Fig. 1: Conventional optical tweezers and plasmonic tweezers (early work).
a Schematic illustration of conventional optical tweezers. Adapted with permission from Nature: ref. 1, Copyright 2003. b Fluorescence vs time, showing trapping of a 200-nm latex bead in water by plasmonic tweezers comprising an aperture in Au film. Reprinted with permission from ref. 2. Copyright 2004 American Chemical Society
