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Turn Number Dependent Motion Behavior of Catalytic Helical Carbon Micro/Nanomotors.

08:00 EDT 15th April 2019 | BioPortfolio

Summary of "Turn Number Dependent Motion Behavior of Catalytic Helical Carbon Micro/Nanomotors."

Helical micro/nanomotors (MNMs) can be propelled by external fields to swim through high viscous fluids like complex biological environment, which promise miniaturized robotic tools to perform assigned tasks at small scales. However, catalytic propulsion method, most widely adopted to drive MNMs, is seldom studied to actuate helical MNMs. Herein we report catalytic helical carbon MNMs (CHCM) by sputtering Pt onto helical carbon nano-coils (HCNC) that is in bulk prepared by a thermal chemical vapor deposition method. The Pt-triggered H2O2 decomposition can drive the MNMs by electrokinetic mechanism. The MNMs demonstrate versatile motion behaviors including both directional propulsion and rotation subjecting to the turn number of the carbon helix. Besides, due to the ease of surface functionalization on carbon and other properties such as biocompatibility and photothermal effect, the helical carbon MNMs promise multifunctional applications for biomedical or environmental application.

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Name: Chemistry, an Asian journal
ISSN: 1861-471X
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