| 초록 |
We fabricated a three dimensional textile structure (TDTS) and used it as a mechanical stress carrier for piezoelectric materials. TDTS is used as a polyester yarn and is fabricated by inserting monofilament between the fiber layers through double-needle-bar Raschel knitting machine. In this study, we confirmed that TDTS improves the piezoelectric performance by transferring external stress to the piezoelectric material, just like the nanostructure with increased surface area as reported in previous studies. In compressive behavior, the TDTS was divided into four stages, and the monofilament was observed to have a spring-like elastic motion. TDTS was applied to the PVDF film, the piezoelectric material, and fabricated a piezoelectric sensor. In order to optimize the sensor, the length and density of the monofilament were adjusted to analyze the compression and bending motion. The piezoelectric sensors fabricated in this manner, were applied to pressure and wearable sensor. |
