Hindrance of semiconductor course of — static — solved with the only real of a shoe — ScienceDaily


The analysis crew led by Professor Ju-Hyuck Lee of the Division of Vitality Science and Engineering at DGIST (President Yang Kuk) developed a static prevention expertise utilizing a triboelectric nanogenerator by collaborative analysis with Dr. Wanchul Seung of International Know-how Analysis at Samsung Electronics. The findings of this examine facilitate improved and extra environment friendly static prevention with commercialization potential by increasing the appliance vary of triboelectric nanogenerators.

Current developments in semiconductors and small digital elements have elevated the curiosity in static prevention, as static harm to small elements results in an elevated defect price. At present, firms use a mix of assorted anti-static merchandise corresponding to wired grounding wristbands, antistatic mats, sneakers, and ionizers. Nevertheless, these strategies lead to elevated tools prices and operational inconveniences. Subsequently, an environment friendly and easy static-prevention methodology is required.

The analysis crew targeted on the reason for static situations. The human physique is mostly static owing to the electrical potential distinction between the physique and an object when each are available in contact. The reason for this electrical potential distinction has been present in latest research on triboelectric collection between supplies. As a result of the human pores and skin is on the optimistic (+) facet of the triboelectric collection, it turns into positively charged (anode) when it contacts sometimes used objects corresponding to sneakers and garments, sharply growing the physique electrical potential to optimistic (+), inflicting static. The measurement outcomes of the analysis crew confirmed that the electrical potential of the physique elevated by greater than 100 V after strolling for roughly 10 s.

As an answer, a way for transmitting unfavourable fees to the physique was developed. Utilizing a triboelectric nanogenerator, the bodily vitality generated by physique actions, corresponding to strolling, may be transformed into electrical vitality. A rectifier supplies a unfavourable cost to the physique. The crew noticed that the electrical potential of the physique decreased to a unfavourable worth. The crew additionally confirmed that the speed of lower within the physique electrical potential varies based mostly on the output (voltage, present, and cost) of the triboelectric nanogenerator, and the sort and floor space of the discharger. A static prevention system with an acceptable triboelectric nanogenerator was utilized to the only real of the shoe utilizing the aforementioned variables. Consequently, a rise within the electrical potential of the physique was prevented. That is considerably extra environment friendly than current wi-fi antistatic wristbands available in the market.

Professor Ju-Hyuck Lee of the Division of Vitality Science and Engineering at DGIST acknowledged, “This examine supplies a extremely cost-efficient methodology with high-commercialization potential and is predicted to successfully forestall static with out inflicting inconvenience to work in comparison with the prevailing static prevention tools.”

This examine was performed with help from the Ministry of Science and ICT Nationwide Analysis Basis of Korea (NRF). The findings of this examine had been revealed in “Nano Vitality,” one of many top-ranked worldwide tutorial journals in vitality engineering (first creator: Cheoljae Lee, mixed grasp’s and doctoral program college students of the Division of Vitality Science and Engineering).

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Supplies offered by DGIST (Daegu Gyeongbuk Institute of Science and Know-how). Be aware: Content material could also be edited for fashion and size.


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