Jump to main content
Jump to site search

Issue 32, 2017
Previous Article Next Article

Visible-light driven Si–Au micromotors in water and organic solvents

Author affiliations

Abstract

We report the fabrication of tadpole-shaped Si–Au micromotors using glancing angle deposition. These micromotors are activated by visible light and can move in either deionized water or organic solvents without the addition of chemical fuels. By controlling the light intensity, the velocity of the micromotors can be modulated and the motion can be switched on and off reversibly. Gas chromatographic measurements and buffered oxide etch (BOE) experiments show that the mechanism of propulsion is self-electrophoresis modulated by the photoconductivity of the amorphous silicon segment. The direction of motion of the microswimmers can also be controlled by applying an external magnetic field if a ferromagnetic Ni layer is added in the fabrication process.

Graphical abstract: Visible-light driven Si–Au micromotors in water and organic solvents

Back to tab navigation

Supplementary files

Publication details

The article was received on 11 Jun 2017, accepted on 28 Jul 2017 and first published on 02 Aug 2017


Article type: Communication
DOI: 10.1039/C7NR04161F
Citation: Nanoscale, 2017,9, 11434-11438
  •   Request permissions

    Visible-light driven Si–Au micromotors in water and organic solvents

    D. Zhou, Y. C. Li, P. Xu, L. Ren, G. Zhang, T. E. Mallouk and L. Li, Nanoscale, 2017, 9, 11434
    DOI: 10.1039/C7NR04161F

Search articles by author

Spotlight

Advertisements