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Mimicking Motor Proteins: Wall-Guided Self-Navigation of Microwheels.
Zhou, Dekai; Yue, Honger; Chang, Xiaocong; Mo, Yi; Liu, Ying; Chang, Hongjie; Li, Longqiu.
  • Zhou D; State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P. R. China.
  • Yue H; Key Laboratory of Micro-systems and Micro-Structures Manufacturing, Harbin Institute of Technology, Ministry of Education, Harbin, Heilongjiang 150001, P. R. China.
  • Chang X; State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P. R. China.
  • Mo Y; Key Laboratory of Micro-systems and Micro-Structures Manufacturing, Harbin Institute of Technology, Ministry of Education, Harbin, Heilongjiang 150001, P. R. China.
  • Liu Y; State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P. R. China.
  • Chang H; Key Laboratory of Micro-systems and Micro-Structures Manufacturing, Harbin Institute of Technology, Ministry of Education, Harbin, Heilongjiang 150001, P. R. China.
  • Li L; State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P. R. China.
ACS Nano ; 18(12): 8853-8862, 2024 Mar 26.
Article en En | MEDLINE | ID: mdl-38470259
ABSTRACT
Untethered micro/nanorobots (MNRs) show great promise in biomedicine. However, high-precision targeted in vivo navigation of MNRs into both deep and tiny microtube networks comes with big challenges because the present medical imaging cannot simultaneously meet the requirements of high resolution, high penetration depth, and high real-time performance. Inspired by intracellular motor proteins that transport cargo along cytoskeletal tracks, this study proposed a microtube inwall-guided targeted self-navigation strategy of magnetic microwheels (µ-wheels) that relies only on interactions with a microtube inwall, compared to conventional techniques that rely on real-time imaging and tracking of MNRs. By presetting the direction of the rotating magnetic field, the µ-wheel realized targeted navigation along the inwall. The propulsion principles behind it are elaborated. The targeted self-navigation of the µ-wheels in three-dimensional microtube networks, a spiral microtube, and an intrahepatic bile duct of a pig was conducted. Lastly, based on the strategy, a practical tumor early detection method was proposed and verified by means of magnetic resonance imaging. The microtube inwall-guided targeted self-navigation strategy reduces the dependence of in vivo targeted navigation of MNRs on the real-time performance of medical imaging technology and greatly contributes to the development of MNRs in biomedical applications.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Imagen por Resonancia Magnética Límite: Animals Idioma: En Año: 2024 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Imagen por Resonancia Magnética Límite: Animals Idioma: En Año: 2024 Tipo del documento: Article