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Single-filter collection sample for a WA #1 WHA rod penetration event scraped onto a grid sandwich and observed in the TEM. (a) Bright-field image of nanoparticulate aggregates. The SAED pattern insert illustrates broad crystallinity. (b) Dark-field image of (a) using electron diffraction spots with the aperture area shown circled in SAED pattern insert in (a). Nanocrystalline particulates are designated typically by arrows. (200 kV accelerating potential).
