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209 results for “scanning electron microscopy”
Mapping mineralogical heterogeneities at the nm-scale by scanning electron microscopy in modern Sardinian stromatolites: Deciphering the origin of their laminations
<p>These are the raw or processed data used for a paper published in Chemical Geology by Debrie et al. (2022), entitled "Mapping mineralogical heterogeneities at the nm-scale by scanning electron microscopy in modern Sardinian stromatolites: Deciphering the origin of their laminations", <a href="https://doi.org/10.1016/j.chemgeo.2022.121059">https://doi.org/10.1016/j.chemgeo.2022.121059</a></p> <p>The data content is summarized in the List_description_of_data.xlsx file</p>
Simulated calibration dataset for 4D scanning transmission electron microscopy
<p>4D-STEM data frequently requires a number of calibrations in order to make accurate measurement: for instance, in various cases, it can be essential to measure and correct for diffraction shifts, account for ellipticity in the diffraction patterns, or determine the rotational offset between the real and diffraction planes.</p> <p>We've prepared a simulated 4D-STEM dataset which includes diffraction shifting, elliptical distortion, and an r-space/k-space rotational offset. Two HDF5 files each include the simulated data for two different electron probes: a standard probe, using a circular probe-forming aperture, and a 'bullseye' probe, using a patterned aperture. Each HDF5 file contains the following data objects:</p> <p>(a) the 'experimental' 4D-STEM scan of a strained single-crystal gold nanoparticle (size: (100,84,250,250) )</p> <p>(b) a 4D-STEM scan of a calibration sample of polycrystalline gold (size: (100,84,250,250) )</p> <p>(c) a stack of diffraction images of the electron probe over vacuum (size: (250,250,20) )</p> <p>(d) a single image of the electron probe over the sample and far from focus, such that the CBED forms a shadow image (size: (512,512) )</p>
Field Emission Scanning Electron microscopy from Zr-Cu-Ag metallic glass coatings after antibacterial test with E.Coli
<p>Field Emission Scanning Electron Microscopy Figures from metallic glass (Zr-Cu-Ag) antibacterial coatings. Coatings have the name SP in their file name. The non-coated comparison is PBT. This is after the antibacterial test with <em>E.coli</em> after 24 hours. </p>
Fast Pixelated Detectors in Scanning Transmission Electron Microscopy. Part II: Post Acquisition Data Processing, Visualisation, and Structural Characterisation
<p>Scanning transmission electron microscopy data related to paper "Scanning transmission electron microscopy data related to paper "Fast Pixelated Detectors in Scanning Transmission Electron Microscopy. Part II: Post Acquisition Data Processing, Visualisation, and Structural Characterisation", <a href="https://doi.org/10.1017/S1431927620024307">https://doi.org/10.1017/S1431927620024307</a>.</p>
Cryo-4D-STEM datasets on cells and cellular organelles for demonstrating a dose-Efficient cryo-EM technique: tilt-Corrected Scanning Transmission Electron Microscopy
<p>This upload contains three 4D-STEM datasets in .raw format for demonstrating a dose-efficient cryo-EM technique for thick samples: tilt-corrected Scanning Transmission Electron Microscopy (tcBF-STEM). The dataset dimension is 128130256*256. Data were acquired on vitrified intact E.coli cells and isolated human cell organelles. This upload also contains the EFTEM images in .mrc acqired in the same ROI as the 4D-STEM dataset. </p> <p>It also contains analysis of the manuscript's Fig 3 and Ext. data fig 8. </p>
Figs 16–21 in Redescription of Strombidium coronatum (Leegaard, 1915) Kahl, 1932 (Ciliophora, Spirotricha) based on live observation, protargol impregnation, and scanning electron microscopy
Figs 16–21. Strombidium coronatum, Irish Sea specimens (16–18, scanning electron micrographs; 19–21, protargol impregnation, micrographs of several focal planes were stacked, using the computer program CombineZP from Alan Hadley). 16 – ventrolateral view; 17 – left lateral view showing uniquely shaped peristome, which is roughly triangular in outline and almost flat, extending in the sagittal plane. The extrusomes insert in short oblique rows anteriorly to the girdle kinety; note that some of them are just ejected (arrowhead); 18 – posterior cell portion showing the sharp, longitudinal ridges that have already been illustrated in the original description by Leegaard (1915); 19 – left lateral view of an early divider; 20 – dorsolateral view of an early divider; 21 – ventrolateral view. AP – apical protrusion, BM – buccal membranelles, CM – collar membranelles, DC – distended cell surface, EX – extrusome attachment sites, GK – girdle kinety, MA – macronucleus, OP – oral primordium, VK – ventral kinety. Scale bars: 40 µm (16), 20 µm (17, 19–21), and 10 µm (18).
