Impact of Segmented Magnetization on the Flagellar Propulsion of Sperm-Templated Microrobots

Autor: Marilena Vendittelli, Sumit Mohanty, Anke Klingner, Sarthak Misra, Juliane Simmchen, Veronika Magdanz, Jacopo Vivaldi, Islam S. M. Khalil
Přispěvatelé: Man, Biomaterials and Microbes (MBM), ​Basic and Translational Research and Imaging Methodology Development in Groningen (BRIDGE), ​Robotics and image-guided minimally-invasive surgery (ROBOTICS), TechMed Centre, Biomechanical Engineering
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Medical robotics
Microrobots
Flagellar propulsion
Materials science
Science
General Chemical Engineering
biohybrid microrobots
Flow (psychology)
General Physics and Astronomy
Medicine (miscellaneous)
Thrust
02 engineering and technology
Propulsion
010402 general chemistry
01 natural sciences
Biochemistry
Genetics and Molecular Biology (miscellaneous)
flagellar propulsion
magnetic actuation
Quantitative Biology::Cell Behavior
Protein filament
Computer Science::Robotics
Magnetization
General Materials Science
Physics::Biological Physics
Full Paper
Deformation (mechanics)
General Engineering
Mechanics
Full Papers
021001 nanoscience & nanotechnology
equipment and supplies
0104 chemical sciences
Magnetic field
sperm cells
Magnetic nanoparticles
nanoparticles
0210 nano-technology
human activities
Zdroj: Advanced Science, Vol 8, Iss 8, Pp n/a-n/a (2021)
Advanced Science
Advanced science, 8(8):2004037. Wiley-VCH Verlag GmbH & Co. KGaA
Advanced science, 8(8):2004037. Wiley-VCH Verlag
ISSN: 2198-3844
Popis: Technical design features for improving the way a passive elastic filament produces propulsive thrust can be understood by analyzing the deformation of sperm‐templated microrobots with segmented magnetization. Magnetic nanoparticles are electrostatically self‐assembled on bovine sperm cells with nonuniform surface charge, producing different categories of sperm‐templated microrobots. Depending on the amount and location of the nanoparticles on each cellular segment, magnetoelastic and viscous forces determine the wave pattern of each category during flagellar motion. Passively propagating waves are induced along the length of these microrobots using external rotating magnetic fields and the resultant wave patterns are measured. The response of the microrobots to the external field reveals distinct flow fields, propulsive thrust, and frequency responses during flagellar propulsion. This work allows predictions for optimizing the design and propulsion of flexible magnetic microrobots with segmented magnetization.
Sperm‐templated flexible magnetic microrobots are categorized based on the location and combination of their magnetic segments. The different magnetization profiles lead to distinct wave patterns once exposed to rotating 3D magnetic fields. This results in a variety of frequency responses, flow fields surrounding the microrobots and propulsive thrust force. The article gives indications for the design of flexible magnetic microrobots.
Databáze: OpenAIRE
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