Double-Fueled Janus Swimmers with Magnetotactic Behavior
Autor: | Miguel A. Ramos-Docampo, Verónica Salgueiriño, Brigitte Städler, Philipp Schattling |
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Rok vydání: | 2017 |
Předmět: |
Materials science
General Engineering General Physics and Astronomy Janus particles Context (language use) Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Self propulsion General Materials Science Janus 0210 nano-technology Inorganic nanoparticles |
Zdroj: | ACS Nano. 11:3973-3983 |
ISSN: | 1936-086X 1936-0851 |
Popis: | Self-propelled particles attract a great deal of attention due to the auspicious range of applications for which nanobots can be used. In a biomedical context, self-propelled swimmers hold promise to autonomously navigate to a desired location in an attempt to counteract cell/tissue defects either by releasing drugs or by performing surgical tasks. The vast majority of prior reports deal with single engine assemblies, often utilizing fuel molecules which are considered to be highly cytotoxic. Herein, we introduce two engines: (1) a motor which couples enzymes (i.e., glucose oxidase) and inorganic nanoparticles (i.e., platinum nanoparticles) to gain power and (2) a peptide-fueled trypsin motor. We demonstrate that both engines can induce enhanced diffusion properties of (Janus) particles using bioavailable and completely harmless fuel molecules. By combining both engines on the same carrier, we show self-propelled particles employing two independent engines, using two different fuels. A collaborative enhancement of the swimmer's diffusion properties upon powering-up both engines simultaneously is observed. Additionally, the incorporation of magnetic nanoparticles allows for the swimmer to move in a magnetic gradient upon applying an external magnetic field, yielding in directional motion of the double-fueled particles. These multiple-fueled biocompatible swimmers are a significant contribution to make them applicable in a biomedical context. |
Databáze: | OpenAIRE |
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