Abstract
Robot technology has made great progress over the past few decades, and has found wide use in military, industrial and service fields. In recent years, there has been a dramatic increase in the demand for soft robots. However, as a key part, the development of soft actuators capable of low-energy actuation, multi-stimulation response, and large shape deformation is still challenging. In this work, we fabricated multiresponsive actuators based on modified electrospun films. The actuators provided the largest curvatures of 0.83 cm−1, 0.6 cm−1, and 1.05 cm−1, stimulated by humidity, light, and electricity, respectively. Furthermore, we designed a biomimetic application—a crawling robot—which demonstrates excellent potential applications of the actuator in soft robotics, artificial muscles, and the biomimetics field.
Highlights
Robot technology has made great progress over the past few decades, and has found wide use in military, industrial and service elds.[1,2,3] Traditional robots usually consist of rigid modules connected through kinematic pairs, each kinematic pair providing one or more degrees of freedom
PEDOT:PSS was drop-cast on the surface of CDCF which was subjected to air plasma treatment to increase the coefficient of hygroscopic expansion (CHE)
To investigate the actuation characteristic of the PEDOT/CDCF/biaxially oriented polypropylene (BOPP) actuator quantitatively when driven by humidity, we constructed transparent humidity-control chamber to monitor the actuation
Summary
Robot technology has made great progress over the past few decades, and has found wide use in military, industrial and service elds.[1,2,3] Traditional robots usually consist of rigid modules connected through kinematic pairs, each kinematic pair providing one or more degrees of freedom. All the movements of the moving pair combinations form the actuator at the end of the robot working space, and provide the advantage of control precision. The rigidity of the structure leads to poor environmental adaptability, and the movement in a complex unknown space is o en unstable and lacks exibility. Robots composed of exible material with multiple degrees of freedom, simple structure, less processing cost, and no internal skeleton, can mimic biological systems with lifelike motions (e.g., walkers, swimmers, rollers, grippers, tentacles),[3,4,5,6] which can accomplish complex motions in a relatively simple manner. Actuators, which respond to applied external stimuli such as thermal,[7] light,[8,9,10,11] pressure,[12,13,14] chemical,[15,16] electric[17,18,19,20] and humidity[21,22,23,24,25] or magnetic elds,[26,27,28] have been explored for biomimetic applications.[10,16,22,24]
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