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2篇 您的检索式:作者名="Shengping Che"
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1ZnO-based micromotors fueled by CO_(2):the first example of self-reorientation-induced biomimetic chemotaxis显示文摘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 the alternative biocompatible fuel of C0_(2);and further provide the first example of self-reorientation-induced biomimetic chemotaxis using them.The ZnO-based micromotors are highly sensitive to dissolved C0_(2) in water,which enables the corrosion of ZnO to continuously occur by providing H+through hydration.Thus,they can autonomously move even in water exposed to air based on self-diffusiophoresis.Furthermore,they can sense the local C0_(2) gradient and perform positive chemotaxis by self-reorientations under the phoretic torque.Our discovery opens a gate to developing intelligent micro/nanomotors powered by,and sensitive to,biocompatible atmospheric or endogenous gaseous chemicals for biomedical and environmental applications.Fangzhi Mou Qi Xie Jianfeng Liu Shengping Che Lamya Bahmane Ming You Jianguo Guan 2021National Science Review2021,8,11:3
2Light-Programmable Assemblies of Isotropic Micromotors显示文摘“Life-like”nonequilibrium assemblies are of increasing significance,but suffering from limited steerability as they are generally based on micro/nanomotors with inherent asymmetry in chemical composition or geometry,of which the vigorous random Brownian rotations disturb the local interactions.Here,we demonstrate that isotropic photocatalytic micromotors,due to the persistent phoretic flow from the lluminated to shadowed side rrespective of their Brownian rotations,experience lightprogrammable local interactions(reversibly from atraction to repulsion and/or alignment)depending on the direction of the incident lights.Thus,they can be organized into a variety of tunable nonequilibrium assemblies,such as apolar solids(i.e.,immobile colloidal crystal),polar liquids(ie.,phototactic colloidal stream),and polar solids(i.e.,phototactic colloidal crystal),which can further be“cut”into a predesigned pattern by utilizing the switching motor-motor interactions at superimposedlight edges.This work facilitates the development of active matters and motile functional microdevices.Shengping Che Jianhua Zhang Fangzhi Mou Xia Guo Joshua E.Kauffman Ayusman Sen Jianguo Guan 2022Research2022,,4:0
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