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. Author manuscript; available in PMC: 2016 Feb 16.
Published in final edited form as: Angew Chem Int Ed Engl. 2015 Jan 9;54(8):2525–2529. doi: 10.1002/anie.201410754

Figure 1.

Figure 1

(a) Schematic diagram of a rotating nanomotor sensor releasing molecules. (b) Scanning electron microscopy (SEM) images of a plasmonic nanorod for the nanomotor rotor made of a three layer structure with a Au-Ni-Au nanowire as the core, a silica coating, and a dense layer of Ag nanoparticles on the outer surface of silica, (c) a higher magnification SEM image shows the dense Ag nanoparticles grown on the silica. (d) Raman mapping of 1 μM R6G dispersed on a plasmonic nanomotor rotor showing essentially uniform SERS intensity on the surface.