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http://dx.doi.org/10.14695/KJSOS.2018.21.3.141

An Exploratory Study on the Structure of Fabric of Increasing Triboelectric Energy Harvesting by Applying Three-dimensional Embroidery Technique  

Yang, Jin-Hee (Institute of Symbiotic Life-TECH, Yonsei University)
Cho, Hyun-Seung (Institute of Symbiotic Life-TECH, Yonsei University)
Kim, Min-Ook (School of Mechanical Engineering, Yonsei University)
Kim, Jong-Baeg (School of Mechanical Engineering, Yonsei University)
Kim, Shin-Hye (Department of Clothing & Textiles, Yonsei University)
Lee, Joo-Hyeon (Department of Clothing & Textiles, Yonsei University)
Publication Information
Science of Emotion and Sensibility / v.21, no.3, 2018 , pp. 141-150 More about this Journal
Abstract
The purpose of this study is to investigate three-dimensional embroidery techniques for creating conductive fabric materials. Such techniques can increase the efficiency of energy harvesting by increasing the fabric's area during rubbing and brushing. We also investigate the fabric structure of the triboelectric energy harvesting type. Two experiments were conducted for this purpose. In Experiment I, the three-dimensional embroidery technique(satin technique, file technique) and the conductive fabric material(copper-based MPF, nickel-based MPF) were selected as the main variables affecting the efficiency of triboelectric energy harvesting from the human body. Four samples were fabricated according to a combination of two variables. In Experiment II, the harvesters fabricated by the three-dimensional embroidery method showing the highest efficiency were subjected to brushing processes and the voltages generated after processing were analyzed. As a result, in both conductive fabric materials, the pile embroidery fabric structure showed a higher efficiency than the satin structure. These results show the triboelectric energy harvesting principle, which is proportional to the charge density and the generated voltage. It can be seen that the structure of pile embroidery fabric with a large friction area is advantageous for increasing efficiency compared to satin embroidery-fabric structure with a relatively small friction area. Moreover, the energy harvesting efficiency after brushing was higher than that before processing due to the increased friction area, and it was found that the brushing method is advantageous for increasing the triboelectric-energy harvest.
Keywords
Triboelectric Energy Harvesting; Three-dimensional Embroidery Technique; Structure of Fabric; Conductive Fabric Material;
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