Mechanical and Electrical Characterization of Nanocomposites Liquid-Solid Conductive Ink on Polyethylene Terephthalate (PET) Substrate
With drastic development of wearable electronics have urged the studies on the conductive ink and flexible substrate. Wearable electronics consist of nanocomposites liquid-solid conductive ink and flexible substrate such as polyethylene terephthalate (PET). They were produced by using stencil printing method. This paper presents the mechanical and electrical characteristics of conductive ink with unloaded condition. The conductive ink was printed with four patterns, which were straight, curve, square and zig-zag patterns. Then, all four patterns were tested for their surface morphology, surface roughness, sheet resistivity and bulk resistivity. Surface morphology showed that conductive ink with 3 mm width had less granular particle formed than conductive ink with 1 mm width. Surface roughness of conductive ink with 3 mm width was smoother compared to 2 mm width and 1 mm width. Sheet resistivity and bulk resistivity results indicated that resistivity of all four patterns decreased with the increase of the conductive ink width. From the result, it showed that conductive ink with straight pattern has the best performance. Meanwhile, individual result for each pattern had its own function inside the circuit track.
Z. Wang, W. Wang, Z. Jiang, and D. Yu, “Low temperature sintering nano-silver conductive ink printed on cotton fabric as printed electronics,” Prog. Org. Coatings, vol. 101, pp. 604–611, 2016.
J. Kastner, T. Faury, H. M. Außerhuber, T. Obermüller, H. Leichtfried, M. J. Haslinger, E. Liftinger, J. Innerlohinger, I. Gnatiuk, D. Holzinger, and T. Lederer, “Silver-based reactive ink for inkjet-printing of conductive lines on textiles,” Microelectron. Eng., vol. 176, pp. 84–88, 2017.
W. Tang, Y. Chao, X. Weng, L. Deng, and K. Xu, “Optical Property and the Relationship between Resistivity and Surface Roughness of Indium Tin Oxide Thin Films,” vol. 32, pp. 680–686, 2012.
S. Son, Y. Cho, J. Rha, and C. Choi, “Fabrication of metal electrodes on fl exible substrates by controlled deposition of conductive nano-ink,” Mater. Lett., vol. 117, pp. 179–183, 2014.
E. Britannica, “Polyethylene Terephthalate.” Encyclopaedia Britannica, inc, pp. 1–3, 2019.
T. S. Tran, N. K. Dutta, and N. R. Choudhury, “Graphene inks for printed flexible electronics: graphene dispersions, ink formulations, printing techniques and applications,” Adv. Colloid Interface Sci., p. #pagerange#, 2018.
H. Mekaru, “Thermal and ultrasonic bonding between planar polyethylene terephthalate , acrylonitrile butadiene styrene , and polycarbonate substrates,” Int. J. Adhes. Adhes., vol. 84, no. April, pp. 394–405, 2018.
S. H. Kim, T. Min, J. W. Choi, S. H. Baek, J. Choi, and C. Aranas, “Ternary Bi2Te3–In2Te3–Ga2Te3 (n-type) thermoelectric film on a flexible PET substrate for use in wearables Sang,” Energy, vol. 3, 2018.
B. Marinho, M. Ghislandi, E. Tkalya, C. E. Koning, and G. De With, “Electrical conductivity of compacts of graphene , multi-wall carbon nanotubes , carbon black , and graphite powder,” Powder Technol., vol. 221, pp. 351–358, 2012.
S. Merilampi and P. Ruuskanen, “The characterization of electrically conductive silver ink patterns on flexible substrates,” Microelectron. Reliab., vol. 49, no. 7, pp. 782–790, 2009.
J. Wei, T. Vo, and F. Inam, “Epoxy/graphene nanocomposites – processing and properties: a review,” RSC Adv., vol. 5, pp. 73510–73524, 2015.
T. M. A. Maksoud, I. M. Elewa, H. Soliman, and P. Media, “Roughness parameters,” vol. 8, no. 2, pp. 263–276, 2016.