Fig. 7

Images of a completed retinal implant (1mm in diameter) with a gold electrode array. a) Color image; the top view of a full SU-8-gold retinal implant; scale bar = 0.5mm. The insert is a zoom-in on the area demarcated by the rectangle (scale bar = 20µm). b) SEM images; the top view of the implant as in a); scale bar = 0.5mm. In the insert, a zoom-in on the area demarcated by the rectangular; scale bar = 20 µm. c) A FIB/SEM cross section image of the 3D well-like structure encapsulating the electrode; scale bar = 10µm. The black pillars are the SU-8 micro-wells walls (*) and the gold electrode (the white arrow). Scale bar = 10µm