Review Article

Conducting Polymer-Based Composite Materials for Therapeutic Implantations: From Advanced Drug Delivery System to Minimally Invasive Electronics

Figure 3

(a) Micromachined metal/silicon-based neural recording probe. (b, c) Optical micrographs of a PPy/PSS-coated 5-channel neural probe. (b) is the top view of the probe, and (c) is the side view from which the thickness of the film can be estimated. The area of each metal electrode is 3900 μm2, and the thickness of the probe is 15 μm. By varying the deposition charge, the amount of material deposited can be precisely controlled. (d–g) SEM images of PPy/SLPF-coated electrode sites. From (d) to (g), the deposition time increased, corresponding to a total charge passed of (d) 0 μC, (e) 1 μC, (f) 4 μC, and (g) 10 μC. The area of the uncoated electrode site is 1250 μm2 [72].
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