Details

Autor(en) / Beteiligte

• Bo-Wen Ji
• Xiao-Yang Kang
• Ming-Hao Wang
• Bu-Feng Bao
• Hong-Chang Tian
• Bin Yang
• Xiang Chen
• Xiao-Lin Wang
• Jing-Quan Liu

Titel

Photoelectric neural interface combining wire-bonding μleds with iridium oxide microelectrodes for optogenetics

Ist Teil von

• 2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS), 2017, p.538-541

Ort / Verlag

IEEE

Erscheinungsjahr

2017

Quelle

IEL

Beschreibungen/Notizen

• 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 (μLED) 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 μm in diameter) modified by sputtering iridium oxide film is fabricated to record micro electrocorticography (μECoG) 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.