Highly aligned carbon nanotube (CNT) sheets have been successfully applied to a number of interesting devices because of their distinctive properties. In this paper, aligned CNT sheets were fabricated and their orientation-dependent impedance properties were investigated in detail. Perpendicularly aligned CNT sheets showed both resistive and capacitive responses, which differed from those of horizontally aligned CNT sheets. Moreover, CNT-CNT junction dominant electrical transport is discussed, and a new concept for a capacitive-impedance sensor is also demonstrated. This work contributes to better understanding of the orientation-dependent impedance characteristics of aligned CNT sheets, and should facilitate practical applications.

由于其独特的特性，高度对齐的碳纳米管（CNT）板已成功应用于许多有趣的设备。在本文中，制备了对齐的CNT片，并详细研究了其取向相关的阻抗特性。垂直排列的CNT片显示出电阻和电容响应，这与水平排列的CNT片不同。此外，讨论了CNT-CNT结支配的电传输，并介绍了一种用于电容阻抗传感器的新概念。这项工作有助于更好地理解对齐的CNT片的取向相关阻抗特性，并应有助于实际应用。