Three-Dimensional X-ray Observation of Atmospheric Biological Samples by Linear-Array Scanning-Electron Generation X-ray Microscope System

Flower-like LLM-105 three-dimensional microstructures, which consisted of LLM-105 microrods with rectangular cross-sections, were prepared via a smiple template- and surfactant-free recrystallization process using [Bmim]CF3SO3as good solvent and water as poor solvent. A tentative mechanism for the growth of the flower-like LLM-105 three-dimensional microstructures was proposed on the basis of the analysis of X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). Comparing with LLM-105 raw material, the thermal decomposition took place at lower temperature and the weight loss has increased for the flower-like three-dimensional microstructures in the differential scanning calorimetric/thermogravimetric (DSC/TG) measurements.

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Three-dimensional visualization of Golgi-stained neurons by a projection X-ray microscope converted from a scanning electron microscope.

The Tohoku Journal of Experimental Medicine ◽

10.1620/tjem.141.249 ◽

1983 ◽

Vol 141 (3) ◽

pp. 249-256 ◽

Cited By ~ 4

Author(s):

NORIO TAKAHASHI ◽

SHOICHI TAKAHASHI ◽

MANABU KAGAYAMA ◽

KEIJI YADA

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Three Dimensional ◽

X Ray ◽

Scanning Electron

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Brilliant angle-independent structural colours preserved in weevil scales from the Swiss Pleistocene

Biology Letters ◽

10.1098/rsbl.2020.0063 ◽

2020 ◽

Vol 16 (4) ◽

pp. 20200063

Author(s):

Luke T. McDonald ◽

Suresh Narayanan ◽

Alec Sandy ◽

Vinodkumar Saranathan ◽

Maria E. McNamara

Keyword(s):

Fossil Record ◽

Evolutionary History ◽

Three Dimensional ◽

Far Field ◽

Poor Knowledge ◽

X Ray ◽

Evolutionary Origins ◽

X Ray Scattering ◽

Colour Palette ◽

Scanning Electron

Extant weevils exhibit a remarkable colour palette that ranges from muted monochromatic tones to rainbow-like iridescence, with the most vibrant colours produced by three-dimensional photonic nanostructures housed within cuticular scales. Although the optical properties of these nanostructures are well understood, their evolutionary history is not fully resolved, in part due to a poor knowledge of their fossil record. Here, we report three-dimensional photonic nanostructures preserved in brightly coloured scales of two weevils, belonging to the genus Phyllobius or Polydrusus , from the Pleistocene (16–10 ka) of Switzerland. The scales display vibrant blue, green and yellow hues that resemble those of extant Phyllobius/Polydrusus . Scanning electron microscopy and small-angle X-ray scattering analyses reveal that the subfossil scales possess a single-diamond photonic crystal nanostructure. In extant Phyllobius/Polydrusus , the near-angle-independent blue and green hues function primarily in crypsis. The preservation of far-field, angle-independent structural colours in the Swiss subfossil weevils and their likely function in substrate matching confirm the importance of investigating fossil and subfossil photonic nanostructures to understand the evolutionary origins and diversification of colours and associated behaviours (e.g. crypsis) in insects.

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Pore and mineral structure of rock using nano-tomographic imaging

MRS Proceedings ◽

10.1557/opl.2015.335 ◽

2015 ◽

Vol 1744 ◽

pp. 235-240 ◽

Cited By ~ 1

Author(s):

Jukka Kuva ◽

Mikko Voutilainen ◽

Antero Lindberg ◽

Joni Parkkonen ◽

Marja Siitari-Kauppi ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Three Dimensional ◽

Potassium Feldspar ◽

Dimensional Structure ◽

Good Tool ◽

X Ray ◽

Mineral Structure ◽

Micrometer Scale ◽

Scanning Electron

ABSTRACTIn order to better understand the micrometer-scale structure of rock and its transport properties which arise from it, seven monomineral samples from two sites (Olkiluoto and Sievi, Finland) were studied with micro- and nanotomography and scanning electron microscopy. From the veined gneiss of Olkiluoto we studied biotite, potassium feldspar, plagioclase (composition of oligoclase) and cordierite, and from Sievi tonalite biotite and two grains of plagioclase (albite). These minerals were the main minerals of these samples. Samples were carefully separated and selected using heavy liquid separation and stereomicroscopy, their three dimensional structure was imaged using X-ray tomography, and their precise mineral composition was determined using scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS). The micrometer-scale mineral structure of these samples was observed together with their pores and fissures, and alteration effects were identified whenever applicable. Nanotomography combined with SEM analysis was concluded to be a good tool for analyzing effects of alteration in monomineral samples.

