Three-dimensional coherent X-ray diffraction imaging of a ceramic nanofoam: determination of structural deformation mechanisms

Abstract

Ultra-low density polymers, metals, and ceramic nanofoams are valued for their high strength-to-weight ratio, high surface area and insulating properties ascribed to their structural geometry. We obtain the labrynthine internal structure of a tantalum oxide nanofoam by X-ray diffractive imaging. Finite element analysis from the structure reveals mechanical properties consistent with bulk samples and with a diffusion limited cluster aggregation model, while excess mass on the nodes discounts the dangling fragments hypothesis of percolation theory.

8 pages, 5 figures, 30 references

References in corpus (4)

• X-ray image reconstruction from a diffraction pattern alone
• High-resolution ab initio three-dimensional X-ray diffraction microscopy
• A unified evaluation of iterative projection algorithms for phase retrieval
• Relaxed Averaged Alternating Reflections for Diffraction Imaging

Cited by in corpus (7)

• An assessment of the resolution limitation due to radiation-damage in x-ray diffraction microscopy
• Coherent methods in the X-ray sciences
• Analysis of strain and stacking faults in single nanowires using Bragg coherent diffraction imaging
• Regularized Newton Methods for X-ray Phase Contrast and General Imaging Problems
• A uniqueness result for propagation-based phase contrast imaging from a single measurement
• Ab initio compressive phase retrieval
• Regularized Newton methods for simultaneous Radon inversion and phase retrieval in phase contrast tomography