State-of-the-art multimodal scanning hard X-ray imaging and tomography sheds light at multiple length-scales on biomineralization related processes - Université Paris-Saclay
Article Dans Une Revue Frontiers in Environmental Chemistry Année : 2024

State-of-the-art multimodal scanning hard X-ray imaging and tomography sheds light at multiple length-scales on biomineralization related processes

K. Medjoubi
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E. Tang
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D. Bazin
E. Letavernier
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K. Desjardins
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A. Somogyi
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Résumé

Biomineralization is a widespread process among living organisms, playing a significant role in the formation and preservation of geological structures, biogeochemical cycles, regulation of ocean chemistry, and carbon sequestration. Moreover pathological biomineralization has a huge impact on human health. The growth of biominerals provides a rich area for research at multiple length-scales since they have controlled hierarchical structures from nano-to macroscopic scales. Here, we provide an overview on the potentials of the state-of-the-art scanning hard X-ray imaging and tomography methods developed at the NANOSCOPIUM beamline at Synchrotron Soleil in such studies. Multimodal scanning imaging provides simultaneous information on the elemental composition by X-ray fluorescence (XRF) spectrometry, on the sample morphology by absorption contrast imaging, on the crystalline structure by X-ray diffraction, and on the luminescence characteristics by X-ray Excited Optical Luminescence. As illustrated through diverse research cases about biomineralization in stromatolites and pathological calcification, such a versatile portfolio of X-ray imaging techniques provides unique complementary information to conventional laboratory techniques on biominerals and the underlying mineral precipitation processes.
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Dates et versions

hal-04411479 , version 1 (23-01-2024)

Identifiants

Citer

K. Medjoubi, K. Benzerara, J. Debrie, E. Tang, D. Bazin, et al.. State-of-the-art multimodal scanning hard X-ray imaging and tomography sheds light at multiple length-scales on biomineralization related processes. Frontiers in Environmental Chemistry, 2024, 5, ⟨10.3389/fenvc.2024.1339829⟩. ⟨hal-04411479⟩
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