Micro-rocket robot with all-optic actuating and tracking in blood

查看全文 作　　者：Dengfeng [1]Li;Chao [1]Liu;Yuanyuan [1]Yang;Lidai [1,2]Wang;Yajing [1,2]Shen

机构地区：[1]Department of Biomedical Engineering,City University of Hong Kong,999077 Hong Kong,China;[2]City University of Hong Kong Shenzhen Research Institute,Shenzhen 518057,China

出　　处：《Light(Science & Applications)》索引2020年第9卷第1期,共10页

基　　金：supported by the National Natural Science Foundation of China(61922093,81627805,61805102);Research Grants Council of the Hong Kong Special Administrative Region(21205016,11215817,11101618);Science Technology and Innovation Commission of Shenzhen Municipality,China(JCYJ20170413140519030). 摘　　要：Micro/nanorobots have long been expected to reach all parts of the human body through blood vessels for medical treatment or surgery.However,in the current stage,it is still challenging to drive a microrobot in viscous media at high speed and difficult to observe the shape and position of a single microrobot once it enters the bloodstream.Here,we propose a new micro-rocket robot and an all-optic driving and imaging system that can actuate and track it in blood with microscale resolution.To achieve a high driving force,we engineer the microrobot to have a rocket-like tripletube structure.Owing to the interface design,the 3D-printed micro-rocket can reach a moving speed of 2.8 mm/s(62 body lengths per second)under near-infrared light actuation in a blood-mimicking viscous glycerol solution.We also show that the micro-rocket robot is successfully tracked at a 3.2-μm resolution with an optical-resolution photoacoustic microscope in blood.This work paves the way for microrobot design,actuation,and tracking in the blood environment,which may broaden the scope of microrobotic applications in the biomedical field. 关键词：structure ROBOT driving

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Micro-rocket robot with all-optic actuating and tracking in blood

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