Highly efficient chemically-driven micromotors with controlled snowman-like morphology

Chemical Communications : Chem Comm
Zameer Hussain ShahYongxiang Gao

Abstract

We report the synthesis of silver-based Janus micromotors that self-propel at 3.5 μm s-1 and speed up to 45 μm s-1 in 0.044 and 1.5 mM of H2O2, respectively, via ionic diffusiophoresis. Morphology optimization further accelerates the speed to 90 μm s-1, which leads to a force of 1 pN and a power of 0.1 fW, similar to biomolecular motors. Their efficiency reaches 10-5, at least two orders of magnitude higher than other chemically-driven micromotors. These micromotors hold great promises in various applications.

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Citations

Oct 22, 2021·ACS Applied Materials & Interfaces·Muhammad IkramYongxiang Gao

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Methods Mentioned

BETA
AFM

Software Mentioned

Matlab

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