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. 2018 Oct 26;8:15847. doi: 10.1038/s41598-018-34158-4

Figure 5.

Figure 5

Normalized Hahn-echo signals (dots) before (a), after 60 min (b), and after 120 min (c) of NF etching, with exponential fitting curves (lines). (d) The measured Hahn-echo T2 of the single-NV nanodiamond as a function of the NF etching time.