| 초록 |
E-textile is a representative technology applicable to smart clothing, which is integrated type of fabrics with electronic components to realize wearable computers. In early stage, it was realized by attaching various kinds of electronic devices on clothes. Recently, research is active on inherently textile-like devices such as fiber transistors and fiber displays based on yarn-type conductive fibers. The researches for e-textile under extreme conditions such as mechanical bending, folding, stretching, and washing, which memory‐containing clothes are also very active to extend its applications. Through our research on e-textile using conductive yarns, we have succeeded to develop the textile-type RRAM(resistive random access memory) composed of coated yarn with aluminum using solution process, and carbon fiber yarn by a typical weaving methods same as normal yarns. We also developed a strain sensor focusing on resistivity changing characteristics at the contact points between yarns along the stretching of knitted textile. Sensors were stretched in both the horizontal and vertical directions to demonstrate a change of on/off ratio of resistivity along the stretch. On/off resistance ratio decreased when stretched, and restored to the ratio before stretch when the textile was recovered. It was also proved that this characteristic is maintained when stretching and recovery are repeated along the cyclic test. We expect that the textile-type strain sensor developed in this study can be used as a strain sensor/motion sensor by applying to the joint part of clothing. |
