Ruan Limin, Zhao Yanjie, Chen Zihao, Zeng Wei, Wang Siliang, Liang Dong, Zhao Jinling
National Engineering Research Center for Analysis and Application of Agro-Ecological Big Data, Anhui University, No. 111 Jiulong Road, Hefei 230601, China.
School of Electronics and Information Engineering, Anhui University, No. 111 Jiulong Road, Hefei 230601, China.
Polymers (Basel). 2020 Mar 3;12(3):553. doi: 10.3390/polym12030553.
The thermoelectric (TE) fiber, based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), which possesses good flexibility, a low cost, good environmental stability and non-toxicity, has attracted more attention due to its promising applications in energy harvesting. This study presents a self-powered flexible sensor based on the TE properties of the hollow PEDOT:PSS fiber. The hollow structure of the fiber was synthesized using traditional wet spinning. The sensor was applied to an application for finger touch, and showed both long-term stability and good reliability towards external force. The sensor had a high scalability and was simple to develop. When figures touched the sensors, a temperature difference of 6 °C was formed between the figure and the outside environment. The summit output voltages of the sensors with 1 to 5 legs gradually increased from 90.8 μV to 404 μV. The time needed for the output voltage to reach 90% of its peak value is only 2.7 s. Five sensors of legs ranging from 1 to 5 were used to assemble the selector. This study may provide a new proposal to produce a self-powered, long-term and stable skin sensor, which is suitable for wearable devices in personal electronic fields.
基于聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT:PSS）的热电（TE）纤维具有良好的柔韧性、低成本、良好的环境稳定性和无毒特性，因其在能量收集方面的广阔应用前景而备受关注。本研究提出了一种基于中空PEDOT:PSS纤维热电特性的自供电柔性传感器。该纤维的中空结构采用传统湿纺法合成。该传感器应用于手指触摸，对外力表现出长期稳定性和良好的可靠性。该传感器具有高扩展性且易于开发。当手指触摸传感器时，手指与外部环境之间会形成6°C的温差。具有1至5条腿的传感器的峰值输出电压从90.8μV逐渐增加到404μV。输出电压达到其峰值的90%所需的时间仅为2.7秒。使用五条腿数从1到5的传感器来组装选择器。本研究可能为生产适用于个人电子领域可穿戴设备的自供电、长期稳定的皮肤传感器提供新的方案。
