Spatial Patterning of Micromotor Aggregation and Flux.

ABSTRACT: Using a spatially varying light pattern with light activated semi-conductor based magnetic TiO₂ micromotors, we study the difference in micromotor flux between illuminated and non-illuminated regions in the presence and absence of an applied magnetic field. We find that the magnetic field enhances the flux of the motors which we attribute to a straightening of the micromotor trajectories which decreases the time they spend in the illuminated region. We also demonstrate spatially patterned light-induced aggregation of the micromotors and study its time evolution at various micromotor concentrations. Although light induced aggregation has been observed previously, spatial patterning of aggregation demonstrates a further means of control which could be relevant to swarm control or

SUBMITTER: Rivas DP 

PROVIDER: S-EPMC10827321 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature