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. 2015 Feb 26;41(4):339–347. doi: 10.1007/s10867-015-9382-3

Fig. 1.

Fig. 1

a Structure of the graphene MEAs. The inset is an optical image of a graphene MEA on a SiO2 (300 nm)/Si substrate, where the scale bar represents 100 μm. b Diagram of one of the graphene microelectrodes used to record the action potential