作者：Wendong Liu, Xueyao Liu, Siyuan Xiang, Yixin Chen, Liping Fang, and Bai Yang
關鍵字：chamfer nanocylinder arrays, inclined etching, superoleophobic, anisotropic, chemical-heterogeneous
論文來源：期刊
具體來源：Nano Research 2016, 9(10): 3141–3151
發(fā)表時間：2016年
A functional interface based on silicon chamfer nanocylinder arrays (CNCAs)
was successfully fabricated by carrying out secondary etching of silicon
nanopillar arrays via a facile inclined etching method. The structure of the
novel CNCAs was finely modulated by varying the nanopillar array structure
and the etching conditions. The underwater oil wetting behavior of this
CNCAs-based interface can be easily modulated from superoleophilic (oil contact
angle (OCA) of ~8.13°) state to superoleophobic (OCA of ~163.79°) state by
modifying the surface using different substances. Moreover, a reversible
transformation of underwater oil wetting behavior from superoleophobic (OCA
of ~155.67°) state to oleophilic (OCA of ~31.27°) state was achieved by grafting
a temperature-responsive polymer onto this specific asymmetric structure. The
functional interface exhibited isotropic wetting behavior under certain oleophilic
conditions. Chemically heterogeneous structures, obtained via asymmetry
modification of CNCAs, exhibited amphiphobic properties while maintaining
their anisotropic wetting ability.