Figure 2

(a) Before adjusting, the two microwire segments AE and DF were located at the DMF-air interface and the microwire segment ED including GO-microheater BC was immersed in the GONs-DMF suspension. (b) After adjusting microwire, the microwire segment A′C including the GO-microheater BC and the microwire segment D′F′ were located at the DMF-air interface and microwire segment CD′ was immersed in the GONs-DMF suspension. Red arrows show the direction of light propagation.