Figs 11–22 in Palp sensory structures in adult caddisflies of the suborder Annulipalpia (Trichoptera): a scanning electron microscopy study
Figs 11–22. Palp sensilla of caddisflies of the suborder Annulipalpia: 11 – N. bimaculata female, long trichoid sensilla on lateral surface of the fifth maxillary palp segment; 12 – N. bimaculata female, short chaetoid sensillum on ventral surface of the fourth maxillary palp segment; 13 – Ch. marginata male, a group of long chaetoid sensilla on medial surface of the second maxillary palp segment; 14 – D. varians male, truncated chaetoid sensillum on
Figs 7–10 in Palp sensory structures in adult caddisflies of the suborder Annulipalpia (Trichoptera): a scanning electron microscopy study
Figs 7–10. Labial palps of P. apicalis (7–8) and N. bimaculata (9–10) females. 7 – first and second segments; 8, 9 – third segment; 10 – sensory field on the third segment. Abbreviations: chs-s – short chaetoid sensilla; lts – long trichoid sensilla; pes-f – flattened petaloid sensilla; sf – sensory field. Roman numerals represent segment numbers.
Figs 1–6 in Palp sensory structures in adult caddisflies of the suborder Annulipalpia (Trichoptera): a scanning electron microscopy study
Figs 1–6. Medial (1–5) and ventrolateral (6) surfaces of maxillary palp of D. robusta male (Hydropsychidae). 1 – first segment; 2 – second segment; 3 – third segment; 4 – sensory field of petaloid sensilla on the first segment; 5 – fourth segment; 6 – tip of the fifth segment. Abbreviations: cfs – campaniform sensilla; chs-l – long chaetoid sensilla; chs-s – short chaetoid sensilla; lts – long trichoid sensilla; pes-c – curved petaloid sensilla; sf – sensory field. Roman numerals represent segment numbers.
РИС. 4. Прикрепительный аппарат глохидиев Beringiana beringiana: A–C – внешний вид крючков; D – макрошипы. Масштабные линейки 10 мкм (A–C) и 5 мкм (D). СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. FIG. 4. Hooks (A–C) and macrospines (D) of Beringiana beringiana glochidia. Scale bars 10 µm (A–C) и 5 µm (D). Scanning electron microscopy. in Первые данные о морфологии глохидиев двустворчатых моллюсков Beringiana beringiana (Bivalvia, Unionidae) оЗера Дальнее, Камчатка
РИС. 4. Прикрепительный аппарат глохидиев Beringiana beringiana: A–C – внешний вид крючков; D – макрошипы. Масштабные линейки 10 мкм (A–C) и 5 мкм (D). СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. FIG. 4. Hooks (A–C) and macrospines (D) of Beringiana beringiana glochidia. Scale bars 10 µm (A–C) и 5 µm (D). Scanning electron microscopy.
РИС. 5. Поверхности створки глохидиЯ со скульптурой и порами: А – наруЖнаЯ; В –внутреннЯЯ. Масштабные линейки 10 мкм. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. FIG. 5. Valve surfaces with the sculpture and pores: A – exterior; B – interior. Scale bars 10 µm. Scanning electron microscopy. in Первые данные о морфологии глохидиев двустворчатых моллюсков Beringiana beringiana (Bivalvia, Unionidae) оЗера Дальнее, Камчатка
РИС. 5. Поверхности створки глохидиЯ со скульптурой и порами: А – наруЖнаЯ; В –внутреннЯЯ. Масштабные линейки 10 мкм. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. FIG. 5. Valve surfaces with the sculpture and pores: A – exterior; B – interior. Scale bars 10 µm. Scanning electron microscopy.
