designing superoleophobic surfaces

pancake shape without retracting. This allows a fourfold reduction in contact time compared with conventional complete rebound 1,10,11,12,13. We demonstrate that the pancake bouncing results from the rectification of capillary energy stored in the penetrated liquid into upward motion adequate to lift the drop. Moreover, the timescales for lateral drop spreading over the surface and for vertical motion must be comparable. In particular, by designing surfaces with tapered micro/nanotextures that behave as harmonic springs, the timescales become independent of the impact velocity, allowing th

Superoleophobicity is a phenomenon where the contact angles of various oil droplets with low surface tension on a solid surface are larger than 150°. In the past few years, there has been much growing interest in the design and application of superoleophobic surfaces. Such surfaces have great significance for both fundamental research and a variety of practical applications, including oil-repellent coatings, self-cleaning, oil/water separation, oil droplet manipulation, chemical shielding, anti-blocking, designing liquid microlens, oil capture, bioadhesion, guiding oil movement and floating on oil.

Superoleophobicity is a phenomenon where the contact angles of various oil droplets with low surface tension on a solid surface are larger than 150°. In the past few years, there has been much growing interest in the design and application of superoleophobic surfaces. Such surfaces have great significance for both fundamental research and a variety of practical applications, including oil-repellent coatings, self-cleaning, oil/water separation, oil droplet manipulation, chemical shielding, anti-blocking, designing liquid microlens, oil capture, bioadhesion, guiding oil movement and floating on oil.

PubMedGoogle ScholarMiljkovic, N. & Wang, E. N. Condensation heat transfer on superhydrophobic surfaces.MRS Bull.38, 397–406 (2013). Google ScholarPan, S. et al. Coatings super-repellent to ultralow surface tension liquids.Nat. Mater.17, 1040–1047 (2018). PubMedGoogle ScholarGao, L. & McCarthy, T. J. The lotus effect explained: two reasons why two length scales of topography are important.Langmuir22, 2966–2967 (2006). PubMedGoogle ScholarTuteja, A. et al. Designing superoleophobic surfaces.Science318, 1618–1622 (2007). PubMedGoogle ScholarQuéré, D. Wet

[35] TUTEJA A, CHOI W, MA M, et al. Designing superoleophobic surfaces[J]. Science, 2007, 318(5856): 1618-1622. [36] OHKUBO Y, TSUJI I, ONISHI S, et al. Preparation and characterization of super-hydrophobic and oleophobic surface[J]. Journal of Materials Science, 2010, 45(18): 4963-4969. [37] WANG H X, XUE Y H, DING J, et al. Durable, self-healing superhydrophobic and superoleophobic surfaces from fluorinated-decyl polyhedral oligomeric silsesquioxane and hydrolyzed fluorinated alkyl silane[J]. Angew Chem Int Ed, 2011, 50(48): 11433-11436. [38] KESSMAN A J, HUCKABY

A. Tuteja et al., Designing Superoleophobic Surfaces, Science (2007) 318: 1618-1622. Y. Lu et al., Preparation of Superoleophobic and Superhydrophobic Titanium Surfaces via an Environmentally Friendly Electrochemical Etching Method, ACS Sustainable Chem. Eng. (2013) 1: 102–109. T. Wong et al., Bioinspired self-repairing slippery surfaces with pressure-stable omniphobicity, Nature (2011) 477: 443–447. Y. Lu et al., Robust self-cleaning surfaces that function when exposed to either air or oil, Science (2015) 347: 1132-1135. 本文作者是英国伦敦大学学院化学系博士生陆遥,他们实

内容提示:DOI: 1 0.1 1 26/science.1 1 48326, 1 61 8 (2007);318 Science, et al.Anish TutejaDesigning Superoleophobic Surfaces This copy is for your personal, non-commercial use only. clicking here.colleagues, clients, or customers by , you can order high-quality copies for yourIf you wish to distribute this article to others The following resources related to this article are available online at here.following the guidelines can be obtained byPermission to republish or repurpose articles or portions of articles Upda 文档格式:PDF | 页数:6 | 浏览次数:28 | 上传日期:2014-06-17 07:49:26 | 文档星级:

近年来,在多个工程领域,如建筑和机械运输,在静态液体排斥性之上,还需要容易地移除附着液滴的能力,并且所以寻求动态液体排斥性如液滴滑落性。在喷墨技术的情况下,同样需要移除附着于喷嘴面的墨,并且动态液体排斥性是关键的参数。日本专利申请公布号07-197017中描述的结构针对在光滑表面上具有不小于90°的接触角的液体,并且未被用于对于在光滑表面上具有小于90°的接触角的液体获得液体排斥性。同时,未调查液滴滑落性。日本专利申请公布号2006-182014也未调查液滴滑落性。至于“设计超疏水表面(Designing Superoleophobic Surfaces) ”中描述的表面结构,虽然

Understanding the complementary roles of surface energy and roughness on natural nonwetting surfaces has led to the development of a number of biomimetic superhydrophobic surfaces, which exhibit apparent contact angles with water greater than 150 degrees and low contact angle hysteresis. However, superoleophobic surfaces—those that display contact angles greater than 150 degrees with organic liquids having appreciably lower surface tensions than that of water—are extremely rare. Calculations suggest that creating such a surface would require a surface energy lower than that of a

Superoleophobicity is a phenomenon where the contact angles of various oil droplets with low surface tension on a solid surface are larger than 150°. In the past few years, there has been much growing interest in the design and application of superoleophobic surfaces. Such surfaces have great significance for both fundamental research and a variety of practical applications, including oil-repellent coatings, self-cleaning, oil/water separation, oil droplet manipulation, chemical shielding, anti-blocking, designing liquid microlens, oil capture, bioadhesion, guiding oil movement and floating on oil.