Find research datasets worth reusing

opencc-by-4.0Jul 2020View details →

Crossed graphene nanoribbons as beam splitters and mirrors for electron quantum optics

OPEN DATA related to the research publication: S. Sanz, P. Brandimarte, G. Giedke, D. Sánchez-Portal, and T. Frederiksen, Crossed graphene nanoribbons as beam splitters and mirrors for electron quantum optics, Phys. Rev. B 102, 035436 (2020) [arXiv:2005.11391] Abstract: We analyze theoretically 4-terminal electronic devices composed of two crossed graphene nanoribbons (GNRs) and show that they can function as beam splitters or mirrors. These features are identified for electrons in the low-energy region where a single valence or conduction band is present. Our modeling is based on pz orbital tight-binding with Slater-Koster type matrix elements fitted to accurately reproduce the low-energy bands from density functional theory calculations. We analyze systematically all devices that can be constructed with either zigzag or armchair GNRs in AA and AB stackings. From Green's function theory the elastic electron transport properties are quantified as a function of the ribbon width. We find that devices composed of relatively narrow zigzag GNRs and AA-stacked armchair GNRs are the most interesting candidates to realize electron beam splitters with a close to 50-50 ratio in the two outgoing terminals. Structures with wider ribbons instead provide electron mirrors, where the electron wave is mostly transferred into the outgoing terminal of the other ribbon, or electron filters where the scattering depends sensitively on the wavelength of the propagating electron. We also test the robustness of these transport properties against variations in intersection angle, stacking pattern, lattice deformation (uniaxial strain), inter-GNR separation, and electrostatic potential differences between the layers. These generic features show that GNRs are interesting basic components to construct electronic quantum optical setups.

opencc-by-4.0May 2017View details →

XUV spectrum generated via HHG in neon, reflected by multilayer mirror

XUV spectra with spatial resolution are generated via High Harmonic Generation in neon filled cell. The conditions are optimized for high XUV yield in the spectral region of interest (bandwidth of ∼6 eV FWHM around 94.4 eV). A laser pulse of 0.25 mJ energy, about 6 fs of duration and centered at 800 nm is focused by 50 cm focal length mirror in a gas cell of 2.5 mm length. The generated XUV beam is then focused by a multilayer Mo/Si mirror (bandwidth of ∼6 eV FWHM around 94.4 eV) into a krypton cell (1 mm long). The transmitted XUV spectra are then diffracted by a flat-field XUV concave grating with 1200 grooves per mm (Hitachi 001-0640) and acquired with a XUV camera model PI-SX:400 manufactured by Princeton Instruments. There is also a slit < 0.5 mm that is imaged by the XUV grating to the XUV camera. <ul> <li>HHG_Ne is a spectrogram of XUV with the krypton cell evacuated.</li> <li>HHG_Ne_in_Kr is a spectrogram of XUV with the krypton cell filled. One can observe krypton absorption lines.</li> <li>HHG_lines is a resulting Kr absorption spectral lines with assigned shells. 5p denotes excitation to 5p, term 5/2 3/2, while 5p' denotes 5p, term 3/2 1/2.</li> </ul>

opencc-by-4.0Sep 2022View details →

implementation of an in-line Kerr active cavity equipped with a loop mirror

This dataset includes the measurements of the resonances collected at the through port of an active fiber cavity (in in-line configuration) of 5 meters of length based on a step index silica fiber and including a loop mirror and a fiberized mirror at the two ends of the cavity. The dataset includes also the measurement of the effective losses of the in-line active cavity vs. the intracavity power.

opencc-by-4.0Jun 2024View details →

Data for manuscript "Lightwave-controlled relativistic plasma mirrors" by Marie Ouillé, Jaismeen Kaur; Zhao Cheng ,Stefan Haessler and Rodrigo Lopez-Martens

Data shown in figures 2, 3 and 4 of the manuscript  "Lightwave-controlled relativistic plasma mirrors" by Marie Ouillé, Jaismeen Kaur; Zhao Cheng ,Stefan Haessler and Rodrigo Lopez-Martens, availble as a preprint here:   <a href="https://arxiv.org/abs/2406.06396">arXiv:2406.06396</a>.

