Abstract
A full 3D analysis of the hierarchical porosity in Coscinodiscus sp. diatom structures was carried out by using a multiscale approach that combines three advanced volumetric imaging techniques with resolutions and fields of view covering all the porous characteristics of such complex architectures: electron tomography, “slice and view” approach that uses a dual-beam microscope (FIB-SEM), and array tomography consisting of serial imaging of ultrathin specimen sections. This multiscale approach allowed the whole porosity network to be quantified and provided an unprecedented structural insight into these natural nanostructured materials with internal organization ranging from micrometer to nanometer. The analysed species is made of several nested layers with different pore sizes, shapes and connectivities and characterized by the presence of interconnected pores structured in various ways. The first evidence of the presence of a nanometric porosity made of ellipsoidal pores in the siliceous diatom frustules is also provided.
Author(s): Darouich, O (Darouich, Othmane); Baaziz, W (Baaziz, Walid); Ihiawakrim, D (Ihiawakrim, Dris); Hirlimann, C (Hirlimann, Charles); Spehner, D (Spehner, Daniele); Schultz, P (Schultz, Patrick); Poncet, H (Poncet, Hedwige); Rouchon, V (Rouchon, Virgile); Labidi, S (Labidi, Sana); Petit, C (Petit, Corinne); Levitz, P (Levitz, Pierre); Ersen, O (Ersen, Ovidiu)
https://doi.org/10.1039/d1na00691f
NANOSCALE ADVANCES
Volume: 4 Issue: 6 Pages: 1587-1598 Early Access Date: FEB 2022 Published Date: 2022 MAR 15
Accession Number: WOS:000756782000001
PubMed ID: 36134372
ISSN: 2516-0230
