Highly Sensitive and Robust Fiber Strain Sensor via Multiple Coating

IF 3.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2025-11-11 DOI:10.1007/s13391-025-00608-1

Kyusoon Pak, Yunseon Lee, Je Hyeong Kim, Minu Kim, Joo Yong Sim

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引用次数: 0

Abstract

We report a highly sensitive and durable fiber-type strain sensor (SCDC) fabricated via scalable dip-coating method using a styrene–isoprene–styrene (SIS)-modified multi-walled carbon nanotube (MWCNT) dispersion, stabilized with poly(3-dodecylthiophene) (P3DDT) to ensure uniform coating and prevent CNT aggregation. By optimizing the number of dip-coating cycles, five iterations were identified as ideal, resulting in a wide strain range of 54.7%, high linearity (R² = 0.972), and a stable gauge factor of 6.69. The sensor demonstrates excellent mechanical durability, with a consistent resistance response after 1,000 cycles under 30% strain and a low hysteresis ratio of 13.76%. When integrated into a wearable sleeve, the sensor reliably captured elbow motion with clear signal differentiation. This simple yet effective dip-coating strategy enables seamless integration of strain sensors into textiles, maintaining mechanical compliance without additional post-processing—paving the way for practical, garment-embedded e-textile applications.

Graphical Abstract

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基于多重涂层的高灵敏度和鲁棒性光纤应变传感器

我们报道了一种高灵敏度和耐用的纤维型应变传感器（SCDC），该传感器采用可扩展浸涂法，使用苯乙烯-异戊二烯-苯乙烯（SIS）修饰的多壁碳纳米管（MWCNT）分散体，用聚（3-十二烷基噻吩）（P3DDT）稳定，以确保均匀涂层并防止碳纳米管聚集。通过对浸涂循环次数的优化，确定了5次迭代是理想的，应变范围宽，为54.7%，线性度高（R2 = 0.972），稳定的测量因子为6.69。该传感器具有优异的机械耐久性，在30%应变下，在1000次循环后具有一致的电阻响应，迟滞率低至13.76%。当集成到一个可穿戴的套筒，传感器可靠地捕捉肘部运动清晰的信号区分。这种简单而有效的浸渍涂层策略可以将应变传感器无缝集成到纺织品中，无需额外的后处理即可保持机械一致性，从而为实际的服装嵌入式电子纺织品应用铺平了道路。图形抽象

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.