Figure 5.
SEM images of PSA. (A) Morphology at 1000× (scalebar is 10 μm); (B) Morphology at 2000× (scalebar is 10 μm); (C) Morphology at 5000× (scalebar is 1 μm); (D) Morphology at 10,000× (scalebar is 1 μm).
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