Figure 6.

(a) Bioresorbable interfaces between intracranial sensors and external wireless data-communication modules with percutaneous wiring. (1) Image of bioresorbable pressure and temperature sensors integrated with dissolvable metal interconnects; (2) Diagram of a bioresorbable sensor system in the intracranial space of a rat; (3) Demonstrations of an implanted bioresorbable sensor in a rat and (4) sutured individual; (5) Healthy, freely moving rat equipped with a complete, biodegradable wireless intracranial sensor system. Reprinted with permission from Ref. [114], Copyright (2016), Springer Nature; (b) Images collected at several stages of accelerated dissolution of a bioresorbable pressure sensor upon insertion into an aqueous buffer solution (pH 12). Reprinted with permission from Ref. [114], Copyright (2016), Springer Nature; (c) Bioresorbable, actively multiplexed neural electrode array in an exploded-view rendering. Reprinted with permission from Ref. [115], Copyright (2016), Springer Nature; (d) Optical micrograph images of a pair of unit cells at various stages of fabrication (left) and a picture of a complete system (right). Reprinted with permission from Ref. [115], Copyright (2016), Springer Nature; (e) Images collected at several stages of accelerated dissolution of a system immersed into an aqueous buffer solution (pH 12) at 37 °C. Reprinted with permission from Ref. [115], Copyright (2016), Springer Nature.