A Study on Changes of Sheet Resistance in Conductive Knit Fabrics Using Non-contact Measurement Method 


Vol. 24,  No. 5, pp. 1873-1878, May  2023
10.1007/s12221-023-00174-z


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  Abstract

In this study, conductive knit fabrics composed of the same conductive yarn and having various densities were prepared and the sheet resistance, which is electrical properties of the knit fabrics, were analyzed systematically using a non-contact measurement method. Through these approaches, it was confirmed that the non-contact measurement method used in this study can sufficiently reflect and provide the electrical properties of the conductive knit fabrics compared with the previously used four-probe method. In addition, with increase in the fabric density (wale and course), which means a structural change of the fabric, the sheet resistance of the conductive knit fabric gradually decreases, even though the fabrics all used the same conductive yarn. For example, the sheet resistance of the fabric with the smallest density was 0.83 Ω/sq, whereas another fabric with the highest density showed a sheet resistance of 0.40 Ω/sq. Interestingly, it is clearly found that the sheet resistance of all the conductive knit fabrics used in this study is enhanced with increase of the pressure applied to the knit fabric. For instance, in the case of sample with highest density, the sheet resistance of the knit fabric at 0 kPa, which is in its natural state illustrated as a wrinkled structure, was measured as 0.58 Ω/sq, but when the pressure increased to 1.0 kPa illustrated as a uniform structure without wrinkles, the sheet resistance of the knit fabric decreased to 0.40 Ω/sq. Furthermore, it is additionally confirmed that the density, applied pressure, and relative standard deviation (RSD) on the sheet resistance results of the conductive knit fabrics are closely related. For instance, as the density of the conductive knit fabrics and the applied pressure on the fabrics increase, the RSD on the sheet resistance significantly decreases.

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  Cite this article

[IEEE Style]

G. Yi, B. Ko, M. H. Jee, "A Study on Changes of Sheet Resistance in Conductive Knit Fabrics Using Non-contact Measurement Method," Fibers and Polymers, vol. 24, no. 5, pp. 1873-1878, 2023. DOI: 10.1007/s12221-023-00174-z.

[ACM Style]

Gyeongmin Yi, Bongkyun Ko, and Min Ho Jee. 2023. A Study on Changes of Sheet Resistance in Conductive Knit Fabrics Using Non-contact Measurement Method. Fibers and Polymers, 24, 5, (2023), 1873-1878. DOI: 10.1007/s12221-023-00174-z.

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