Enhancement of electro-chemical properties of TiO2 nanotubes for biological interfacing
| Autor: | Julie Gaburro, Hamid Garmestani, Sajjad Shafei, Dhurgham Khudhair, Saeid Nahavandi, Asim Bhatti, H. Amani Hamedani |
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| Rok vydání: | 2017 |
| Předmět: |
Nanotube
Materials science Biocompatibility Anodizing Annealing (metallurgy) Doping Bioengineering Nanotechnology 02 engineering and technology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Biomaterials Condensed Matter::Materials Science Mechanics of Materials Interfacing Nano Electrode 0210 nano-technology |
| Zdroj: | Materials Science and Engineering: C. 77:111-120 |
| ISSN: | 0928-4931 |
| Popis: | Micro/nano electrodes employing nanotubes has attracted paramount attention in recent years due to their inherent superior mechanical and structural properties. Electrical interfaces with different geometries and sizes have been developed as electrodes for measuring action potentials and investigating neural information processing in neural networks. In this work, we investigated the possibility of using TiO2 nanotube arrays that were grown using electrochemical anodization technique, as a micro/nano electrode for neural interfacing. The morphology of fabricated nanotube arrays were found to be significantly affected by the applied voltage. Annealing and doping of TiO2 nanotube arrays has been performed to improve the structural and electrical properties of the nanotube arrays. It was found that the annealing and doping with nitrogen improve the electrical conductivity of the nanotube arrays. Moreover, the tube diameter and length can be controlled by changing the applied voltage and that can significantly affect the biocompatibility of the nanotube arrays. It was observed that nitrogen doped nanotubes with morphology consisting of 61nm diameter, 25nm wall thickness and tube length of 2.25μm could be good candidate to be used as electrodes for biological interfacing. This is due to the fact that the nitrogen doped nanotubes with aforementioned morphology possess great properties necessary for effective biological interfacing such as low impedance, high capacitance and good biocompatibility. |
| Databáze: | OpenAIRE |
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