Fig. 5: Validation of theoretical model.
From: Evanescent field trapping and propulsion of Janus particles along optical nanofibers
a, b Simulated torque on a JP versus the gold cap orientation for various ONF radii, Rf. c Measured (markers with error bars) and simulated (markers connected via a spline interpolation) balance orientation as a function of Rf for 10- and 20-nm-thick gold coating. d Measured (markers with error bars) and simulated (lines) propulsion speed (reduced by the transmitted ONF power, P = 50 mW) for Janus and silica particles, as a function of the ONF radius. e Corresponding propulsion enhancement factors. Simulated VJP,z were scaled down by the factors indicated in the legend. Markers and error bars in (d) and (e), respectively indicate the mean values and the 50% standard deviation ranges obtained for 5 different JPs or 2–5 different SPs recorded in each ONF sample with Rf measured by SEM.
