A powerful dual-responsive soft actuator and photo-to-electric generator based on graphene micro-gasbags for bioinspired applications
| Autor: | Ying Hu, Pin Lu, Hua Zhai, Longfei Chang, Aifeng Xu, Ke Qi, Lulu Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene business.industry Bilayer Biomedical Engineering Soft robotics Electric generator 02 engineering and technology General Chemistry General Medicine 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention law Optoelectronics General Materials Science Artificial muscle 0210 nano-technology Actuator business Low voltage Triboelectric effect |
| Zdroj: | Journal of materials chemistry. B. 6(31) |
| ISSN: | 2050-7518 |
| Popis: | Soft actuators with large deformation and high output force in response to multi-stimuli are highly demanded for the development of biomimetic applications. Here, a bilayer actuator composed of spongy graphene with internal gasbag microstructures and the commercial polyimide adhesive tape is fabricated by a simple and fast method. This actuator produces large deformation, high output force, and dual-stimuli response, owing to the deformation of graphene micro-gasbags coupled with the thermal expansion of polyimide, and the electrothermal and photothermal properties of graphene. Experiments show that upon low voltage (16 V) stimulation the fabricated actuator with a length of 30 mm could generate a bending curvature of 0.55 cm−1 in 5 s, and can simultaneously produce high output force and lift an object 20 times heavier than its own weight. Moreover, a curvature of 0.45 cm−1 can be achieved for the actuator upon light irradiation for 10 s. Based on this bilayer actuator, diversely biomimetic motions including kicking a ball, grabbing a vegetable leaf, human hand movement, and creeping motion are realized, revealing its potential application in soft robotics, artificial muscles, wearable electronics, and biomedical devices. Besides the mechanical deformation output, a photo-to-electric generator is also assembled by associating this actuator with commonly triboelectric materials, further enriching the application range of soft actuators. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|