| Literature DB >> 18764404 |
A Barty1, S Marchesini, H N Chapman, C Cui, M R Howells, D A Shapiro, A M Minor, J C H Spence, U Weierstall, J Ilavsky, A Noy, S P Hau-Riege, A B Artyukhin, T Baumann, T Willey, J Stolken, T van Buuren, J H Kinney.
Abstract
Ultralow 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.Entities:
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Year: 2008 PMID： 18764404 DOI： 10.1103/PhysRevLett.101.055501
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161