Analyzing the output performance of the knitted triboelectric nanogenerator based on the fish-scale shape using fast Fourier transform

Abstract

Knitted textiles as one kind of outstanding flexible substrate that have been universally applied in smart wearables. Structural design and output performance analysis of knitted-based triboelectric nanogenerators (TENGs) is significant research points. It is essential to provide inspiration in the TENGs applications. In this study, we designed and fabricated a fish-scale-based triboelectric nanogenerator using a formed knitted textile composed of commercial threads as a pair of contact areas. The deformation of the scale-shaped fabric was from the three-dimensional structure, which provided an effective contact area. We investigated the elastic yarn specification and scale-shaped distribution and analyzed their output performance in the frequency domain using fast Fourier transform. The result illustrated that the amplitude, phase, and power spectrum had obvious differences and can reflect the working states during the motions. The power spectrum could reach the maximum value of 280, which showed the potential for applications in the low-frequency motion.

Optimization the Stab Resistance and Flexibility of Ultra-High Molecular Weight Polyethylene Knitted Structure Fabric with Response Surface Method

“…Therefore, it is still a challenge to improve the stab-resistant performance while maintaining the original flexibility of the stab-resistant fabric. Currently, the matrix textiles used in stab-resistant materials are mainly divided into woven fabric, nonwoven, and knitted fabric [28][29][30], as shown in Figure 1b,c. The interweaving points between the yarn in woven plain structure fabrics and the nonwoven material are relatively unconstrained.…”

“…So, when a blade pierces a knitted fabric, the loop at the point of penetration quickly gathers the surrounding yarns to provide protection due to the abundant entanglements and connections. Specifically, Currently, the matrix textiles used in stab-resistant materials are mainly divided into woven fabric, nonwoven, and knitted fabric [28][29][30], as shown in Figure 1b,c. The interweaving points between the yarn in woven plain structure fabrics and the nonwoven material are relatively unconstrained.…”