Li Dianming, Guo Fengyun, Cui Zhimin, Zhou Jie, Zhai Yunzhu, Du Yajie, Liu Jingchong, Wang Nü, Zhao Yong
Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China.
Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China.
ACS Appl Mater Interfaces. 2020 Nov 25;12(47):53503-53509. doi: 10.1021/acsami.0c15764. Epub 2020 Nov 10.
The rapid response movement caused by the Marangoni effect, a surface tension gradient-induced mass transfer behavior, has spurred considerable promise for diverse applications from microrobots and microreactors to smart drug delivery. Herein, we fabricated an aligned hollow fiber swimmer that showed self-propel movement on a water surface based on the Marangoni effect. By rational designing of an aligned hollow microstructure and an optimized geometrical shape, this swimmer can move continuously for more than 600 s and the maximum angular velocity can reach 22 rad·s. The movement process of the swimmer is clearly monitored by infrared imaging and the process fluid migration. Moreover, this swimmer exhibited a highly controllable motion mode induced by a magnetic field and a concentration gradient. We designed a novel continuous motion system under the heat conversion from solar energy illumination into mechanical energy. This swimmer shows potential application prospects in controlled cargo transportation and convenient energy conversion systems.
由马兰戈尼效应引起的快速响应运动，一种表面张力梯度诱导的传质行为，已经在从微型机器人、微反应器到智能药物输送等各种应用中展现出了巨大的前景。在此，我们制造了一种排列整齐的中空纤维游动体，它基于马兰戈尼效应在水面上表现出自主推进运动。通过合理设计排列整齐的中空微结构和优化几何形状，这种游动体能够连续移动超过600秒，最大角速度可达22弧度·秒⁻¹。通过红外成像和过程流体迁移清晰地监测了游动体的运动过程。此外，这种游动体表现出由磁场和浓度梯度诱导的高度可控运动模式。我们设计了一种在太阳能光照转化为机械能的热转换下的新型连续运动系统。这种游动体在可控货物运输和便捷能量转换系统中显示出潜在的应用前景。
