当前位置:首页 > 研究组动态

牟方志、谢琦等撰写的研究论文被National Science Reviews接收

发布时间:2021-04-15

    祝贺牟方志、谢琦等撰写的研究论文“ZnO-based micromotors fueled by CO2: the first example of self-reorientation-induced biomimetic chemotaxis”被我国英文综合性学术期刊National Science Reviews《国家科学评论》(2019年IF: 16.693,在综合性学术期刊中仅排在Nature、Science之后列第三位)接收!

    人工趋化性微/纳米马达通过感知特定的化学物质浓度能主动“寻找”目标,但目前它们主要由生物不相容燃料驱动,自身的定向能力较弱,仅表现出伪趋化性(或先进的化学激活作用)。本文合成了ZnO基双面神微米马达,首次从实验上演示了它们可借助生物兼容的CO2燃料提供动力,自我定向诱导产生仿生趋化性。这种ZnO基双面神微米马达能对仅暴露于空气中的水中溶解的二氧化碳高度敏感,通过其水化作用提供H+而持续发生化学腐蚀行为,从而基于自扩散泳产生自主运动;尤其是它们能原位感知CO2浓度梯度,产生电渗透粘性扭矩自取向粒子,表现出正趋化性行为。这为开发智能微/纳米马达打开了一扇大门。由于这种微米马达能够用生物相容的大气或内源性气体化学物质驱动,并能灵敏地感知它们的原位浓度,因此可望应用于生物医学和环境领域。

    原文摘要如下:Synthetic chemotactic micro/nanomotors are envisioned to actively ‘seek out’ targets by following specific chemicals, but they are mainly powered by bioincompatible fuels and only show pseudochemotaxis (or advanced chemokinesis) due to their weak self-reorientation capabilities. Here we demonstrate that synthetic ZnO-based Janus micromotors can be powered by an alternative biocompatible fuel of CO2, and further provide the first example of self-reorientation-induced biomimetic chemotaxis using them. The ZnO-based micromotors are highly sensitive to the dissolved CO2 in water, which enables the corrosion of ZnO to continuously occur by providing H+ through hydration. Thus, they can autonomously move even in the water exposed to air based on self-diffusiophoresis. Furthermore, they can sense local CO2 gradient and perform positive chemotaxis by self-reorientations under the electroosmotic viscous torque. Our discovery opens a gate to develop intelligent micro/nanomotors powered by and sensitive to biocompatible atmospheric or endogenous gaseous chemicals for biomedical and environmental applications.


附件下载:   

Tel: 86-27-87218832

Fax: 86-27-87879466

E-mail: guanjg@whut.edu.cn