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  4. Visualization of the internal structure of Didymosphenia geminata frustules using nano X-ray tomography
 
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2017
Journal Article
Title

Visualization of the internal structure of Didymosphenia geminata frustules using nano X-ray tomography

Abstract
For the first time, the three-dimensional (3D) internal structure of naturally produced Didymosphenia geminata frustules were nondestructively visualized at sub-100 nm resolution. The well-optimized hierarchical structures of these natural organisms provide insight that is needed to design novel, environmentally friendly functional materials. Diatoms, which are widely distributed in freshwater, seawater and wet soils, are well known for their intricate, siliceous cell walls called 'frustules'. Each type of diatom has a specific morphology with various pores, ribs, minute spines, marginal ridges and elevations. In this paper, the visualization is performed using nondestructive nano X-ray computed tomography (nano-XCT). Arbitrary cross-sections through the frustules, which can be extracted from the nano-XCT 3D data set for each direction, are validated via the destructive focused ion beam (FIB) cross-sectioning of regions of interest (ROIs) and subsequent observation by scanning electron microscopy (SEM). These 3D data are essential for understanding the functionality and potential applications of diatom cells.
Author(s)
Zglobicka, Izabela
Technische Universität Warschau
Li, Qiong
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Gluch, Jürgen
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Plocinska, Magdalena
Technische Universität Warschau
Noga, Teresa
University of Rzeszów
Dobosz, Romuald
Technische Universität Warschau
Szoszkiewicz, Robert
Technische Universität Warschau
Witkowski, Andrzej
University of Szczecin
Zschech, Ehrenfried
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Kurzydlowski, Krzysztof J.
Technische Universität Bialystok
Journal
Scientific Reports  
Open Access
Link
Link
DOI
10.1038/s41598-017-08960-5
Additional full text version
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