Temperature-Responsive Tensile Actuator Based on Multi-walled Carbon Nanotube Yarn
2016-10-24 18:09:20 조회수907
Hyunsoo Kim(1). Jae Ah Lee(1),(2) . Hyeon Jun Sim(1). Ma´rcio D. Lima(2). Ray H. Baughman(2). Seon Jeong Kim(1)* 1) Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul 04763, South Korea 2) The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083, USA 원문 링크 :


Many temperature indicators or sensors show color changes for materials used in food and medical fields. However, they are not helpful for a color-blind person or children who lack judgment. In this paper, we introduce simply fabricated and more useful low-temperature indicator (*30 C) for devices that actuates using paraffin-infiltrated multiwalled carbon nanotube (MWCNT) coiled yarn. The density difference of MWCNT yarn provides large strain (*330 %) when heat causes the melted polymer to move. Furthermore, the MWCNT yarn decreases the melting point of paraffin. These properties allow control of the actuating temperature. In addition, mechanical strength was enhanced by MWCNT than previously reported temperature-responsive actuators based on shape memory polymers. This simply fabricated temperature indicator can be applied in latching devices for medical and biological fields. 

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