Plasmonic gold nanorods can be trapped in liquids and rotated at kHz frequencies using circularly-polarized optical tweezers. Introducing tools for Brownian dynamics analysis and light scatteringspectroscopy leads to a powerful system for research and application in numerous fields of science.
Andrén, D., Karpinski, P., Käll, M. Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System. J. Vis. Exp. (136), e57947, doi:10.3791/57947 (2018).