134880 20260217205505.0 doi 10.1002/advs.202308561 sideral 138435 ART-2024-138435 eng Sartori, Paolo Photochemically Induced Propulsion of a 4D Printed Liquid Crystal Elastomer Biomimetic Swimmer 2024 Access copy available to the general public Unrestricted Underwater organisms exhibit sophisticated propulsion mechanisms, enabling them to navigate fluid environments with exceptional dexterity. Recently, substantial efforts have focused on integrating these movements into soft robots using smart shape‐changing materials, particularly by using light for their propulsion and control. Nonetheless, challenges persist, including slow response times and the need of powerful light beams to actuate the robot. This last can result in unintended sample heating and potentially necessitate tracking specific actuation spots on the swimmer. To tackle these challenges, new azobenzene‐containing photopolymerizable inks are introduced, which can be processed by extrusion printing into liquid crystalline elastomer (LCE) elements of precise shape and morphology. These LCEs exhibit rapid and significant photomechanical response underwater, driven by moderate‐intensity ultraviolet (UV) and green light, being the actuation mechanism predominantly photochemical. Inspired by nature, a biomimetic four‐lapped ephyra‐like LCE swimmer is printed. The periodically illumination of the entire swimmer with moderate‐intensity UV and green light, induces synchronous lappet bending toward the light source and swimmer propulsion away from the light. The platform eliminates the need of localized laser beams and tracking systems to monitor the swimmer's motion through the fluid, making it a versatile tool for creating light‐fueled robotic LCE free‐swimmers. info:eu-repo/grantAgreement/ES/DGA-FEDER/LMP221_21 info:eu-repo/grantAgreement/ES/DGA-FSE/E15-20R info:eu-repo/grantAgreement/EC/HORIZON EUROPE/101069436/EU/Morphing tubular structures for adaptive biomedical devices/Stripe-o-Morph info:eu-repo/grantAgreement/EC/H2020/956150/EU/Soft and Tangible Organic Responsive Materials progressing roBOTic functionS/STORM-BOTS This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 956150-STORM-BOTS info:eu-repo/grantAgreement/ES/ISCIII/CB06-01/00263 info:eu-repo/grantAgreement/ES/MICINN/CNS2022-135887 info:eu-repo/grantAgreement/ES/MICINN/CTQ2017-84087-R info:eu-repo/grantAgreement/ES/MCINN/PID2020-113003GB-I00 info:eu-repo/grantAgreement/ES/MICINN/PID2020-118485RB-I00 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 14.1 2024 MATERIALS SCIENCE, MULTIDISCIPLINARY 33 / 461 = 0.072 2024 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 15 / 147 = 0.102 2024 Q1 T1 CHEMISTRY, MULTIDISCIPLINARY 19 / 239 = 0.079 2024 Q1 T1 3.775 2024 Biochemistry, Genetics and Molecular Biology (miscellaneous) 2024 Q1 Chemical Engineering (miscellaneous) 2024 Q1 Physics and Astronomy (miscellaneous) 2024 Q1 Materials Science (miscellaneous) 2024 Q1 Medicine (miscellaneous) 2024 Q1 Engineering (miscellaneous) 2024 Q1 18.2 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Yadav, Rahul Singh Universidad de Zaragoza Barrio, Jesús del Universidad de Zaragoza (orcid)0000-0002-5380-6863 DeSimone, Antonio Sánchez-Somolinos, Carlos (orcid)0000-0003-3900-2866 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 11, 25 (2024), 2308561 [12 pp.] Adv. sci. Advanced Science 2198-3844 4240291 http://zaguan.unizar.es/record/134880/files/texto_completo.pdf Versión publicada 2612372 http://zaguan.unizar.es/record/134880/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:134880 articulos driver 2026-02-17-20:23:18 ARTICLE