Aligned Single Walled Carbon Nanotubes for Strain Sensor

Single walled carbon nanotube shows excellent chemical and physical properties and it has been extensively explored for novel applications. It has been shown that single walled carbon nanotube can be used to improve sensitivity of sensors such as bio sensors, gas sensors and mechanicals sensor by its unique properties. As a mechanical sensor, a mechanical force deforms the single walled carbon nanotubes and changes its electrical properties such as resistivity. The deformation results in changing of electrical structure such as band gap of single walled carbon nanotubes. In this study, we fabricate a strain sensor using single walled carbon nanotubes with an efficient structure. The structure contains aligned and multiple numbers of single walled carbon nanotubes to raise sensitivity of the strain sensor. The structure fabricated in this study is much reliable and efficient compared to the sensor with individual single walled carbon nanotube.