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Magnetic particle swarms were formed for selective embolization to address the low selectivity of the present embolization technique that is prone to cause complications such as stroke and blindness. We established an analytical model that describes the relationships between fluid viscosity, flow rate, branching angle, magnetic field strength, and swarm integrity, based on which an actuation strategy was developed to maintain the swarm integrity inside a targeted region under fluidic flow conditions. Experiments in microfluidic channels, ex vivo tissues, and in vivo porcine kidneys validated the efficacy of the proposed strategy for selective embolization.<\/jats:p>","DOI":"10.1126\/sciadv.abm5752","type":"journal-article","created":{"date-parts":[[2022,7,20]],"date-time":"2022-07-20T13:57:21Z","timestamp":1658325441000},"source":"Crossref","is-referenced-by-count":146,"title":["Microrobotic swarms for selective embolization"],"prefix":"10.1126","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6033-7639","authenticated-orcid":true,"given":"Junhui","family":"Law","sequence":"first","affiliation":[{"name":"Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada."},{"name":"Shenzhen Institute of Artificial Intelligence and Robotics for Society, Shenzhen, China."},{"name":"School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 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