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Figure 4
Electron-beam-induced bubbling in dry sodium phosphate. The amorphous salt layer is thinner to the upper left, and thicker to the lower right. The number and size range of spherical bubbles increases with thickness of the dry salt; adjacent areas that are even thinner show no bubbles. The image is intentionally underfocused to increase phase contrast. Dark dots are 15 nm colloidal gold particles.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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