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149 results for “nanostructure”
Code and dataset for article "Robust quantum engineering of current flow in carbon nanostructures at room temperature" published in Carbon, 119950 (2024), DOI: 10.1016/j.carbon.2024.119950
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Fig. 4 in Microanatomy and evolution of the nanostructures responsible for iridescent coloration in Trogoniformes (Aves)
Fig. 4 Iridescence-producing nanostructures at 8000× magnification. a Apaloderma vittatum. b Apaloderma narina. c Harpactes oreskios. d Harpactes diardii. e Harpactes ardens. f Euptilotis neoxenus. g
Fig. 5 in Microanatomy and evolution of the nanostructures responsible for iridescent coloration in Trogoniformes (Aves)
Fig. 5 Iridescence-producing nanostructures at 8000× magnification in species of Trogon. a T. elegans. b T. mexicanus. c T. personatus. d T. collaris. e T. comptus. f T. melanurus. g T. massena. h T. violaceus. i T. curucui. j T. viridis. k T. citreolus. l T. melanocephalus
Fig. 1 in Microanatomy and evolution of the nanostructures responsible for iridescent coloration in Trogoniformes (Aves)
Fig. 1 General anatomy of feather barbules in Trogoniformes, showing the iridescence-producing nanostructures
Fig. 3 in Microanatomy and evolution of the nanostructures responsible for iridescent coloration in Trogoniformes (Aves)
Fig. 3 Global scenario for anatomical tendencies in the evolution of the nanostructures responsible for iridescent coloration in Trogoniformes
Decorating Nanostructured Surfaces with Antimicrobial Peptides to Efficiently Fight Bacteria
<p>Data underlying the figures in the publication “Decorating Nanostructured Surfaces with Antimicrobial Peptides to Efficiently Fight Bacteria”, published in <em>ACS Appl. Bio Mater</em>., <strong>2020</strong>, 3, 3, 1533–1543.</p> <p><a href="https://pubs.acs.org/doi/10.1021/acsabm.9b01154">https://pubs.acs.org/doi/10.1021/acsabm.9b01154</a></p> <p>Table of contents:</p> <p><strong>1. Figure 1</strong>; Zip file containing the numerical data for the FCS studies of <em>Figure 1</em>.</p> <p><strong>2. Figure 2</strong>; Zip file containing the data underlying <em>Figure 2</em>.</p> <p><strong>3. Figure 3</strong>; Zip file containing the numerical data for the XPS studies of <em>Figure 3</em>.</p> <p><strong>4. Figure 4</strong>; Zip file containing the numerical data for the QCM-D studies of <em>Figure 4</em>.</p> <p><strong>5. Figure 5</strong>; Zip file containing the data underlying <em>Figure 5</em>.</p> <p><strong>6. Table 1</strong>; Zip file containing the numerical data for the FCS Fitting Parameters in <em>Table 1</em>.</p> <p><strong>5. Table 2</strong>; Zip file containing the numerical data for the Atomic concentrations calculated in <em>Table 1</em>.</p> <p> </p> <p> </p> <p> </p>
Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field
<p>Dataset of the publication "Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field" H. Rose, A. N. Vasil’ev, O. V. Tikhonova, T. Meier, and P. R. Sharapova, Phys. Rev. A <strong>107</strong>, 013703 (2023). ( https://doi.org/10.1103/PhysRevA.107.013703 ). The zip file includes the data on which the plots shown in figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 are based.</p>
NO2 gas sensing properties of hydrothermally synthesized WO3.nH2O nanostructures
<p><span>Nitrogen dioxide (NO<sub>2</sub>) has been identified as a serious air pollutant that threats to our environment, human life and world ecosystems. Therefore, detection of this air pollutant is crucial. Metal oxide semiconductor (MOS) is one of the best approaches frequently used to detect NO2 at relatively low temperatures. Hydrated tungsten trioxide (</span><span>WO<sub>3</sub>•nH<sub>2</sub>O</span><span>), an n-type semiconductor, is regarded to be a promising material for fabricating gas sensors, which are widely utilized in environmental and safety monitoring. In this work, </span><span>WO<sub>3</sub>•nH<sub>2</sub>O</span><span> nanoparticles have been synthesized using a polyfunctional surfactant-mediated hydrothermal approach in the addition of H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> and K<sub>2</sub>SO<sub>4</sub> at a molar ratio of 1:1. This paper has also reported the effect of reaction temperature (120°C to 200</span><span>°</span><span>C) on morphological changes and gas sensing performance. The characterization of these synthesized nanostructures was carried out by UV–Vis absorption spectroscopy (UV-Vis), X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The UV absorption peak was obtained around 300 nm. FESEM analysis showed sheet-like structures come together to form flower-type morphology. The synthesized WO<sub>3</sub>•nH<sub>2</sub>O flower-like structures was then used for </span><span>NO<sub>2</sub></span><span> gas sensing application. The prepared sensors showed considerably better sensor response (R<sub>g</sub>/R<sub>a</sub>=17.48) at 185°C for 25 ppm </span><span>NO<sub>2</sub></span><span>. </span></p>