РИС. 3. Раковины Зрелых глохидиев Beringiana beringiana в раЗных ракурсах: А–С – Закрытые раковины, вид со стороны створки (А), вентрального угла (В) и лигамента (С); D–F – полностью открытые раковины, вид иЗнутри (D), снаруЖи (E) и боковых краев створок (F); G, H – приоткрытые раковины, стрелка укаЗывает на остатки волокон мускулаЗамыкателЯ. МасштабнаЯ линейка 100 мкм. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. FIG. 3. Mature glochidial shells of Beringiana beringiana from different angles of view: A–C – closed shells, view from the valve side (A), ventral angle (B), and ligament (C); D–F – open shells, interior view (D), exterior view (E), and from lateral margins of valves (F); G, H – ajar shells, the arrows indicate the remains of the adductor muscle fibers. Scale bar 100 µm. Scanning electron microscopy. in Первые данные о морфологии глохидиев двустворчатых моллюсков Beringiana beringiana (Bivalvia, Unionidae) оЗера Дальнее, Камчатка
РИС. 3. Раковины Зрелых глохидиев Beringiana beringiana в раЗных ракурсах: А–С – Закрытые раковины, вид со стороны створки (А), вентрального угла (В) и лигамента (С); D–F – полностью открытые раковины, вид иЗнутри (D), снаруЖи (E) и боковых краев створок (F); G, H – приоткрытые раковины, стрелка укаЗывает на остатки волокон мускулаЗамыкателЯ. МасштабнаЯ линейка 100 мкм. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. FIG. 3. Mature glochidial shells of Beringiana beringiana from different angles of view: A–C – closed shells, view from the valve side (A), ventral angle (B), and ligament (C); D–F – open shells, interior view (D), exterior view (E), and from lateral margins of valves (F); G, H – ajar shells, the arrows indicate the remains of the adductor muscle fibers. Scale bar 100 µm. Scanning electron microscopy.
Text-fig. 7. Scanning electron micrographs (a, b, d, e, g–k), X-ray microtomographic orthoslices (c) and synchrotron radiation X-ray tomographic microscopy orthoslices (f) of fruits and endocarps of uncertain affinity from Zliv-Řídká Blana locality. a–c: Trebecenia sarcocalis, a – tricarpellate fruit, no. NM-F 3637, b – fruits supported by pentamerous and persistent calyx, no. NMF 3637, c – fruit almost circular in transverse section, no. NM-F 3637; d: Taxon 17, small fruit with slightly sunken stylar region, no. NM-F 3201; e: Taxon 19, spherical fruit, the fruit wall composed of large isodiametric, thick walled cells, no. NM-F 3181; f: Taxon 19, single-seeded fruit, no. NM-F 3621; g: Taxon 20, syncarpous, multicarpellate fruit of ten carpels, no. NM-F 3200; h: Taxon 22, syncarpous, multicarpellate fruit of seven carpels, no. NM-F 3159; i: cf. Sabia menispermoides, endocarp of drupaceous fruits, no. NM-F 4624; j: Taxon 25, endocarp triangular in cross-section, no. NM-F 3218; k: Taxon 24, endocarp spherical in cross-section with a distinctly ribbed and foveolate surface, no. NM-F 3217. in Plant Mesofossils From The Late Cretaceous Klikov Formation, The Czech Republic
Text-fig. 7. Scanning electron micrographs (a, b, d, e, g–k), X-ray microtomographic orthoslices (c) and synchrotron radiation X-ray tomographic microscopy orthoslices (f) of fruits and endocarps of uncertain affinity from Zliv-Řídká Blana locality. a–c: Trebecenia sarcocalis, a – tricarpellate fruit, no. NM-F 3637, b – fruits supported by pentamerous and persistent calyx, no. NMF 3637, c – fruit almost circular in transverse section, no. NM-F 3637; d: Taxon 17, small fruit with slightly sunken stylar region, no. NM-F 3201; e: Taxon 19, spherical fruit, the fruit wall composed of large isodiametric, thick walled cells, no. NM-F 3181; f: Taxon 19, single-seeded fruit, no. NM-F 3621; g: Taxon 20, syncarpous, multicarpellate fruit of ten carpels, no. NM-F 3200; h: Taxon 22, syncarpous, multicarpellate fruit of seven carpels, no. NM-F 3159; i: cf. Sabia menispermoides, endocarp of drupaceous fruits, no. NM-F 4624; j: Taxon 25, endocarp triangular in cross-section, no. NM-F 3218; k: Taxon 24, endocarp spherical in cross-section with a distinctly ribbed and foveolate surface, no. NM-F 3217.
