Multicomponent rotational nanomotors consisting of Pt-coated TiO 2 nanoarms grown upon ≈2.01-μm-diameter silica microbeads designed by dynamic shadowing growth are presented. When exposed to H 2O2, the structures rotate about an axis through the center of the microbead and perpendicular to the TiO2 nanoarm at a rate of 0.15Hz per % H2O2 concentration. The rotational frequency increases parabolically when the surface tension of the solution is altered by the addition of sodium dodecyl sulphate; both relationships are explainable by a nanobubble-ejection model.
|Original language||English (US)|
|Number of pages||5|
|State||Published - Oct 16 2009|
- Dynamic shadowing growth
ASJC Scopus subject areas
- Materials Science(all)