Allogeneic Tissue Engineering (Nanostructured Artificial Human Cornea) in Patients With Corneal Trophic Ulcers in Advanced Stages, Refractory to Conventional (Ophthalmic) Treatment
ClinicalTrials.gov study NCT01765244. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Data from: Pseudo-enantiomeric chiral components and formation of the helical micro- and nanostructures in charge-transfer complexes
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Facile synthesis of magnesium-based metal-organic framework with tailored nanostructure for effective VOCs adsorption
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NO2 gas sensing properties of hydrothermally synthesized WO3.nH2O nanostructures
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Ethylene glycol assisted 3D floral evolution of BiFeO3-based nanostructures with effective magneto-electric response
<p>Controlled growth of nanostructures plays a vital role in tuning the physical and chemical properties of functional materials for advanced energy and memory storage devices. Herein, we synthesized hierarchical micro-sized flowers, built by the self-assembly of highly crystalline, 2-dimensional nanoplates of Co and Ni doped BiFeO<sub>3</sub>, using a simple ethylene glycol mediated solvothermal method. Pure BiFeO<sub>3</sub> attained scattered one-dimensional nanorods-type morphology having diameter nearly 60 nm. Co-doping of Co and Ni at Fe-site in BiFeO<sub>3</sub> does not destabilize the morphology; rather it generates 3-dimensinal floral patterns of self-assembled nanoplates. Unsaturated polarization loops obtained for BiFeO<sub>3</sub> confirmed the leakage behavior of these rhombohedrally distorted cubic perovskites. These loops were then utilized to determine the energy density of the BiFeO<sub>3</sub> perovskites. Enhanced ferromagnetic behavior with high coercivity and remanence was observed for these nanoplates. A detailed discussion about the origin of ferromagnetic behavior based on Goodenough-Kanamori's rule is also a part of this paper. Impedance spectroscopy revealed a true Warburg capacitive behavior of the synthesized nanoplates. High magneto-electric coefficient of 27 mV/cm.Oe at a bias field of -0.2 Oe was observed which confirmed the existence of magneto-electric coupling in these nanoplates.</p>
Topological properties of multiterminal superconducting nanostructures: Effect of a continuous spectrum
<p>Data and code for Figures in the manuscript</p>
Data from: Modular color evolution facilitated by a complex nanostructure in birds
The way in which a complex trait varies, and thus evolves, is critically affected by the independence, or modularity, of its subunits. How modular designs facilitate phenotypic diversification is well studied in non-ornamental (e.g., cichlid jaws), but not ornamental traits. Diverse feather colors in birds are produced by light absorption by pigments and/or light scattering by nanostructures. Such structural colors are deterministically related to the nanostructures that produce them and are therefore excellent systems to study modularity and diversity of ornamental traits. Elucidating if and how these nanostructures facilitate color diversity relies on understanding how nanostructural traits covary, and how these traits map to color. Both of these remain unknown in an evolutionary context. Most dabbling ducks (Anatidae) have a conspicuous wing patch with iridescent color caused by a two-dimensional photonic crystal of small (100–200 nm) melanosomes. Here, we ask how this complex nanostructure affects modularity of color attributes. Using a combination of electron microscopy, spectrophotometry, and comparative methods, we show that nanostructural complexity causes functional decoupling and enables independent evolution of different color traits. These results demonstrate that color diversity is facilitated by how nanostructures function and may explain why some birds are more color-diverse than others.
