Fig. 3.

Metal liquid-like self-ordered GNR arrays. a Optical image and b schematic of O-in-W encasing, c the corresponding water contact angle test, and d the hypothesized coexistence of S/O/W triple-phase boundary in a hydroxylated cuvette. f Optical image and g schematic of W-in-O encasing, h the corresponding water contact angle test, and i the hypothesized coexistence of S/O/W triple-phase boundary in fluorosilylated cuvette. e, j UV–Vis absorbance spectra of GNR arrays on O-in-W and W-in-O interfaces, respectively