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Abstract: The slippery liquid-infused porous surface(s) (SLIPS) that imitates the Nepenthes pitcher plant has proven to be highly versatile and can be combined with various surface characteristics such as dynamic response, antifouling, selective adhesion, and optical/mechanical tunability. In addition, the introduction of a lubricating fluid layer also gives it extremely low contact angle hysteresis and self-repairing properties, which further expands its application range. Currently, SLIPS has been proven to be suitable for many frontier fields such as aerospace, communications, biomedicine, and microfluidic manipulation. In this review, we explain the theoretical background of SLIPS and the preparation methods currently available, including the choice of substrate materials and lubricants, and we discuss the design parameters of the liquid injection surface and how to deal with the consumption of lubricants in practical applications. In addition, the paper focuses on current and potential applications, such as preventing pathogen contamination of and blood adhesion of medical equipment, manipulation of tiny droplets, and directional transportation of liquids. Finally, some weaknesses that appear when SLIPS is used in these applications are pointed out, which provides a new perspective for the development of SLIPS in the future.

湖北大学郭志光等 | 仿生灌油超滑表面的最新进展

本综述论文聚焦注液表面的最新研究进展。通过模仿猪笼草捕食机制制备的注液表面具有多种应用前景，并集数种表面性能于一体，如动态响应、防污性、选择性黏附以及光学/机械可调节性等。此外，由于润滑液的引入，表面具有极低的接触角滞后和自修复性能，进一步扩展了其应用范围。目前，注液表面已经广泛应用于航空航天、通信、生物医学以及微流体操控等多种前沿领域。本文介绍了注液表面的理论背景和现阶段的制备方法，包括基底材料和润滑剂的选择。讨论了注液表面的设计参数以及如何应对润滑剂在实际应用中的损耗。除此之外，还分析了注液表面的潜在应用，如防止医疗设备的病原体污染和血液黏附、微小液滴的操控和液体的定向运输等。最后，指出了注液表面在实际应用中存在的缺陷，为往后的发展提供方向。