Figure 7.
Flexible and stretchable conducting polymer based devices for neuromodulation. (a) PEDOT:PSS electrodes and OECTs were integrated into the bending plane of a 4 μm thick parylene C device. (b) The ultraflexible probe was inserted with a stiff shuttle.140 (c) The viscoplastic PEDOT:PSS electrode could expand along with the growing tissue. (d) The viscoplastic electrode (MorphE) induced little inflammation (inflammatory biomarker ED1) in comparison to a conventional cuff electrode. (e) Soft and stretchable microwire based on a silicone/PEDOT–PEG/CNTs composite. (f) Histology of chronically implanted nerves with the soft microwire (SW, left) and polyimide wire (PW, right). The soft wire induced less scar tissue around the wire. Parts a and b reproduced with permission from ref (140). Copyright 2015 John Wiley and Sons. Parts c and d reproduced with permission from ref (146). Copyright 2020 Springer Nature. Parts e and f reproduced with permission from ref (148). Copyright 2019 John Wiley and Sons.