Sun Yunyu, Wang Hao, Jiang Jiwei, Zhang Hui, Liu Limei, Zhang Keying, Song Bo, Dong Bin
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
School of Electronic Science & Engineering, Southeast University, Nanjing 210096, China.
Nanomaterials (Basel). 2024 Mar 14;14(6):517. doi: 10.3390/nano14060517.
Inspired by the collective behaviors of active systems in nature, the collective behavior of micromotors has attracted more and more attention in recent years. However, little attention has been paid to the collective behavior of the immobilized micromotor, i.e., the micropump. In this paper, a unique pentacene-based micropump is reported, which demonstrates dynamic collective behavior activated by white light irradiation. The light irradiation may generate the photochemical reactions between pentacene and water, leading to the electroosmotic flow. As a result, this micropump is capable of pumping the surrounding solution inward along the substrate surface based on the electroosmosis mechanism. Intriguingly, the inward pumping causes the agglomeration of the tracer particles on the surface of the micropump. In addition, the aggregation can migrate following the change in the light irradiation position between two adjacent micropumps. Based on the aggregating and migrating behaviors of this pentacene-based micropump, we have achieved the conductivity restoration of the cracked circuit.
受自然界中活性系统集体行为的启发，微马达的集体行为近年来受到越来越多的关注。然而，固定化微马达即微泵的集体行为却很少受到关注。本文报道了一种独特的并五苯基微泵，它展示了由白光照射激活的动态集体行为。光照射可能会引发并五苯与水之间的光化学反应，从而导致电渗流。结果，这种微泵能够基于电渗机制将周围溶液沿基底表面向内泵送。有趣的是，向内泵送会导致示踪颗粒在微泵表面聚集。此外，这种聚集会随着两个相邻微泵之间光照射位置的变化而迁移。基于这种并五苯基微泵的聚集和迁移行为，我们实现了断裂电路的导电性恢复。
