Details

Autor(en) / Beteiligte

• Sanyuan Chen
• Weihua Pei
• Qiang Gui
• Yuanfang Chen
• Shanshan Zhao
• Hongda Chen

Titel

Multi-channel microelectrode array for cortical recording and stimulation: Fabrication and modification

Ist Teil von

• The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, 2013, p.395-398

Ort / Verlag

IEEE

Erscheinungsjahr

2013

Quelle

IEEE/IET Electronic Library

Beschreibungen/Notizen

• The fabrication of silicon-substrate multi-channel microelectrode arrays for single neuron recording as well as modification of two materials to optimize the neural tissue-electrode interface were investigated. By use of multi-project wafer (MPW) model, six kinds of microelectrode arrays with different recording sites arrangement were simultaneously fabricated from one 4-inch wafer. To improve electric characteristic and biocompatibility, conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) and multi-wall carbon nanotube (MWCNT) were used to modify the surface of microelectrode. The modified microelectrode exhibited better electrochemical characteristics, including a particularly high safe charge injection limit and low electrode impedance, as well as high signal-to-noise ratio in vivo. All of these characteristics are desirable for an implantable neural microelectrode and the modification method can be widely used to modify other neural interface devices.