Researcher Fang Xiaodong of the Institute of Laser Optical Technology of the Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences and Fang Xiaodong, a professor at the School of Chemistry and Materials Science, University of Science and Technology of China, collaborated with the Ma Mingming team to design a humidity-driven and magnetic-field control using responsive polymers. The direction of movement of the flexible "puller", related research work published in the Journal of Materials Chemistry C titled "Magnetically directed soft actuators driven by moisture" (J. Mater. Chem. C, 2017, 5, 4129-4133). The first author of the paper was Gao Fengxian, a doctoral student at 2014 level in the Anfei Institute of Hefei Research Institute.
Polyol-doped polypyrrole films are sensitive to humidity and can perform continuous flipping motion driven by humidity. Using this response characteristic of polypyrrole films, the researchers designed a humidity-driven flexible “puller†by incorporating magnetic nanoparticles in the film. The external magnetic field can effectively control the direction of movement of the film. This flexible actuator can effectively convert the energy in the environment into kinetic energy and transport the goods to their destination.
In addition, based on the temperature-responsive polymer-PVDF, the researchers designed a water-vapour-activated pyroelectric nanogenerator that uses the condensation heat release and evaporation heat absorption of water vapor to achieve the temperature of the pyroelectric material. Fast-paced, no extra power consumption. Power supply performance is good, can get up to 145 volts output voltage, and can continuously drive low-power electronic devices, such as electronic watches. As a flexible energy conversion device, it can effectively collect waste heat from the environment and convert it into electricity for power generation. This work was published in Nano Energy (2016) 22, 19-26.
The above research work has been funded by the National Natural Science Foundation of China.
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