Titanium dioxide (TiO 2 ) possesses high photocatalytic activity, which can be utilized to power the autonomous motion of microscale objects. This paper presents the first examples of TiO 2 micromotors and micropumps. UV‐induced TiO 2 reversible microfireworks phenomenon was observed and diffusiophoresis has been proposed as a possible mechanism.
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Hong et al. (2010) studied this question.
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