固体润滑国家重点实验室（LSL）知识库

Lotus leaf-inspired superhydrophobic, fish scale-inspired underwater
superoleophobic, and the switchable superwetting surfaces have been
broadly developed by entire modification with water-repellent, waterloving,
and smart components, respectively. Inspired by beetles, here
a strategy of fractional modification is proposed to construct dual
superlyophobic surfaces that have both superhydrophobic and
underwater superoleophobic properties. Specifically, copper-based
coatings on various substrates are fractionally modified by adjusting
the concentration of perfluorinated mercaptan. The obtained dual
superlyophobic surfaces display mutual advantages like using either
superhydrophobic or underwater superoleophobic materials without
any continuous external stimulus, for example on-demand oil–water
separation. In theory, the distinctive dual superlyophobic state exists in
a narrowrange of surface chemistry, and thus needs elaborate surface
modification. This discovery will facilitate the extension of the surfaces
with completely opposite superwettability to enjoy the superiority in
interfacial issues and applications.