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Figure 3
SEM images of the PR patterned by unfocused direct beam (a) and focused X-ray beam with exposure times of 4 s (b), 5 s (c) and 10 s (d), respectively. |
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Figure 3
SEM images of the PR patterned by unfocused direct beam (a) and focused X-ray beam with exposure times of 4 s (b), 5 s (c) and 10 s (d), respectively. |