A new type of nepenthes pitcher plant-inspired materials called slippery liquid infused porous surfaces (SLIPS) has been introduced recently that exhibit special anti-wetting performances to many liquids. SLIPS materials are prepared by infusing rough micro/nanostructured substrates with non-covalent bound liquid films of lubricating liquids, such as perfluoropolyethers, silicone oil or ionic liquid, creating smooth liquid-infused surfaces at the molecular-level. These surfaces are demonstrated to possess advantages of low sliding angle and contact angle hysteresis to various and complex liquids. SLIPS materials have board applications in self-cleaning coatings, marine antifouling coatings and biomedical materials because of their omniphobicity, self-healing, good optical transparency, extreme temperature pressure stability, as well as effective against adhesion of a wide range of substances including crude oil, blood, ice and bacterial biofilms. In recent years, SLIPS materials attract much attention of scientists because of the special surface wetting properties. In this review, the research mechanism and progress of designing and fabricating of SLIPS are introduced, including impregnation and swelling methods. Furthermore, the latest development of SLIPSs serve as omniphobic materials capable of meeting needs in anti-fouling, enhancing dropwise condensation, anti-frosting, anti-icing and oil-water separation are reviewed. Finally, the prospective tendency of SLIPS materials is proposed based on the current challenges.

Contents
1 Introduction
2 Mechanism and fabrication of SLIPS
2.1 SLIPS fabricated from etching
2.2 SLIPS fabricated from porous polymer membrane
2.3 SLIPS fabricated from chemical deposition
2.4 SLIPS fabricated from sol-gel
2.5 SLIPS fabricated from layer-by-layer
2.6 SLIPS fabricated from polymer swelling
3 Applications of SLIPS
3.1 Antifouling
3.2 Enhancing condensation
3.3 Anti-frosting and anti-icing
3.4 Oil-water separation
3.5 Other applications
4 Conclusion and outlook