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X-ray photoelectron spectroscopy studies of bond structure between polyvinyl alcohol and a titanate cross-coupling agent

Journal of Materials Research ◽

10.1557/jmr.1995.1565 ◽

1995 ◽

Vol 10 (6) ◽

pp. 1565-1571 ◽

Cited By ~ 12

Author(s):

Mehmet A. Gülgün ◽

Oludele O. Popoola ◽

Waltraud M. Kriven

Keyword(s):

Polyvinyl Alcohol ◽

Photoelectron Spectroscopy ◽

Three Dimensional ◽

Cross Coupling ◽

X Ray ◽

Organic Complexes ◽

Dimensional Network ◽

Triethanol Amine ◽

Spectroscopy Studies ◽

Scanning Electron

Chemical interactions between polyvinyl alcohol (PVA) and triethanol amine titanate chelate were studied using x-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The titanate chelate cross coupled the PVA solution and produced a viscous gel. The gel had a three-dimensional network structure containing -CPVA-O-Ti-O-CPVA- organic complexes. A new C(ls) signature at 285.7 eV and an O(ls) signature at 531.25 eV were associated with the formation of these complexes. The water of the PVA solution was physically retained in the gelled structure and was readily available for chemical reactions. The removal of this entrapped water was irreversible and led to a collapsed film of Ti-cross-linked PVA.

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Degradation of Methylene Blue Dye in the Presence of Visible Light Using SiO2@α-Fe2O3 Nanocomposites Deposited on SnS2 Flowers

10.20944/preprints201804.0036.v1 ◽

2018 ◽

Author(s):

Sridharan Balu ◽

Kasimayan Uma ◽

Guan-Ting Pan ◽

Thomas C.-K. Yang ◽

Sayee Kannan Ramaraj

Keyword(s):

Methylene Blue ◽

Three Dimensional ◽

Semiconductor Materials ◽

Blue Dye ◽

Core Shell ◽

Methylene Blue Dye ◽

X Ray Diffraction ◽

Facile Hydrothermal Method ◽

X Ray ◽

Scanning Electron

Semiconductor materials have been shown to have better photocatalytic behavior and can be utilized for the photodegradation of organic pollutants. In this work, three-dimensional flower-like SnS2 were synthesized by a facile hydrothermal method. Core-shell structured SiO2@α-Fe2O3 nanocomposites were then deposited on the top of the SnS2 flowers. The as-synthesized nanocomposites were characterized by X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), Brunauer-Emmett-Teller (BET) and photoluminescence spectroscopy (PL). The photocatalytic behavior of the SnS2-SiO2@α-Fe2O3 nanocomposites was observed by observing the degradation of methylene blue (MB). The results show an effective enhancement of photocatalytic activity for the degradation of MB especially for the 15 wt. % SiO2@α-Fe2O3 nanocomposites on SnS2 flowers.

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Three-dimensional X-ray fluorescence imaging modes for biological specimens using a full-field energy dispersive CCD camera

Journal of Analytical Atomic Spectrometry ◽

10.1039/c9ja00198k ◽

2019 ◽

Vol 34 (10) ◽

pp. 2083-2093 ◽

Cited By ~ 3

Author(s):

Björn De Samber ◽

Oliver Scharf ◽

Günther Buzanich ◽

Jan Garrevoet ◽

Pieter Tack ◽

...

Keyword(s):

Fluorescence Imaging ◽

Biological Samples ◽

Three Dimensional ◽

Ccd Camera ◽

Energy Dispersive ◽

Field Energy ◽

Full Field ◽

X Ray ◽

Pros And Cons

New three-dimensional full-field XRF imaging schemes are demonstrated using biological samples: the pros and cons with respect to traditional scanning XRF techniques are given.

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