Journal
APPLIED PHYSICS LETTERS
Volume 109, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4958737
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Funding
- German University in Cairo
- DAAD-BMBF
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We investigate the microswimming behaviour of robotic sperms in viscous fluids. These robotic sperms are fabricated from polystyrene dissolved in dimethyl formamide and iron-oxide nanoparticles. This composition allows the nanoparticles to be concentrated within the bead of the robotic sperm and provide magnetic dipole, whereas the flexibility of the ultra-thin tail enables flagellated locomotion using magnetic fields in millitesla range. We show that these robotic sperms have similar morphology and swimming behaviour to those of sperm cells. Moreover, we show experimentally that our robotic sperms swim controllably at an average speed of approximately one body length per second (around 125 mu m s(-1)), and they are relatively faster than the microswimmers that depend on planar wave propulsion in low-Reynolds number fluids. Published by AIP Publishing.
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