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. 2015 Mar 18;5:9265. doi: 10.1038/srep09265

Figure 4.

Figure 4

Cross-section TEM images of BHJ composite incorporated with Fe3O4 MNPs (A) without an external magnetostatic field alignment and (B) with an external magnetostatic field alignment, (C) and (D) are 6 times enlarged views of (A) and (B), respectively.