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张健华、牟方志等撰写的研究论文被Nanoscale Advances接收

发布时间:2021-09-02

    祝贺张健华、牟方志等撰写的研究论文“Cooperative transport by flocking phototactic micromotors”被英国皇家化会(RSC)旗下的材料学期刊Nanoscale Advances接收!

微/纳米马达由于驱动力有限,单个马达往往很难去运载比自己大或重的货物。在本工作中,我们基于光响应扩散泳原理,用微米马达集群实现了对多个、多种大型货物粒子的协作运输。无论是在开放空间还是在复杂的微环境中,由于TiO2马达利用自发的电解质扩散泳吸引原理能形成集群。它们在紫外光照下,马达粒子间会产生扩散泳排斥相互作用,因而TiO2马达集群可以合作操控惰性粒子运动实现运输。到达目的地之后,通过控制紫外光的光照时间和光照方向,可以解离马达集群或者使其逆着货物方向运动,从而将货物进行卸载。本工作有望推动智能协作运输微纳米马达集群的发展和在药物运输和微操控领域的应用。

    原文摘要如下:Cargo delivery by micro/nanomotors provides enormous opportunities for micromanipulation, environmental cleaning, and drug delivery, etc. However, due to the limited driving force, single micro/nanomotors are usually difficult to transport cargoes much larger or heavier than themselves. Here, we demonstrate that flocking phototactic TiO2 micromotors can cooperatively transport multiple and different types of large cargoes based on light-responsive diffusiophoresis. Utilizing spontaneous diffusiophoretic attraction, flocking TiO2 micromotors can load large cargoes. Under UV light navigation, the flocking TiO2 micromotors cooperatively carry and transport the cargoes via collective diffusiophoretic repulsion in open space or complex microenvironments. After reaching the destination, the carried cargoes can also be unloaded from the flock and be deployed at a predetermined destination by disassembling or reversing the flock. This study may pave the way for developing intelligent swarming micro/nanorobots for cooperative targeting micromanipulation and advance their applications in drug delivery and microengineering.



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