Ordered silicon nanorod arrays with controllable geometry and robust hydrophobicity |
Fig.#cod#x00A0;2. a Monolayer close-packed colloidal crystal templates prepared via self-assembly and thermal treatment. b Silica spheres leaving their original places and repositioning due to excessive etching in HF solution and capillary force, respectively. c Large connection area between the spheres and the substrate requires intense ultrasonication, which damages the metal mask. d Relationship between sintering temperature and critical sphere diameter. |