opencc-by-4.0Jun 2021View details →

Mirror Magritte Torus Test Sequence

# Mirror-Magritte-Torus sequence by LISA ULB The test sequence "Mirror Magritte Torus" is provided by Sarah Fachada, Daniele Bonatto, Mehrdad Teratani, Gauthier Lafruit, members of the LISA department, EPB (Ecole Polytechnique de Bruxelles), ULB (Universite Libre de Bruxelles), Belgium.  # License: CC BY-NC-SA  # Terms of Use: Anykind of publication or report using this sequence should refer to the following references. [1] Sarah Fachada, Daniele Bonatto, Mehrdad Teratani, Gauthier Lafruit, "Mirror Magritte Torus Test Sequence", 2021. @misc{fachada_mirror_2021,     title = {Mirror {Magritte} {Torus} {Test} {Sequence}},     author = {Fachada, Sarah and Bonatto, Daniele and Teratani, Mehrdad and Lafruit, Gauthier},     month = feb,     year = {2021},     doi = {10.5281/zenodo.5048262} } [2] Sarah Fachada, Daniele Bonatto, Mehrdad Teratani, and Gauthier Lafruit, "Light Field Rendering for non-Lambertian Objects," presented at the Electronic Imaging, 2021. @inproceedings{fachada_light_2021,     title = {Light {Field} {Rendering} for non-{Lambertian} {Objects}},     booktitle = {Electronic {Imaging}},     author = {Fachada, Sarah and Bonatto, Daniele and Teratani, Mehrdad and Lafruit, Gauthier},     year = {2021} }  # Production: Laboratory of Image Synthesis and Analysis, LISA department, EPB, Universite Libre de Bruxelles, Belgium.  # Content: This dataset contains a test scene created and rendered with Blender [1] and the addon script [2] extended for Blender 2.8. We provide the Blender file and the rendered scene. The scene contains a mirror reflective torus rendered in a regular camera array of 21x21 cameras. In addition to the 3D model, we provide the images in the folder `parallel_cameras` : resolution of 2000x2000, the cameras are parallel, with a principal point at the center of the image. The dataset contains:  - a `camera.json` file in OMAF coordinates system (Camera position: X: forwards, Y:left, Z: up, Rotation: yaw, pitch, roll) [3],  - a `parameters.cfg` generated with [2],  - a `texture` folder containing the rendered views in png format,  - a `depth` folder containing the associated depth maps in exr format.      # References and links:   [1] Blender Online Community, "Blender - a 3D modelling and rendering package." Blender Institute, Amsterdam: Blender Foundation, 2020. [2] K. Honauer, O. Johannsen, D. Kondermann, and B. Goldluecke, "A Dataset and Evaluation Methodology for Depth Estimation on 4D Light Fields" in Asian Conference on Computer Vision, 2016, https://github.com/lightfield-analysis/blender-addon https://github.com/dbonattoj/blender-addon [3] B. Kroon, "Reference View Synthesizer (RVS) manual [N18068]," ISO/IEC JTC1/SC29/WG11, Macau SAR, China, p. 19, Oct. 2018. https://mpeg.chiariglione.org/standards/mpeg-i/omnidirectional-media-format

