Beijing National Laboratory for Condensed Matter, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Nano Lett. 2011 Nov 9;11(11):4636-41. doi: 10.1021/nl202132m. Epub 2011 Oct 7.
Here we report a novel single-walled carbon nanotube (SWNT) based bimorph electromechanical actuator, which consists of unique as-grown SWNT films as double electrode layers separated by a chitosan electrolyte layer consisting of an ionic liquid. By taking advantage of the special hierarchical structure and the outstanding electrical and mechanical properties of the SWNT film electrodes, our actuators show orders-of-magnitude improvements in many aspects compared to previous ionic electroactive polymer (i-EAP) actuators, including superfast response (19 ms), quite wide available frequency range (dozens to hundreds of Hz), incredible large stress generating rate (1080 MPa/s), and ultrahigh mechanical output power density (244 W/kg). These remarkable achievements together with their facile fabrication, low driving voltage, flexibility, and long durability enable the SWNT-based actuators many applications such as artificial muscles for biomimetic flying insects or robots and flexible deployable reflectors.
在这里，我们报告了一种新型的基于单壁碳纳米管（SWNT）的双压电体机电致动器，它由独特的原生 SWNT 薄膜作为双电极层组成，由包含离子液体的壳聚糖电解质层隔开。利用 SWNT 薄膜电极的特殊分层结构和优异的电学和力学性能，与以前的离子电活性聚合物（i-EAP）致动器相比，我们的致动器在许多方面都有了数量级的提高，包括超快速响应（19 毫秒）、相当宽的可用频率范围（几十到几百赫兹）、难以置信的大应力产生速率（1080 MPa/s）和超高机械输出功率密度（244 W/kg）。这些显著的成就，以及其简单的制造工艺、低驱动电压、灵活性和长耐久性，使得基于 SWNT 的致动器在仿生飞行昆虫或机器人的人造肌肉和灵活可展开反射器等方面有许多应用。
