Bioinspired Ultrafast-Responsive Nanofluidic System for Ion and Molecule Transport with Speed Control
Bioinspired Ultrafast-Responsive Nanofluidic System for Ion and Molecule Transport with Speed Control
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DOI：
10.1021/acsnano.0c05156
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发表时间：
2020-10-27
期刊：
影响因子：
17.1
通讯作者：
Jiang, Lei
中科院分区：
文献类型：
--
作者：
Wang, Can;Wang, Dianyu;Jiang, Lei
设计一个智能的纳米流体系统来调节离子和分子等物质的传输，对于生物传感、药物输送和能量收集等领域的应用具有重要意义。然而，现有的纳米流体系统面临着分子和离子的传输速度不可控以及制备过程复杂、耐久性低和响应速度慢的挑战。在这里，我们展示了使用生物启发的铁磁流体为基础的纳米流体，可以促进多级超快响应的离子和分子的传输速度控制。具体而言，我们可逆地变形散装铁磁流体使用磁铁和湿/去湿的超亲水性纳米通道的外表面，用于建立一个智能运输系统。通过改变外部磁场的方向和强度，一种速度控制、超快速响应的分子运输（
The design of an intelligent nanofluidic system for regulating the transport of substances such as ions and molecules is significant for applications in biological sensing, drug delivery, and energy harvesting. However, the existing nanofluidic system faces challenges in terms of an uncontrollable transport speed for molecules and ions and also a complex preparation processes, low durability, and slow response rate. Herein, we demonstrate the use of a bioinspired ferrofluid-based nanofluid that can facilitate multilevel ultrafast-responsive ion and molecule transport with speed control. Specifically, we reversibly deform bulk ferrofluids using a magnet and wet/dewet the outer surface of superhydrophilic nanochannels for building a smart transport system. By changing the direction and strength of the external magnetic field, a speed control, ultrafast-responsive molecular transport (