Text-fig. 5. Mastixiopsis nyssoides KIRCHH. a, b, g–n: Organic preservation. a, b: Lignitic, unpermineralized, early Eocene Dorset Pipe clays at Arne, V. 40762. a: Ventral view (original illustration from pl. 18, fig. 1 of Chandler 1962). b: Transverse fracture, somewhat distorted by compression. c–f: Pyrite permineralization. c: Ventral view, V. 22963(1) from Sheppey, originally listed as Mastixia cantiensis. d: Lateral view, V. 22969 from Sheppey (identified as Mastixia grandis by Reid and Chandler 1933: pl. 25, fig. 8). e: Equatorial transverse physical section from (c). f: Equatorial transverse physical section from (d). g: Detail of pericarp from (e), showing endocarp formed of dense fibrous tissue, surrounded by mesocarp of anticlinally oriented larger cells. h: Detail of pericarp from (f). i–n: Type material from Eocene of Riestadt, Germany, MNB. i: Ventral view. j, k: Ventral and apical views of holotype. l: View of the transversely fractured surface from (j) showing horseshoe shaped locule. m: Equatorial transverse physical cut of the specimen in (i); note yellow resin cavity (arrow). n: Scanning electron microscopy of pericarp from (l) with locule lining at lower edge of image. Note dense endocarp tissue composed of small cells (fibres and sclereids), extending about 3/5 of distance to periphery, surrounded by mesocarp of larger, anticlinally oriented cells. Scale bars 1 cm in (a–f), (i–k), 1 mm in (g), 2 mm in (h), 3 mm in (l), m, 250 Μm in (n). Bar in (d) applies also to (c). Bar in (l) also applies to (m). Bar in (i) also applies to (j) and (k). in Mastixioid Fruits (Cornales) From The Early Eocene London Clay Flora: Morphology, Anatomy And Nomenclatural Revision
Text-fig. 5. Mastixiopsis nyssoides KIRCHH. a, b, g–n: Organic preservation. a, b: Lignitic, unpermineralized, early Eocene Dorset Pipe clays at Arne, V. 40762. a: Ventral view (original illustration from pl. 18, fig. 1 of Chandler 1962). b: Transverse fracture, somewhat distorted by compression. c–f: Pyrite permineralization. c: Ventral view, V. 22963(1) from Sheppey, originally listed as Mastixia cantiensis. d: Lateral view, V. 22969 from Sheppey (identified as Mastixia grandis by Reid and Chandler 1933: pl. 25, fig. 8). e: Equatorial transverse physical section from (c). f: Equatorial transverse physical section from (d). g: Detail of pericarp from (e), showing endocarp formed of dense fibrous tissue, surrounded by mesocarp of anticlinally oriented larger cells. h: Detail of pericarp from (f). i–n: Type material from Eocene of Riestadt, Germany, MNB. i: Ventral view. j, k: Ventral and apical views of holotype. l: View of the transversely fractured surface from (j) showing horseshoe shaped locule. m: Equatorial transverse physical cut of the specimen in (i); note yellow resin cavity (arrow). n: Scanning electron microscopy of pericarp from (l) with locule lining at lower edge of image. Note dense endocarp tissue composed of small cells (fibres and sclereids), extending about 3/5 of distance to periphery, surrounded by mesocarp of larger, anticlinally oriented cells. Scale bars 1 cm in (a–f), (i–k), 1 mm in (g), 2 mm in (h), 3 mm in (l), m, 250 Μm in (n). Bar in (d) applies also to (c). Bar in (l) also applies to (m). Bar in (i) also applies to (j) and (k).
