Photoelectric neural interface combining wire-bonding μleds with iridium oxide microelectrodes for optogenetics
This paper reports the design, fabrication, electrical and thermal characterization, as well as attachment and stability of a flexible photoelectric neural interface (PENI). Upon the wire-bonding technology, three micro LED (mu LED) chips are well-connected to the polyimide substrate as an array, with their luminous surfaces over against the holes. Meanwhile, a Parylene-C-based array with four microelectrodes (200 mu m in diameter) modified by sputtering iridium oxide film is fabricated to record micro electrocorticography (mu ECoG) signals. Then, the back-to-back assembly is utilized to allow blue light through the aligned holes on both arrays with almost no attenuation. As an optogenetics tool, the PENI can be attached on the cortical surface of a mouse expressing ChR2 to realize synchronized light modulating and neural signal recording.
WOS:000402552000139
2017
978-1-5090-5078-9
New York
4
Proceedings IEEE Micro Electro Mechanical Systems
538
541
REVIEWED
Event name | Event place | Event date |
Las Vegas, NV | JAN 22-26, 2017 | |