Skip to main content
. Author manuscript; available in PMC: 2019 Oct 23.
Published in final edited form as: ACS Nano. 2018 Sep 27;12(10):10383–10392. doi: 10.1021/acsnano.8b05824

Figure 3.

Figure 3.

Directed nanoparticle transport via control of light polarization. A series of time-evolved dark-field optical images show the polarization-controlled (a) linear transport and (b) circular transport of single nanoparticles of 300 nm nanoparticles based on rationally designed AuNR arrays with thermal coupling. T indicates the time. The gray rectangular boxes outline the AuNRs. The red dash circles outline the spots of heating laser beam on the substrates. The laser beam is normal to the substrates with its polarization directions indicated by arrows denoted with E. The brightest spots reveal the nanoparticle positions. Centroid tracking of (c) linear transport and (d) circular transport based on panels a and b. The insets of panels c and d show the SEM of the AuNR pair and AuNR triangle, respectively. Scale bars in panels a and b are 500 nm.