opencc-by-4.0Jul 2021View details →

Sharpening emitter localization in front of a tuned mirror - NPC dataset

This is a depository for two single molecule localisation microscopy datasets of nuclear pore complex (NPC) structures for single particle averaging. The data was published in:  Heil, H.S., Schreiber, B., Götz, R. et al. Sharpening emitter localisation in front of a tuned mirror. Light Sci Appl 7, 99 (2018). https://doi.org/10.1038/s41377-018-0104-z Both datasets have two different levels of localisation precision as one is a conventional STORM experiment and the second a mirror-enhanced STORM experiment. A detailed description of the sample preparation and imaging conditions can be found in the related publication. In short the NPC structures are placed on the surface of a glas coverslip or nano-mirror coated coverslip by manual isolation and spreading of nuclear envelopes from xenopus laevis oocytes, fixed and stained by indirect immunolabeling. The primary antibody targets GP210, the secondary F(ab')2 fragment is conjugated with Alexa Fluor 647.  In this depository I'm providing the raw images data, localisation data and super-resolved reconstruction  for the two experiments, as well as the localisation data and super-resolved reconstruction of single NPC rings.  I'm also providing a MatLab script that allows to select single NPC positions in the super-resolved image and export the localization data of the single NPC ROI: P01_ImageAlignment_PickElements.m Information about the dataset is also available  here: NPC Image Alignment Dataset_Info.pdf. Image parameters: 102 nm pixel size, EM Gain 100, Photoelectrons per A/D count: 15.01 Column structure of the localisation text files:  Id,Frame, x [nm], y [nm], sigma [nm], intensity [photon], offset [photon], bkgstd [photon], chi2, Uncertainty [nm], detections Files:  <ul> <li>NPCData_glass_EPI.tif</li> </ul> -> NPC on glass coverslip, low power EPI illumination, widefield image, 20 ms exposure <ul> <li>NPCData_glass_STORM.tif</li> </ul> -> NPC on glass coverslip, high power EPI illumination, 5 ms exposure, 20000 frames <ul> <li>NPCData_glass_STORM_loc.csv</li> </ul> -> ThunderSTORM Localisation data of NPCData_glass_STORM.tif, parameters specified NPCData_glass_STORM_loc-protocol.txt <ul> <li>NPCData_glass_STORM_20xNormalizedGaussian.tif</li> </ul> -> 20x Nomalized Gaussian reconstruction of localization data from NPCData_glass_STORM.tif (ThunderSTORM), pixelsize 5.1 nm <ul> <li>NPCData_glass_STORM_singleRings.zip</li> </ul> -> Localisation data and 20x 20x Nomalized Gaussian reconstruction of single NPC ROIs picked out of the NPCData_glass_STORM dataset, ROI size is 240*240 nm2 <ul> <li>NPCData_nanomirror_EPI.tif</li> </ul> -> NPC on nanomirror coated coverslip, low power EPI illumination, widefield image, 20 ms exposure <ul> <li>NPCData_nanomirror_STORM.tif</li> </ul> -> NPC on nanomirror coated coverslip, high power EPI illumination, 5 ms exposure, 20000 frames <ul> <li>NPCData_nanomirror_STORM_loc.csv</li> </ul> -> ThunderSTORM Localisation data of NPCData_nanomirror_STORM.tif, parameters specified NPCData_nanomirror_STORM_loc-protocol.txt <ul> <li>NPCData_nanomirror_STORM_20xNormalizedGaussian.tif</li> </ul> -> 20x Nomalized Gaussian reconstruction of localisation data from NPCData_nanomirror_STORM.tif (ThunderSTORM), pixelsize 5.1 nm <ul> <li>NPCData_nanomirror_STORM_singleRings.zip</li> </ul> -> Localisation data and 20x 20x Nomalized Gaussian reconstruction of single NPC ROIs picked out of the NPCData_nanomirror_STORM dataset, ROI size is 240*240 nm2

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Mirror Lake High-Frequency Dissolved Oxygen and Temperature Profiles

This lake metabolism data was collected by HOBO Temperature loggers and miniDOT loggers that were deployed at Mirror Lake Central Buoy over the deepest part of the lake (11m) on 2023-08-23. HOBO loggers were deployed vertically at depths 0.25m, 2m, and 4m, and miniDOT loggers were deployed vertically at depths 0.5m, 1m, and 6m. Sensors were tied to nylon climbing rope at these different depths and anchored to a buoy. Loggers were later removed on 2023-09-08. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest in the White Mountains of New Hampshire, which is operated and maintained by the USDA Forest Service, Northern Research Station.

openCC (other)Jan 2026View details →

opencc-by-4.0Jun 2020View details →

K.973 Bronze Mirror Inscription : Transcription, translation and analysis

<a href="https://siddham.network/inscription/k973/">K.973</a> Bronze Mirror Inscription : Transcription, translation and analysis <a href="https://catalog.lib.uchicago.edu/vufind/alphabrowse/home?source=topic&from=Inscriptions+--+Cambodia">Inscriptions -- Cambodia</a> <a href="https://catalog.lib.uchicago.edu/vufind/alphabrowse/home?source=topic&from=Inscriptions.">Inscriptions. </a> <a href="https://catalog.lib.uchicago.edu/vufind/alphabrowse/home?source=topic&from=Cambodia.">Cambodia. </a>

opencc-by-4.0Dec 2023View details →

Figure 3 in A Pulsing-Mirror Eye in a Deep-Sea Ostracod

Figure 3. Ray tracing of light imaged on the Gigantocypris sp. retina: (A–B) when the luminous object is distant, the oscillations of the parabolic reflector cause the object to go in and out of focus at the retina, as the reflector is relaxed and then "flattened"; (C–D) when the luminous object is nearby, the oscillations of the parabolic reflector cause little change to the image focused on the retina.

opencc-by-4.0Dec 2023View details →

Figure 2. Frame from a in A Pulsing-Mirror Eye in a Deep-Sea Ostracod

Figure 2. Frame from a magnified video recording of a resting Gigantocypris sp. showing paired eyes only, anterior view. The mirrors appear silver; the layer of black, absorbing pigment beneath is not visible. A white-yellow light is back-reflected.

opencc-by-4.0Dec 2023View details →

Figure 1. Gigantocypris dracontovalis Cannon, 1940 in A Pulsing-Mirror Eye in a Deep-Sea Ostracod

Figure 1. Gigantocypris dracontovalis Cannon, 1940, whole animal, lateral view; muscles (yellow) behind parabolic mirrors of left eye evident (dorsal left-centre).

