Rapid and controllable sliding of droplets on anisotropic superhydrophobic surface has significant meaning in advanced science and technologies, thus being widely studied in recent years. Herewith, we reported a fabrication of micro- and nano- fractal superhydrophobic surface patterned with micro hydrophilic channels using laser direct writing method. The sliding angle of droplets in the direction parallel to the channels is as low as 8°. While, in the perpendicular direction, droplets exhibit rather high sliding angle, even being pinned to the surface that is tilted to fully upright (sliding angle to be 90°). Such significant anisotropic property enables droplets slide along the pre-assigned stripe-shaped patterns rapidly and steadily, when a droplet is released on a slope. The guidance action still works even when the surface is inverted. Consequently, the patterned surface is suitably designed as a novel droplet manipulate device, which easily achieves effective weight lossless transportation of droplets.

液滴在各向异性超疏水表面上的快速可控滑动在先进科学技术中具有重要意义，因此近年来得到了广泛的研究。因此，我们报道了使用激光直接写入方法在微和纳米级分形的超疏水表面上形成微亲水通道的图案。液滴在平行于通道的方向上的滑动角低至8°。而在垂直方向上，液滴表现出相当高的滑动角，甚至被钉扎到倾斜到完全垂直的表面上（滑动角为90°）。当液滴在斜坡上释放时，这种显着的各向异性特性使液滴能够迅速且稳定地沿着预先指定的条纹状图案滑动。即使表面倒置，引导动作仍然有效。