Self-sensing intelligent microrobots for noninvasive and wireless monitoring systems  

作　　者：Zhongyi Li Kun Wang Chaojian Hou Chunyang Li Fanqing Zhang Wu Ren Lixin Dong Jing Zhao 

机构地区：[1]School of Mechatronical Engineering,Beijing Institute of Technology,100081 Beijing,China [2]Beijing Advanced Innovation Center for Intelligent Robots and Systems,Beijing Institute of Technology,100081 Beijing,China [3]Department of Biomedical Engineering,City University of Hong Kong,999077 Kowloon Tong,Hong Kong,China [4]School of Integrated Circuits and Electronics,Beijing Institute of Technology,100081 Beijing,China

出　　处：《Microsystems & Nanoengineering》2023年第4期233-245,共13页微系统与纳米工程（英文）

基　　金：This work was supported by the National Key R&D Program of China(Grant No.2019YFB1309701),the National Natural Science Foundation of China(NSFC,Grant Nos.3020021501839 and 61804009),and the Beijing Institute of Technology Research Fund Program for Young Scholars,Beijing Institute of Technology Analysis&Testing Center,and SUSTech Core Research Facilities.

摘　　要：Microrobots have garnered tremendous attention due to their small size,flexible movement,and potential for various in situ treatments.However,functional modification of microrobots has become crucial for their interaction with the environment,except for precise motion control.Here,a novel artificial intelligence(AI)microrobot is designed that can respond to changes in the external environment without an onboard energy supply and transmit signals wirelessly in real time.The AI microrobot can cooperate with external electromagnetic imaging equipment and enhance the local radiofrequency(RF)magnetic field to achieve a large penetration sensing depth and a high spatial resolution.The working ranges are determined by the structure of the sensor circuit,and the corresponding enhancement effect can be modulated by the conductivity and permittivity of the surrounding environment,reaching~560 times at most.Under the control of an external magnetic field,the magnetic tail can actuate the microrobotic agent to move accurately,with great potential to realize in situ monitoring in different places in the human body,almost noninvasively,especially around potential diseases,which is of great significance for early disease discovery and accurate diagnosis.In addition,the compatible fabrication process can produce swarms of functional microrobots.The findings highlight the feasibility of the self-sensing AI microrobots for the development of in situ diagnosis or even treatment according to sensing signals.

关 键 词：treatment PRECISE CONDUCTIVITY 

分 类 号：TB383[一般工业技术—材料科学与工程]