Fig. 4: System assembly. | Microsystems & Nanoengineering

Fig. 4: System assembly.

From: Flexible polyimide-based hybrid opto-electric neural interface with 16 channels of micro-LEDs and electrodes

Fig. 4

a Schematic diagram of back-to-back alignment of two sub-arrays with two needles inserted through the identical round holes into a PDMS layer. The inset shows the two sub-arrays assembled together using epoxy dispensed at reserved positions. b Two flexible printed circuit boards (FPC-1 and FPC-2) hot-pressed to the contact pads of the micro-LED array and microelectrode array, respectively. c Bond of two FPCs close to the interfaces with a PI tape. d Side view of the assembled device with hybrid recording and stimulating capabilities

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