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. 2022 Sep 16;8:104. doi: 10.1038/s41378-022-00436-5

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© The Author(s) 2022

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Fig. 2 — a Recording sites after modification with PtNPs. b SEM images of a single modified site (top) and a local 20× magnification display of PtNPs (bottom). c Impedance characteristics at different frequencies of bare, modified microelectrodes and those after 2 months in vivo (n = 16)