Physics – Condensed Matter – Materials Science
Scientific paper
2007-08-30
Phys. Rev. Lett. 101, 055501 (2008).
Physics
Condensed Matter
Materials Science
8 pages, 5 figures, 30 references
Scientific paper
10.1103/PhysRevLett.101.055501
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.
Artyukhin A. B.
Barty Anton
Baumann Thomas
Buuren van T.
Chapman Henry N.
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