IrO2 Nanotube Arrays as Stimulation Electrodes for Implantable Neuroelectronics

• Main Authors: WEI-CHIANG HUANG, 黃韋強
• Other Authors: 陳適範
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/66hfry

碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 106 === We develop chemical bath deposition processes for conformal IrO2 depositions on TiO2 nanotube arrays. In addition, we develop an anodization process which can control tube diameters and densities of TiO2 nanotube arrays. These IrO2 nanotube arrays undergo electrochemical analysis in charge storage capacity (CSC) and electrochemical impedance to evaluate its potential as stimulation electrodes for implantable devices. Images from electron microscopes confirm the formation of uniform IrO2 on both internal and external surface of nanotubes. In addition, the cycling lifetime of IrO2 nanotube arrays is evaluated by performing CV scans for 1,000 cycles with a scan rate of 0.1 V/s. The IrO2 nanotube arrays reveal large CSC values and low electrochemical impedances which are attributed to hollow tubular nanostructure with IrO2 deposition.