孔磊、牟方志和马会茹等撰写的论文被Adv. Funct. Mater.正式接收发表
原文详细摘要如下：The development of multifunctional artificial cilia may inspire a new generation of intelligent biomimetic microdevices and microfluidic systems, but remains a great challenge nowadays. Here we show self-adaptive magnetic photonic nanochain cilia arrays (SMPNCAs) capable of achieving real-time and in-situ visual microenvironment detection and self-adaptive fluid pumping. By combining magnetic assembly and UV-assisted hydrogen bond-guided template polymerization in printing, SMPNCAs consisting of individual one-dimensional periodic structure of magnetic nanoparticles encapsulated in pH-responsive hydrogel shells, as an example, are demonstrated to be printed on a glass substrate with defined patterns in one step. The as-printed SMPNCAs exhibit real-time adjustable interparticle distance (lattice constant) and total length in response of the reversible volume change of the hydrogel shell with the pH value of the pumped fluids. Consequently, they can sense the surrounding pH variation in real time by in-situ displaying different diffracted color, and pump directional flows with self-adaptive flow velocity under a rotating magnetic field. Benefited from the integration of the facile, robust printing fabrication, structure-color-based fast sensing and self-adaptive fluid pumping, the SMPNCAs developed here promise a significant advance in biomimicry and microfluidic systems.