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Traditional rigid components are being replaced by stimulus\u2010responsive soft materials such as hydrogels and shape memory polymers, leading to the creation of dynamically responsive soft robots. In this study, the development of a bionic robot inspired by the shape of an octopus and the adsorptive properties of its tentacles, specifically tailored for targeted stimulation and pH sensing in the cervix, are presented. This approach involves the design of a soft, water\u2010based Janus adhesive hydrogel patch that adheres to specific parts of the cervix and responds to pH changes through external stimuli. The hydrogel patch incorporates inverse opal microstructures mimicking the legs of an octopus, to facilitate efficient and stable locomotion, unidirectional transport of biofluids, and pH\u2010responsive behavior. This miniature bionic robot showcases controlled adhesion and precise unidirectional fluid transport highlighting its potential for targeted stimulus response and pH sensing in the uterine cervical tract. This breakthrough opens new avenues for medical applications within the expanding field of soft\u2010bodied robotics.<\/jats:p>","DOI":"10.1002\/adhm.202400439","type":"journal-article","created":{"date-parts":[[2024,6,13]],"date-time":"2024-06-13T16:01:58Z","timestamp":1718294518000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["An Octopus\u2010Inspired Stimulus\u2010Responsive Structural Color Hydrogel for Uterus Cervical Canal Stent"],"prefix":"10.1002","volume":"13","author":[{"given":"Lihao","family":"Zhang","sequence":"first","affiliation":[{"name":"Center for Future Optoelectronic Functional Materials School of Computer and Electronic Information\/School of Artificial Intelligence Nanjing Normal University  Nanjing 210023 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lehao","family":"Ren","sequence":"additional","affiliation":[{"name":"Department of Critical Care Medicine Union 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