Рис. 4. Микроскульптура наружной поверхности глохидиальных створок перловиц Nodularia biwae (A, D – увеличенный фрагмент) и Lanceolaria grayana (B, C – увеличенный фрагмент) иЗ Японии, о-в Хонсю. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 1 мкм (А, В) и 2 мкм (C, D). Fig. 4. Microsculpture of external surface of glochidia of mussels Nodularia biwae (A, D – fragment) and Lanceolaria grayana (B, C – fragment) from Honshu Is., Japan. Scanning electron microscopy. Scale bar 1µm (А, В) and 2 µm (C, D). in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East
Рис. 4. Микроскульптура наружной поверхности глохидиальных створок перловиц Nodularia biwae (A, D – увеличенный фрагмент) и Lanceolaria grayana (B, C – увеличенный фрагмент) иЗ Японии, о-в Хонсю. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 1 мкм (А, В) и 2 мкм (C, D). Fig. 4. Microsculpture of external surface of glochidia of mussels Nodularia biwae (A, D – fragment) and Lanceolaria grayana (B, C – fragment) from Honshu Is., Japan. Scanning electron microscopy. Scale bar 1µm (А, В) and 2 µm (C, D).
Nanoparticle Size Estimation by Scanning Transmission Electron Microscopy and Generative AI
<p>The "raw" directories contain unaltered simulated and experimental data. The train and val directories contain normalized data used to train the models of the manuscript. The dataframes directory contains all information about the atomic models. Exp info contains info about the raw experimental data (excluding the gas-cell data). </p>
Figures 25–28 in Complements to the morphology of Troglokhammouanus steineri Lourenço, 2007 (Scorpiones: Pseudochactidae) based on scanning electron microscopy
Figures 25–28: Chaerilus celebensis Pocock, female from Indonesia. 25. Left pecten, global view. 26. Microstructure of peg sensillae on teeth. 27–28. Peg sensillae in detail at different magnifications.
Figures 9–16 in Complements to the morphology of Troglokhammouanus steineri Lourenço, 2007 (Scorpiones: Pseudochactidae) based on scanning electron microscopy
Figures 9–16: Troglokhammouanus steineri Lourenço, male paratype. 9–10. Femur, dorsal aspect. 11. Chela hand, dorsoexternal aspect. 12. Fixed and movable fingers of chela, dorso-external aspect. 13. Patella, dorsal aspect. 14. Basitarsi and telotarsi of leg IV, showing spurs. 15. Telotarsi of leg IV with a pair of ventrosubmedian rows of spinules. 16. Tibial spur in detail.
Figures 1–8 in Complements to the morphology of Troglokhammouanus steineri Lourenço, 2007 (Scorpiones: Pseudochactidae) based on scanning electron microscopy
Figures 1–8: Troglokhammouanus steineri Lourenço, male paratype. 1. Carapace and chelicerae, dorsal aspect. 2. Carapace, lateral aspect, showing the small lateral ocelli (arrow). 3. Chelicera, dorsal aspect. 4. Sternum and genital operculum. 5. Sternites IV and V showing spiracles. 6. Spiracle in detail (arrow). 7–8. Metasomal segment V and telson, lateral and ventral aspects.
Figures 17–24 in Complements to the morphology of Troglokhammouanus steineri Lourenço, 2007 (Scorpiones: Pseudochactidae) based on scanning electron microscopy
Figures 17–24: Troglokhammouanus steineri Lourenço, male paratype. 17. Left pecten, global view. 18–19. Microstructure of peg sensillae on teeth. 20–24. Peg sensillae in detail at different magnifications.
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