Abstract
Exploring micromotors with outstanding propulsion efficiency is of great importance for aspects ranging from enhancement of performance to realization of applications. Improvements in propulsion efficiency lead to a lower fuel requirementand broadens the potential application areas for higher environment compatibility. In this article, a tubular micromotor with catalytic nanoparticle superlattices is fabricated through a simple epitaxial assembly method. A high surface-to-volume ratio due to the use of catalytic nanoparticles, a carbon outer layer and cooperative propulsion of multitubes enables the micromotor to move in biocompatible environment with a low concentration of fuel. In addition, magnetic nanoparticles are integrated into the micromotor to offer effective control of the direction of movement by using a magnetic field. This work provides a simple and low-cost fabrication method for a micromotor with high performance, which is expected to meet practical demands.
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