摘要：Discriminating between different liquids using surfaces with special wettability holds significant implications for both fundamental research and practical ***,current differentiation surfaces still struggle with challenges such as complex microstructure design,a limited detection range,and poor *** this study,we present a new platform for droplet discrimination achieved through a combination of groove structures and a liquid-like polydimethylsiloxane(PDMS)brushes *** PDMS brushes coating exhibits excellent stability and low adhesion across a wide range of liquids with surface tensions ranging from 27.5 to 72.8 mN/m,while the groove structure provides distinct energy barriers for droplet ***,liquids with varying surface tensions can be effectively discriminated,as evidenced by the increased sliding angles(SAs)observed as liquids with lower surface tension moving across the ***,we utilized a three dimensional(3D)model of the droplet developed using Surface Evolver,and conducted energy variation calculations during droplet sliding across the groove to analyze the SA differences among liquids with different surface ***,we proposed two simple differentiation platforms that successfully demonstrated effective droplet *** work introduces a novel strategy for droplet discrimination,offering innovative ideas for the design of functional *** findings may potentially be applied in other fields involving droplet manipulation,such as droplet-based microchemical reactions and bio-detection.