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http://dx.doi.org/10.14695/KJSOS.2022.25.4.45

Enhancement of Penetration by Using Mechenical Micro Needle in Textile Strain Sensor  

Hayeong Yun (숭실대학교 스마트웨어러블공학과 )
Wonjin Kim (숭실대학교 유기신소재파이버공학과 )
Jooyong Kim (숭실대학교 유기신소재파이버공학과 )
Publication Information
Science of Emotion and Sensibility / v.25, no.4, 2022 , pp. 45-52 More about this Journal
Abstract
Recently, interest in and demand for sensors that recognize physical activity and their products are increasing. In particular, the development of wearable materials that are flexible, stretchable, and able to detect the user's biological signals is drawing attention. In this study, an experiment was conducted to improve the dip-coating efficiency of a single-walled carbon nanotube dispersion solution after fine holes were made in a hydrophobic material with a micro needle. In this study, dip-coating was performed with a material that was not penetrated, and comparative analysis was performed. The electrical conductivity of the sensor was measured when the sensor was stretched using a strain universal testing machine (Dacell Co. Ltd., Seoul, Korea) and a multimeter (Keysight Technologies, Santa Rosa, CA, USA) was used to measure resistance. It was found that the electrical conductivity of a sensor that was subjected to needling was at least 16 times better than that of a sensor that was not. In addition, the gauge factor was excellent, relative to the initial resistance of the sensor, so good performance as a sensor could be confirmed. Here, the dip-coating efficiency of hydrophobic materials, which have superior physical properties to hydrophilic materials but are not suitable due to their high surface tension, can be adopted to more effectively detect body movements and manufacture sensors with excellent durability and usability.
Keywords
Biological Signal Monitoring; CNT-based Sensor; Dip-coating Micro Needling Effect; Smart Textile Sensor; Strain Sensor;
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Times Cited By KSCI : 2  (Citation Analysis)
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