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@article{Demircali:2026:10.1002/adrr.70153,
author = {Demircali, AA and Yilmaz, A and Keshavarz, M and Zhao, J and Darzi, A and Yeatman, E and Temelkuran, B},
doi = {10.1002/adrr.70153},
journal = {Advanced Robotics Research},
title = {Autonomous Navigation of PollenInspired Magnetic Microrobots for Biomedical Applications},
url = {http://dx.doi.org/10.1002/adrr.70153},
year = {2026}
}
TY - JOUR
AB - <jats:p>Recent advances in microrobotics have expanded opportunities for biomedical delivery, but reliable navigation in complex microvascular environments remains challenging, particularly when continuous imaging is limited. Here we develop a sunflower polleninspired magnetic microrobot for targeted delivery and tissue engineering applications. Fabricated by twophoton polymerization and coated with nickel and titanium for magnetic actuation and biocompatibility, the 40 µm microrobot features an open, hydrodynamic geometry that facilitates cell adhesion through its surface topology. Finiteelement analysis supported this design rationale, showing 4.45fold lower translational drag and 4.1fold lower rotational hydrodynamic resistance than a solid spherical microrobot of the same outer diameter. We demonstrated stable rolling under physiologically relevant flow conditions, including upstream motion against opposing flow, and evaluated autonomous navigation in static and dynamic environments using a visionbased closedloop controller combined with reinforcement learning. The system enabled trajectory tracking, shortestpath selection, and multiturn maze navigation with microrobotscale error. By combining efficient rolling locomotion with navigation based on intermittent visual updates, this platform supports microrobot guidancein future minimally invasive interventions where continuous monitoring is restricted.</jats:p>
AU - Demircali,AA
AU - Yilmaz,A
AU - Keshavarz,M
AU - Zhao,J
AU - Darzi,A
AU - Yeatman,E
AU - Temelkuran,B
DO - 10.1002/adrr.70153
PY - 2026///
SN - 2943-9973
TI - Autonomous Navigation of PollenInspired Magnetic Microrobots for Biomedical Applications
T2 - Advanced Robotics Research
UR - http://dx.doi.org/10.1002/adrr.70153
UR - https://doi.org/10.1002/adrr.70153
ER -