Video_6_Redox Reaction Triggered Nanomotors Based on Soft-Oxometalates With High and Sustained Motility.AVI (4.22 MB)

Video_6_Redox Reaction Triggered Nanomotors Based on Soft-Oxometalates With High and Sustained Motility.AVI

Download (4.22 MB)
media
posted on 04.05.2018 by Apabrita Mallick, Abhrajit Laskar, R. Adhikari, Soumyajit Roy

The recent interest in self-propulsion raises an immediate challenge in facile and single-step synthesis of active particles. Here, we address this challenge and synthesize soft oxometalate nanomotors that translate ballistically in water using the energy released in a redox reaction of hydrazine fuel with the soft-oxometalates. Our motors reach a maximum speed of 370 body lengths per second and remain motile over a period of approximately 3 days. We report measurements of the speed of a single motor as a function of the concentration of hydrazine. It is also possible to induce a transition from single-particle translation to collective motility with biomimetic bands simply by tuning the loading of the fuel. We rationalize the results from a physicochemical hydrodynamic theory. Our nanomotors may also be used for transport of catalytic materials in harsh chemical environments that would otherwise passivate the active catalyst.

History

References

Licence

Exports