| 초록 |
Strain sensors respond to mechanical deformations by the change of electrical characteristics. Many requirements are needed to make high-performance strain sensors including sensitivity, stretchability, response speed, stability, fabrication cost, and simplicity. Especially, highly sensitive and direction-selective strain sensors are needed for accurately detecting the human motion or matter detecting. We demonstrate the highly flexible, stretchable, and sensitive CNT-based strain sensor which is possible to detect with a direction-selective signal, fabricated by ultrasonic-nozzle spray. This strain sensor has an asterisk-structure, inducing the selective resistance changes with external deformations. The strain-sensing characteristics of the sensors including stretch/release response under static and dynamic loads, stretchability, hysteresis performance, and bendability have been investigated. |