Data from: Synthesis and photoluminescence properties of silica-modified SiO2@ANA-Si-Tb@SiO2, SiO2@ANA-Si-Tb-L@SiO2 core-shell-shell nanostructured composites
Three novel core-shell nanostructured composites SiO2@ANA-Si-Tb, SiO2@ANA-Si-Tb-L (L = second ligand) with SiO2 as the core and terbium organic complex as the shell were successfully synthesized. The core and shell were connected together by covalent bonds. The terbium ion was coordinated with organic ligand forming terbium organic complex in the shell layer. The organosilane (HOOCC5H4NN(CONH(CH2)3Si(OCH2CH3)3)2 (abbreviated as ANA-Si) was used as the first ligand and 1, 10-phenanthroline (phen) or 2-thenoyltrifluoroacetone (TTA) was used as the second ligand. Furthermore, silica-modified SiO2@ANA-Si-Tb@SiO2, SiO2@ANA-Si-Tb-L@SiO2 core-shell-shell nanostructured composites were also synthesized by sol-gel chemical route, which involved the hydrolysis and polycondensation processes of tetraethoxysilane (TEOS) using cetyltrimethyl ammonium bromide (CTAB) as a surface-active agent. An amorphous silica shell was coated around the SiO2@ANA-Si-Tb, SiO2@ANA-Si-Tb-L core-shell nanostructured composites. The core-shell and core-shell-shell nanostructured composites exhibited excellent luminescence in solid state. Meanwhile, an improved luminescent stability property of the core-shell-shell nanostructured composites was observed for the aqueous solution. This type of core-shell-shell nanostructured composites exhibited bright luminescence, high stability and good solubility, which may present potential applications in the fields of optoelectronic devices, bio-imaging, medical diagnosis, and study on the structure of function composite materials.
Data from: A nanostructural basis for gloss of avian eggshells
The role of pigments in generating the colour and maculation of birds' eggs is well characterized, whereas the effects of the eggshell's nanostructure on the visual appearance of eggs are little studied. Here, we examined the nanostructural basis of glossiness of tinamou eggs. Tinamou eggs are well known for their glossy appearance, but the underlying mechanism responsible for this optical effect is unclear. Using experimental manipulations in conjunction with angle-resolved spectrophotometry, scanning electron microscopy, atomic force microscopy and chemical analyses, we show that the glossy appearance of tinamou eggshells is produced by an extremely smooth cuticle, composed of calcium carbonate, calcium phosphate and, potentially, organic compounds such as proteins and pigments. Optical calculations corroborate surface smoothness as the main factor producing gloss. Furthermore, we reveal the presence of weak iridescence on eggs of the great tinamou (Tinamus major), an optical effect never previously documented for bird eggs. These data highlight the need for further exploration into the nanostructural mechanisms for the production of colour and other optical effects of avian eggshells.
Figure 4 from: Fitriani EW, Avanti C, Rosana Y, Surini S (2024) Nanostructured lipid carriers: A prospective dermal drug delivery system for natural active ingredients. Pharmacia 71: 1-15. https://doi.org/10.3897/pharmacia.71.e115849
Figure 4 NLC Preparation Methods: High pressure homogenization; High shear homogenization and ultrasonication, Microemulsion, Solvent emulsification/ evaporation, Membrane contractor, Phase inversion temperature, Coacervation.
Supplementary materials: Development of dihydrooxyresveratrol-loaded nanostructured lipid carriers for effective treatment of hyperpigmentation
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Growth mechanism of oleylammonium-based tin and lead bromide perovskite nanostructures
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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)
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.