Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 25, Issue 18, Pages 2763-2770Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201500015
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Funding
- German Science Foundation (DFG)
- Volkswagen Foundation [86 362]
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Spermbots are biocompatible hybrid machines that consist of microtubes which are propelled by single spermatozoa and have promising features for powering nano and microdevices. This article presents three approaches on how to improve the performance of such spermbots. First, 20 mu m microtubes produce faster spermbots compared to the previously reported 50 mu m long microtubes. Furthermore, biofunctionalization by microcontact printing and surface chemistry of biomolecules on the inner tube surface improve the coupling efficiency between sperm cell and microtube, and the addition of caffeine results in a speed boost of the sperm-driven micromotor.
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