasses on the presence of silver nanoparticles was investigated. Glasses were annealed at 330, 335, 340, 345 and 350 degrees Celsius for 24 and 48 hours. Presence of the Ag nanoparticles was measured by XPS method. The growth of nanoparticles was observed along with the extension...

  • Euilibrium composition of CH4-CO2-CO-H2-H2O system for CO2/H2/H2O methanation
    Open Research Data
    open access

    The equilibrium compositions  of  CH4, CO2, CO, H2, H2O without C under the methanation reaction of 1:2 CO:H2 syngas mixtures were supplied with this dataset 

  • Euilibrium composition of CH4-CO2-CO-H2-H2O-C system for CO2/H2/H2O methanation
    Open Research Data
    open access

    The equilibrium compositions  of  CH4, CO2, CO, H2, H2O and C under the methanation reaction of 1:2 CO:H2 syngas mixtures were supplied with this dataset 

  • The XRD diffraction pattern of interdiffusion test in the CLO-NiO-YSZ system (30wt.%YSZ)
    Open Research Data
    open access

    The dataset includes the XRD pure diffraction pattern of the interdiffusion system consisting of CLO (Ce0.8La0.2O2), NiO and 8YSZ (8mol.% Y2O3 stabilized ZrO2). The mixture contains equal amounts of CLO and NiO as well as 30wt.% 8YSZ. Samples were sintered at 1400 oC. The reaction between CLO and YSZ is visible. 

  • The XRD diffraction pattern of interdiffusion test in the CLO-NiO-YSZ system (20wt.%YSZ)
    Open Research Data
    open access

    The dataset includes the XRD pure diffraction pattern of the interdiffusion system consisting of CLO (Ce0.8La0.2O2), NiO and 8YSZ (8mol.% Y2O3 stabilized ZrO2). The mixture contains equal amounts of CLO and NiO as well as 20wt.% 8YSZ. Samples were sintered at 1400 oC. The reaction between CLO and YSZ is visible. 

  • The XRD diffraction pattern of interdiffusion test in the CLO-NiO-YSZ system (10wt.%YSZ)
    Open Research Data
    open access

    The dataset includes the XRD pure diffraction pattern of the interdiffusion system consisting of CLO (Ce0.8La0.2O2), NiO and 8YSZ (8mol.% Y2O3 stabilized ZrO2). The mixture contains equal amounts of CLO and NiO as well as 10wt.% 8YSZ. Samples were sintered at 1400 oC. The reaction between CLO and YSZ is visible. 

  • Thermal behaviour of vanadium xerogel powder under different inert atmosphere
    Open Research Data
    open access - series: Vanadium oxides

    The DataSet contains the results of the thermal behavior of the vanadium xerogel powder. The information about xerogel powder synthesis is described in the Journal of Nanomaterials.

  • FTIR spectra of VO2 and V2O3 nanostructures
    Open Research Data
    open access - series: Vanadium oxides

    The DataSet contains the FTIR spectra of VO2 and V2O3 nanostructures obtained by the sol-gel with different reaction conditions. The information about xerogel powder synthesis is described in the Journal of Nanomaterials. The xerogel powder was annealing under argon atmosphere in the temperature range 400-1000C. The results show that the morphology...