Yazar "Galata, Sotiria F." seçeneğine göre listele

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    The Effect of Ambient Humidity on the Performance of a Wearable Textile Triboelectric Generator
    (Wiley-V C H Verlag Gmbh, 2023) Repoulias, Aristeidis; Ertekin, Mustafa; Galata, Sotiria F.; Pesez, Julien; Anicaux, Cyril; Vassiliadis, Savvas; Marmarali, Arzu
    Research on the triboelectric phenomenon and its use in so-called triboelectric generators (TEG) has often led scientists to study the various parameters involved in the production of electricity induced by the contact and friction of textile structures. Although the use of textile materials and structures to build textile-based TEGs is of particular interest, thanks to the advantages they can offer, however, the parameter of ambient humidity acts intensively on triboelectricity, affecting their electric power outcomes. This study investigates the performance of purely textile-based materials used in a TEG measuring device which combines vertical and sliding modes as if they are part of a wearable garment. Six single jersey-knitted textile samples, of identical yarn linear densities, are prepared. One material (para-aramid) is used as the reference sample and it is paired with the rest (cotton, modal, polyester, wool, and acrylic). Consequently, five material combinations are available for measuring under various relative humidity conditions. Through these test series which reflect how a textile-based TEG would operate under real conditions when embedded in a garment, the results reveal the big impact of ambient humidity on the triboelectric voltage outcome.
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    Performance Investigation of Textile Triboelectric Generators
    (E.U. Printing And Publishing House, 2022) Repoulias, Aristeidis; Galata, Sotiria F.; Kallivretaki, Argyro; Marmara, Arzu; Vassiliadis, Savvas
    With respect to the theory of the four Triboelectric Generators (TEGs) operational modes, a testing method is proposed. It describes and imitates more precisely the real conditions of the motion of the materials in a wearable clothing-based TEG. The phenomenon of triboelectricity is investigated from a clearly textile approach, using typical textile fabrics made by ordinary textile production methods and environmentally friendly materials. The performance investigation is based on the comparison of their triboelectric outcomes. It is of special interest that cotton fabrics showed an adequate electrical response, and among them, the twill 2/2 weave pattern offered the highest voltage outputs.
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    Sustainable energy potentials of textile-based triboelectric generators through simulation of real usage conditions
    (Springernature, 2024) Repoulias, Aristeidis; Galata, Sotiria F.; Vassiliadis, Savvas; Ertekin, Mustafa; Marmarali, Arzu
    This study investigates the triboelectric potentials of regular textiles in wearable energy generators, comparing different materials under real-world conditions to explore their effectiveness in generating voltage through natural movements. Over the last years, the use of eco-friendly and human skin-friendly regular textile materials has been of high interest in building textile-based triboelectric generators (TEGs). However, although the triboelectricity phenomenon can be commonly experienced when simply removing a cloth, most of the research applies considerable force loads between the triboelectric surfaces, a condition that is not met on garments. In this study, the primary objective was to compare the triboelectric potentials of six selected textile samples of identical knitting patterns, but different materials under a number of repeated cycles of contact, sliding, and separation, as they would behave if they were parts of a TEG on a garment under real usage conditions. All the sample combinations provided firmly different voltage outputs following exponential increases until they reached different plateaus of saturation. This work wishes to help toward the use of ordinary, eco-friendly, and human skin-friendly textile materials as options for wearable TEGs on garments.