Effects of Process Parameters and Isothermal Fatigue Cycling on Electromechanical Properties of Screen-printed Interconnect on Nonwovens for Wearable Electronics

Garakani, Behnam; Somarathna, K. U. S.; Khinda, Gurvinder Singh; Enakerakpo, Emuobosan; Alhendi, Mohammed; Poliks, Mark D.; Børgesen, Peter; Alizadeh, Azar

doi:10.1109/ectc32862.2020.00337

Cited by 8 publications

(1 citation statement)

References 12 publications

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“…The reliability of screen-printed nonwoven e-textiles was investigated through isothermal fatigue cycling at different test conditions. [186] A conductive polymer-coated elastomer was evaluated, and it was claimed that the woven structure showed high durability after a load test of 10 6 cycles. [187] Textronics are designed to be used for an extended period on the human body.…”

Section: Evaluation Of Textronicsmentioning

confidence: 99%

Textronics—A Review of Textile‐Based Wearable Electronics

et al. 2021

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Textronics contribute a significant part of Internet‐of‐Things (IoT), which empowers added functionalities by connecting smart clothing in a secure way for diverse applications. For the development of flexible and stretchable textile‐based electronics, a conductive material (yarn, fabric, etc.) must be used, and fabrication techniques play a vital role that significantly influences electronic textiles’ properties. Textile‐based sensors, electrodes, and other devices seem to be the favorite choice for continuous wearable monitoring due to their low cost, flexibility, and ease of embedding. Integrating smart capabilities into textiles provides substantial benefits in the fields of healthcare, sports, automobile, and military. These developments have a profound influence on the Fourth Industrial Revolution (4IR). This Review presents an in‐depth study of the current state of the art in the area of textile‐based electronics. The design, development, and evaluation techniques are discussed. Certain limitations and research gaps are also addressed regarding this emerging field. Critically, this Review is more application focused and indicates how the recent developments in electronic textiles will soon impact our lives. As these areas have typically been neglected in previous reviews, additional knowledge to the existing literature is provided by bridging the gap between the academic research and commercialization of wearable Textronics.

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Section: Evaluation Of Textronicsmentioning

confidence: 99%

Textronics—A Review of Textile‐Based Wearable Electronics

et al. 2021

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Fatigue behaviour of inkjet-printed silver interconnects on silica-coated mesoporous flexible PET substrate

Khinda¹,

Kokash²,

Alhendi³

et al. 2022

Flex. Print. Electron.

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Inkjet-printed silver conductive patterns are used in many flexible electronics applications ranging from health care, inventory management to aviation. Understanding of the electrical behavior of these printed patterns under different mechanical stresses and environment conditions is important for their real-life application use. The present work addresses a special system, silver interconnects on silica-coated porous polyethylene terephthalate (PET) substrate. The combination of the porosity, roughness, and a sintering temperature limited by the low glass transition temperature (Tg) of the PET leads to unique behaviors that may easily be misinterpreted. Thus, while the interconnect resistance does increase during stretching and decrease with unloading the resistance at zero load was lower after a given cycle than before it, and it continues to drop for quite a while in consecutive cycles. This effect was stronger for higher strain amplitudes, but it could be reduced or eliminated by preceding low temperature annealing. Humidity exposure and thermal cycling also led to major drops in resistance, albeit for different reasons, but both led to faster fatigue in subsequent mechanical deformation. Accounting for these behaviors in the assessment of life under realistic use conditions requires a mechanistic understanding.

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