Laser-Assisted Tailoring of Surface Wettability - Fundamentals and Applications: A Critical Review

IF 3.5 Q2 Materials Science

Reviews of Adhesion and Adhesives Pub Date : 2019-12-01 DOI:10.7569/raa.2019.097312

Alina Peethan, V. K. Unnikrishnan, S. Chidangil, S. George

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引用次数: 10

Abstract

The control of ubiquitous wetting behavior that is determined by the surface free energy of the solid and the surface tension of the interacting liquid is an area of intense research, largely due to its applications in various sectors, ranging from healthcare to automotive industry. The failure and/or toxic nature of the conventionally employed chemical methods to engineer the surface free energy of solids paved the way for utilizing alternative techniques such as laser-based physical texturing of the surface to achieve the desired wettability behavior. This review provides insight into the implementation of lasers to engineer the surfaces of various kinds of materials and how the surface engineering manipulates their wetting characteristics based on the state of the art knowledge of the field. Various theories that explain the wetting behavior of droplets on the surfaces of homogeneous, heterogeneous, and complex structures are discussed with a special emphasis on the role of surface roughness. Further, the article focuses on the lasermatter interaction at different time scales and modification of the surfaces with different kinds of lasers (nano, pico, and femtosecond laser) and their applications. A critical analysis of the effects of experimental parameters such as laser fluence, repetition rate, laser wavelength, inter-pattern spacing on the experimentally observed wetting behavior in the recent literature is also presented. Emerging applications of laser structured surfaces in various fields, including biomedical, water harvesting, anti-bacterial, spectroscopic analysis, oil/water separation, etc. are discussed in detail.

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表面润湿性的激光辅助定制——基础与应用：综述

由固体的表面自由能和相互作用的液体的表面张力决定的无处不在的润湿行为的控制是一个深入研究的领域，这主要是由于它在从医疗保健到汽车工业的各个领域的应用。设计固体表面自由能的传统化学方法的失败和/或毒性为利用替代技术（例如基于激光的表面物理纹理）来实现所需的润湿性行为铺平了道路。这篇综述提供了对激光实现各种材料表面工程的见解，以及基于该领域的现有技术知识，表面工程如何操纵其润湿特性。讨论了解释液滴在均匀、非均匀和复杂结构表面上润湿行为的各种理论，特别强调了表面粗糙度的作用。此外，本文还重点研究了不同时间尺度下的激光与物质的相互作用，以及不同类型激光（纳米、微微和飞秒激光）对表面的改性及其应用。还对最近文献中实验观察到的激光注量、重复率、激光波长、图案间距等实验参数对润湿行为的影响进行了批判性分析。详细讨论了激光结构表面在生物医学、集水、抗菌、光谱分析、油水分离等领域的新兴应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reviews of Adhesion and Adhesives MATERIALS SCIENCE, MULTIDISCIPLINARY-

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期刊介绍： With the explosion of research activity and reports, the need for concise and critical reviews of topics of contemporary research interest is manifest. Reviews of Adhesion and Adhesives (RAA) provides in-depth, incisive, illuminating and thought-provoking reviews written by subject matter experts covering all aspects of adhesion science and adhesive technology. Each review will be imbued with the author’s experience so that the reader will be able to assimilate the research in the area discussed easily and will be able to apply it in practice.The journal has relevance to a myriad of industries including textiles, printing, coatings, aerospace, medical, nanotechnology, biotechnology, building and construction, and microelectronics. The topics to be covered include, but not limited to, basic and theoretical aspects of adhesion; modeling of adhesion phenomena; mecha¬nisms of adhesion; surface and interfacial analysis and characterization; unraveling of events at interfaces; characterization of interphases; adhesion of thin films and coatings; adhesion aspects in reinforced composites; formation, characterization and durability of adhesive joints; surface preparation methods; polymer surface modification; biological adhesion; particle adhesion; adhesion of metallized plastics; adhesion of diamond-like films; adhesion pro¬moters; contact angle, wettability· and adhesion; superhydrophobicity and superhydrophilicity. With regard to adhesives, RAA will include, but not limited to, green adhesives; novel and high-performance adhesives; and medical adhesive applications.