| 학회 | 한국재료학회 |
| 학술대회 | 2015년 봄 (05/14 ~ 05/15, 구미코) |
| 권호 | 21권 1호 |
| 발표분야 | E. 환경/센서 재료 |
| 제목 | Development of conductive fibers and textile pressure sensors for wearable electronics |
| 초록 | Electronic textile (E-textile) where several electronic elements are integrated into fabrics have attracted remarkable attention with the development of advanced wearable and flexible devices. Textile pressure sensor, in particular, has been widely explored for several applications such as sensors, diagnostic, energy harvesting devices and human motion detection. To realize the high-performance textile pressure sensors, various types of pressure sensors such as capacitive, piezoelectric, piezoresistive and optical types have been investigated. Among the mentioned pressure sensor types, a capacitive pressure sensor has big advantages in terms of its simple design and analysis of the devices, high sensitivity, and excellent stability. The fabrication of large-area textile pressure sensors has been demonstrated, nevertheless, it has a lot of drawbacks, such as poor resilience, signal drift, and sensitivity due to the low electrical conductivity of the conductive fibers, it is difficult to apply these capacitive textile pressure sensors to wearable electronics. In this research, we present a highly sensitive textile pressure sensor with excellent sensitivity, durability and fast response time based on highly conductive fibers. Highly conductive fibers were fabricated using metal nanoparticles and elastomeric polymer composites through chemical reduction process, and then, elastomeric dielectric layers were coated on the surfaces of the conductive fibers. By using these dielectric layer-coated conductive fibers, capacitive type textile pressure sensor was successfully fabricated. The textile-based pressure sensor has high-performance compared to previously reported sensors and it could be pixelated to arrays in fabrics via the weaving method. The textile-based pressure sensors were successfully applied to operate robots wirelessly using the textile pressure sensor-embedded smart clothes. |
| 저자 | 이재홍, 서정목, 신세라, 이태윤 |
| 소속 | 연세대 |
| 키워드 | metal nanoparticles; electronic textile; pressure sensor; smart fabrics |