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Cracks in the mirror hypothesis: high specularity does not reduce detection or predation risk

Some animals, including certain fish, beetles, spiders and Lepidoptera chrysalises, have such shiny or glossy surfaces that they appear almost mirror-like. A compelling but unsubstantiated hypothesis is that a highly specular or mirror-like appearance enhances survival by reflecting the surrounding environment and reducing detectability. We tested this hypothesis by asking human participants to wear a mobile eye-tracking device and locate highly realistic mirror-green and diffuse-green replica beetles against a variety of backgrounds in a natural forest environment. We also tested whether a mirror-like appearance enhances survival to wild predators by monitoring survival of mirror-green and diffuse-green replica beetles in a forested habitat and an open habitat. Human participants showed no difference in the detection probability or detection latency of mirror versus diffuse replica beetles, indicating that mirror-like appearance does not impair prey capture. The field predation experiment found no difference in survival between the mirror and diffuse replica beetles in forested environments. Similarly, there was no difference in survival when beetles were deployed in open habitat where there is no background to reflect, indicating that predators detect and do not actively avoid mirror-like beetles. Our results suggest that a mirror-like appearance does not reduce attack by predators. Instead, highly specular, mirror-like surfaces may have evolved for an alternate visual function or as a secondary consequence of selection for a non-visual function, such as thermoregulation.

opencc-zeroNov 2021View details →

dryad40/100

Dietary specialization mirrors Rapoport's rule in European geometrid moths

Aim: Latitudinal clines in dietary specialisation and range size are used to explain biodiversity distributions at large spatial scale, such as the latitudinal diversity gradient. The aim of this study was to test whether diet breadth (as a dimension of niche breadth) and range size decrease towards lower latitudes in a species-rich clade of herbivorous insects as predicted by the latitude – niche breadth hypothesis and Rapoport's rule, respectively. We further aimed at studying if these species characteristics are positively linked with each other as stated by the niche breadth – range size hypothesis. Location: Europe (35°N – 71°N) Time period: Present-day Major Taxa: Geometrid moths (Lepidoptera, Geometridae) Methods: For every species, we compiled information on latitudinal distribution and host-plant use based on available literature and online sources. We estimated each species' level of fundamental dietary specialisation while accounting for phylogenetic relationships among utilised host plants. We further reconstructed a phylogeny including all studied moth taxa in order to control for phylogenetic dependence in species characteristics. Phylogenetic least squares (PGLS) analyses were used to test each of our hypotheses. Results: We analysed 631 species of geometrids (85.2% of taxa within the biogeographical region), and found strong support for the latitude – niche breadth hypothesis as well as for Rapoport's rule. Fundamental diet breadth was further found to be positively related to latitudinal range size, which supports the niche breadth – range size hypothesis. These results were retained when the subfamilies Ennominae and Larentiinae were analysed separately. Main conclusions: Our findings indicate that latitudinal clines in range size and fundamental diet breadth covary in European geometrid moths and are likely drivers of increased species richness towards lower latitudes. This supports the idea that both characteristics should be studied simultaneously in order to unveil mechanisms structuring biodiversity patterns at macroecological scale.

opencc-zeroMar 2022View details →

opencc-by-4.0May 2022View details →

Dataset: Mirror symmetric on-chip frequency circulation of light

The calibrated dataset comprising main text figure 4 and supplementary figure S8 for the paper "Mirror symmetric on-chip frequency circulation of light." The CSV files contain isolation and insertion loss data. The ".m" file contain scripts for plotting the CSV content in MATLAB as heatmaps. Additional details describing the dataset and usage instructions are described in the "readme.txt" file.

Figs 43–52. Zosterodasys transversus, neotype specimens after protargol impregnation. 43 in Taxonomic Revision and Neotypification of Zosterodasys transversus (Kahl, 1928), with Description of a Mirror-Image Doublet (Ciliophora, Phyllopharyngea, Synhymeniida)

