Functional slippery surfaces have broad applications in engineering and bioengineering processes, such as water harvesting, photocatalysis, wastewater treatment and food industry. In this work, for the first time, we report the fabrication of a novel type of functional slippery solid surfaces via the self-assembly of a non-fluorine small molecule, γ-mercaptopropyldi(trimethylsiloxy)methylsilane (MD(SH)M), which possess liquid-like slippery features. This new strategy avoids the requirement and fabrication of complex micro-/nano-scale surface structures and infused lubricant oils in conventional slippery surfaces. The as-prepared functional MD(SH)M surfaces allow facile transport of bubbles in aqueous media and water drops in oil, as well as facilitate the self-assembly of nanoparticles from their aqueous suspensions. The transport of air bubbles and water drops is driven by the buoyancy force or gravity force, against the sliding resistance associated with the bubble-solid-water or drop-solid-oil three-phase contact line. The functional slippery surfaces with lower surface energy and contact angle hysteresis show higher velocity of transporting bubbles/drops under the same test conditions, demonstrating better slippery behavior. The as-prepared functional slippery solid surfaces allow the three-phase contact line to move more freely as compared to the conventional lubricant liquid-infused slippery surfaces. This research provides a new and facile strategy for the fabrication of novel slippery coatings without the need of complex micro-/nano-scale surface structures and infused lubricant oils, with great potential applications in many engineering and bioengineering processes wherever low friction forces are desired.

功能性光滑表面在工程和生物工程过程中具有广泛的应用，例如集水，光催化，废水处理和食品工业。在这项工作中，首先当时，我们报告了通过非氟小分子γ-巯基丙基二（三甲基甲硅烷氧基）甲基硅烷（MD（SH）M）的自组装，制备了新型的功能性光滑固体表面，该表面具有类似液体的光滑特征。这种新策略避免了在传统的光滑表面上对复杂的微米/纳米级表面结构和注入润滑油的需求和制造。所制备的功能性MD（SH）M表面允许气泡在水性介质中的容易运输和油中的水滴，并有助于纳米粒子从其水性悬浮液中自组装。气泡和水滴的运输由浮力或重力驱动，克服了与气泡-固体-水或液滴-固体-油三相接触线相关的滑动阻力。在相同的测试条件下，具有较低表面能和接触角滞后的功能性光滑表面显示出较高的气泡/液滴传输速度，表明具有更好的光滑性。与传统的注入润滑剂液体的光滑表面相比，所制备的功能性光滑固体表面允许三相接触线更自由地移动。这项研究为不需要复杂的微米/纳米级表面结构和注入润滑油的新型滑爽涂料的制备提供了一种新的简便策略，并且在许多需要低摩擦力的工程和生物工程过程中具有巨大的潜在应用前景。表现出更好的滑爽行为。与传统的注入润滑剂液体的光滑表面相比，所制备的功能性光滑固体表面允许三相接触线更自由地移动。这项研究为不需要复杂的微米/纳米级表面结构和注入润滑油的新型滑爽涂料的制备提供了一种新的简便策略，在许多需要低摩擦力的工程和生物工程过程中具有巨大的潜在应用前景。表现出更好的滑爽行为。与传统的注入润滑剂液体的光滑表面相比，所制备的功能性光滑固体表面允许三相接触线更自由地移动。这项研究为不需要复杂的微米/纳米级表面结构和注入润滑油的新型滑爽涂料的制备提供了一种新的简便策略，在许多需要低摩擦力的工程和生物工程过程中具有巨大的潜在应用前景。