Fig. 1: Structures of the implantable microprobe.
From: A wireless, implantable optoelectrochemical probe for optogenetic stimulation and dopamine detection
a Conceptual illustration of the microprobe system for optogenetic stimulation and dopamine detection. b Exploded schematic of the microprobe, comprising a blue micro-LED, a diamond interlayer and a PEDOT:PSS thin film on the copper-coated polyimide (Cu/PI/Cu) substrate. c Cross-sectional scanning electron microscope (SEM) image of a PEDOT:PSS film (colorized in blue) coated on diamond. d Optical photographs of a fully fabricated microprobe (left: LED is off; right: LED is on, with an injection current of 0.1 mA)