Figs 43–52. Zosterodasys transversus, neotype specimens after protargol impregnation. 43 – ventral view of ciliary pattern, nuclear and oral apparatus of a neotype specimen; 44 – ventral view of ciliary pattern and oral apparatus of a mirror-image cell; 45 – dorsal view of double pharyngeal tube of the monster shown in (44); 46 – lateral view of oral apparatus. The nematodesmal rods are straight for most of their length, but curve toward the oral opening at distal end (arrowhead); 47, 48, 52 – shape variability of macronucleus. Most specimens have an ellipsoidal macronucleus (47), while some display a curved (48) or a clavate (52) macronucleus; 49 – ventral view of anterior body portion showing oral apparatus and synhymenium; 50 – synhymenium extends obliquely interrupting most of the ciliary rows. It is composed of narrowly spaced dikinetids, except for the posterior tail, where they are spaced comparatively loosely (arrowheads); 51 – ventrolateral view of a specimen having some breaks in synhymenium (asterisks). CA – capitulum, D – ingested diatom, MA – macronucleus, MI – micronucleus, OA – oral apparatus, OO – oral opening, NE – nematodesmal rods, PT – pharyngeal tube, SK – somatic kineties, SY – synhymenium. Scale bars: 20 µm (47, 48, 50–52), 30 µm (44–46, 49), and 50 µm (43).

Figs 31–32. Zosterodasys transversus, neotype specimens from life. All specimens are from a field sample processed within 24 in Taxonomic Revision and Neotypification of Zosterodasys transversus (Kahl, 1928), with Description of a Mirror-Image Doublet (Ciliophora, Phyllopharyngea, Synhymeniida)

Figs 31–32. Zosterodasys transversus, neotype specimens from life. All specimens are from a field sample processed within 24 hours of collection. 31 – ventral view of a representative neotype cell with an ingested diatom; 32 – variability of body shape and size. Note that the largest specimen (arrow) is almost twice the size of the smaller ones (arrowheads). D – diatoms, OA – oral apparatus, PB – pharyngeal basket. Scale bars: 50 µm (31) and 100 µm (32).

Figs 23–30. Zosterodasys transversus, neotype specimens after protargol impregnation. 23, 25 in Taxonomic Revision and Neotypification of Zosterodasys transversus (Kahl, 1928), with Description of a Mirror-Image Doublet (Ciliophora, Phyllopharyngea, Synhymeniida)

Figs 23–30. Zosterodasys transversus, neotype specimens after protargol impregnation. 23, 25 – ventral view of ciliary pattern and oral apparatus of normal specimens; 24 – ventral view of ciliary pattern and oral apparatus of an abnormal specimen having a double cytostome and cyrtos; 26 – dorsal view of ciliary pattern showing synhymenium extending onto dorsal side; 27 – ventral view of the monster whose anterior body portion is shown in (24); 28 – ventrolateral view of a specimen having some breaks in synhymenium (asterisks); 29, 30 – ventral and dorsal views of ciliary pattern in posterior body portion showing that somatic kineties extend meridionally, i.e. do not form a suture or spica. Arrowheads denote slit-like cytopyge. CY – cytopyge, D – diatoms, MA – macronucleus, OA – oral apparatus, PB – pharyngeal basket, SK – somatic kineties, SY – synhymenium. Scale bars: 20 µm (28), 30 µm (23–26, 29, 30), and 50 µm (27).

Figs 33–42. Zosterodasys transversus, neotype specimens after protargol impregnation. 33 in Taxonomic Revision and Neotypification of Zosterodasys transversus (Kahl, 1928), with Description of a Mirror-Image Doublet (Ciliophora, Phyllopharyngea, Synhymeniida)

Figs 33–42. Zosterodasys transversus, neotype specimens after protargol impregnation. 33 – ventral view of ciliary pattern, nuclear and oral apparatus of a main neotype specimen; 34, 39, 40 – frontal (34) and lateral (39, 40) views of oral apparatus which consists of a central deeply impregnated pharyngeal tube and nematodesmal rods arranged in a ring. The nematodesmata are straight for most of their length but curve toward the oral opening at their distal end, where they are capped by a capitulum. Arrowheads (39, 40) note the site where the cytopharyngeal tube radiates fibres towards the nematodesmata; 35 – dorsal view of ciliary pattern showing synhymenium extending onto dorsal side (opposed arrowheads); 36 – surface view showing a fibre bundle extending in parallel and right of the somatic kineties; 37, 38 – dorsal and ventral views of ciliary pattern in posterior body portion. The somatic kineties extend meridionally, i.e. do not form a suture. Arrowheads in (37) denote the slit-like cytopyge. 41, 42 – lenticular and globular macronucleus. CA – capitulum, CV – contractile vacuole, CY – cytopyge, MA – macronucleus, OO – oral opening, NE – nematodesmal rods, PT – pharyngeal tube, SK – somatic kineties, SY – synhymenium. Scale bars: 10 µm (34), 20 µm (39–42), 30 µm (35–38), and 50 µm (33).