So Dae-Sup, Kang Inpil, Huh Hoon, Lee Haiwon
Nanotechnology Information Analysis Team, Korea Institute of Science and Technology Information, Seoul 130-741, Korea.
J Nanosci Nanotechnol. 2010 May;10(5):3449-52. doi: 10.1166/jnn.2010.2338.
Electrical impedance properties of different type of carbon nanotubes based bulk electrodes have been investigated to develop chemical and biosensors. The bulk composite electrodes were fabricated with single-wall and multi-wall carbon nanotubes involving ionic conducting host polymer, Nafion, by using traditional solution-casting techniques. Under the various amounts of buffer solution, resistance and capacitance of the electrodes were measured with LCR meter and their characteristics due to ionic conducting host polymer were investigated by means of electrokinetic analysis. The capacitance values showed drastic change while the resistances only changed within few percent ranges. Electrical impedance measurement provided rapid and simple sensing mechanism to develop chemical sensor and biosensors with bulk nano electrodes.
为了开发化学传感器和生物传感器，对不同类型的基于碳纳米管的块状电极的电阻抗特性进行了研究。通过传统的溶液浇铸技术，用涉及离子导电主体聚合物Nafion的单壁和多壁碳纳米管制备了块状复合电极。在不同量的缓冲溶液下，用LCR仪表测量电极的电阻和电容，并通过电动分析研究了离子导电主体聚合物导致的电极特性。电容值显示出剧烈变化，而电阻仅在百分之几的范围内变化。电阻抗测量为开发具有块状纳米电极的化学传感器和生物传感器提供了快速且简单的传感机制。
