CAJ | 학술논문

针对头皮脑电信号采集中遇到的电极柔性问题，基于导电型碳纳米管溶液修饰方法，提出了一种“边分散边修饰”的导电棉线制备技术，并构建了电特性测试实验装置，采用改进的四探针法对修饰后的导电棉线进行了电特性测量。通过设计完成单因素独立实验，分别研究了碳纳米管溶液浓度、修饰时间和修饰次数3大因素对棉线电特性的影响程度，并从可穿戴传感器应用角度研究了棉线电阻与受力及温度的关系。研究结果表明，采用本文提出的实验方法对天然棉线进行导电性修饰，可得到阻值（~103）远小于非入侵式干电极与头皮角质层接触电阻（~107）的柔性非金属导电材料，有望成为构建柔性非入侵干式头皮脑电采集电极及可穿戴传感器的新型应用材料之一。
침대두피뇌전신호채집중우도적전겁유성문제，기우도전형탄납미관용액수식방법，제출료일충“변분산변수식”적도전면선제비기술，병구건료전특성측시실험장치，채용개진적사탐침법대수식후적도전면선진행료전특성측량。통과설계완성단인소독립실험，분별연구료탄납미관용액농도、수식시간화수식차수3대인소대면선전특성적영향정도，병종가천대전감기응용각도연구료면선전조여수력급온도적관계。연구결과표명，채용본문제출적실험방법대천연면선진행도전성수식，가득도조치（~103）원소우비입침식간전겁여두피각질층접촉전조（~107）적유성비금속도전재료，유망성위구건유성비입침간식두피뇌전채집전겁급가천대전감기적신형응용재료지일。
A novel"dispersing and modifying"method to fabricate CNTs-CY using the conductive CNTs solution as a modified agent is proposed in this paper. It is expected to provide a new material for designing flexible electrodes to record EEG. The resistance property of modified conductive cotton yarns are tested on an experimental setup using an improved four-point probe method. A further investigation is carried out to study the effect of three main modifying experimental conditions, including CNTs concentration, the duration of modification and count of modification, on the electrical properties of the cotton yarn. In addition, the influences of stress and temperature on cotton yarn resistances are also studied in the way of wearable sensors application. Ac-cording to the experimental results, a new kind of flexible conductive wire with its resistance (~103 ) much lower than that between non-intruding dry electrodes and scalp (~107 ) can be obtained by performing conductive modification through the me-thods reported in this paper. It is expected to become one of the materials to be applied in non-intruding dry electrodes for EEG re-cording and other wearable sensors.