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. 2018 Oct 23;5(12):1800560. doi: 10.1002/advs.201800560

Figure 2.

Figure 2

a) SEM image of a single 3D plasmonic nanoelectrode embedded in the SU8 passivation layer. b,c) Magnification of six 3D nanofabricated flat electrodes and the entire MEA‐like device, respectively. e) Tilted SEM image of a fixed and resin‐infiltrated NIH‐3T3 cell cultured on the 3D plasmonic nanoelectrodes. In correspondence with the dotted line, g) the SEM image of the FIB cross section with inverted colors reveals the cell interface with the 3D plasmonic nanoelectrodes. The SU8 passivated flat substrate that is clearly visible (in white, below the cell). d) Inset of the cross section in which the 3D plasmonic nanoelectrode is close to the nuclear envelope (indicated with the starred arrow), and the cell membrane is in tight adhesion with the device (arrows without star). f) Inset of the cross section that shows the plasma membrane tightly wrapped all around the 3D plasmonic nanoelectrode (arrows) and to the flat SU8 passivation layer.