Superhydrophilic (superwetting) surfaces: A review on fabrication and application

Otitoju, Tunmise Ayode; Ahmad, Abdul Latif; Ooi, Boon Seng

doi:10.1016/j.jiec.2016.12.016

Cited by 248 publications

(128 citation statements)

References 214 publications

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“…Etching, including chemical etching, electrochemical etching, reactive ion etching (RIE), etc., is commonly used for micro‐/nanostructure fabrication. Chemical etching is usually accomplished in acidic or alkaline bath . For example, Kim et al fabricated superhydrophobic surfaces from austenitic stainless steel (AISI 304) using HF etching and fluoride modification.…”

Section: Fabrication Of Micro‐/nanostructurementioning

confidence: 99%

“…Surface modification can selectively alter the characteristic of the surface, such as surface energy, roughness, wettability/antiwettability, hydrophobicity/hydrophilicity, surface charge, functionality, and biocompatibility . Therefore, it is facilitating the vast investigation in biomedical/chemical analysis, cell culture, self‐cleaning, oil–water separation, etc.…”

Section: Surface Modification Of the Micro‐/nanostructurementioning

confidence: 99%

“…Recently, superwettability such as superhydrophobicity, superhydrophilicity and superolephobicity have been used for numerous applications in liquid manipulation such as water harvesting, antifogging, oil/water separation, and self‐cleaning . As we have mentioned above, it is insufficient for a flat substrate to obtain superwettability state by only altering the chemical composition.…”

Section: Interaction Between Surface and Liquidmentioning

confidence: 99%

“…So these creatures had been major sources from which researchers got inspiration for science and technology. Starting from the bioinspired interfaces that simply mimicked the concept of living creatures to newly developing materials with more delicate microscale and nanoscale structures, and reasonably, with high‐performance liquid manipulation capabilities, micro‐/nanostructured interfaces had been reported and found their applications in various areas, including research, daily life, medication, industry and environment …”

Section: Introductionmentioning

confidence: 99%

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Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Duan

Zheng

Zhao

et al. 2019

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Understanding the relationship between liquid manipulation and micro‐/nanostructured interfaces has gained much attention due to the wide potential applications in many fields, such as chemical and biomedical assays, environmental protection, industry, and even daily life. Much work has been done to construct various materials with interfacial liquid manipulation abilities, leading to a range of interesting applications. Herein, different fabrication methods from the top‐down approach to the bottom‐up approach and subsequent surface modifications of micro‐/nanostructured interfaces are first introduced. Then, interactions between the surface and liquid, including liquid wetting, liquid transportation, and a number of corresponding models, together with the definition of hydrophilic/hydrophobic, oleophilic/olephobic, the definition and mechanism of superwetting, including superhydrophobicity, superhydrophilicity, and superoleophobicity, are presented. The micro‐/nanostructured interface, with major applications in self‐cleaning, antifogging, anti‐icing, anticorrosion, drag‐reduction, oil–water separation, water collection, droplet (micro)array, and surface‐directed liquid transport, is summarized, and the mechanisms underlying each application are discussed. Finally, the remaining challenges and future perspectives in this area are included.

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Section: Fabrication Of Micro‐/nanostructurementioning

confidence: 99%

Section: Surface Modification Of the Micro‐/nanostructurementioning

confidence: 99%

Section: Interaction Between Surface and Liquidmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Duan

Zheng

Zhao

et al. 2019

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“…[11,53] Physical methods are usually applied to obtain relatively homogeneous films, such as physical vapor deposition, spin coating, dip coating, and spray coating. [32,52,[54][55][56][57][58][59][60][61] Besides homogeneous films, the phase-separation method can be used to generate heterogeneous films with simple patterns like circles.…”

Section: Introduction Of the Fabrication Methods To Generate Slpl Intmentioning

confidence: 99%

Superlyophilic Interfaces and Their Applications

et al. 2017

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Superlyophilic interfaces denote interfaces displaying strong affinity to diverse liquids, including superhydrophilic, superoleophilic, and superamphiphilic interfaces. When coming in contact with these interfaces, water or oil droplets tend to spread completely with contact angles close to 0°, presenting versatile applications including self‐cleaning, antifogging, controllable liquid transport, liquid separation, and so forth. Inspired by nature, scientists have developed various kinds of artificial superlyophilic (SLPL) interfaces in the past decades. In terms of dimensional characteristics, the artificial SLPL interfaces can be divided into four categories: i) 0D particles, whose dispersibility or catalytic performance can be notably enhanced by superlyophilicity; ii) 1D micro‐/nanofibers or nanotubes/channels, which can efficiently transfer liquids with SLPL interfaces; iii) 2D flat SLPL interfaces, on which different functional molecules can be deposited uniformly, forming ultrathin and smooth films; and iv) 3D structures, which can be obtained by either constructing 0D, 1D, or 2D SLPL materials separately or directly fabricating random SLPL frameworks, and can always be used as functional coatings or bulk materials. Here, natural and artificial SLPL interfaces are briefly introduced, followed by a short discussion of the limit between lyophilicity and lyophobicity, and then a snapshot of methods to generate SLPL interfaces is given. Specific focus is placed on recent achievements of constructing SLPL interfaces from zero to three dimensions. Following that, broad applications of SLPL interfaces in commercial areas will be introduced. Finally, a short summary and outlook for future challenges in this field is presented.

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Polymer Nanofibers

Mandal

Song

Zeng

et al. 2023

Encyclopedia of Polymer Science and Technology

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The aim of this article is to provide an overview of nanofibers' properties, functionality enhancement, and applications. In order to achieve this, the significant properties of nanofibers were first demonstrated. Based on this demonstration, it was concluded that nanofibers have potential use for a wide range of applications. Additionally, the functionality enhancements of nanofibers through their physical and chemical modifications were reviewed. This functionality enhancement process helps to effectively apply the nanofibers in the engineering and medical fields. The applications of nanofibers in different hi‐tech engineering and medical fields were described. This article identified various gaps and limitations associated with nanofibers' applications and suggested further research directions. Based on this article, it has been found that nanofibers could be produced with several properties and structures including shape, size, and strength. As a result, nanofibers could be applicable in high‐tech engineering and medical sectors such as tissue engineering, sensors, and enzyme carrier. As nanofiber is a porous media, the applicability of nanofibers could be widened in different fields like protective apparel, lightweight military products, and so on. This article can help polymer engineers to improve and extend the applicability of nanofibers in evolving engineering and medical fields. In turn, this article could help to advance the field of high‐tech engineering and medical field for better human life.

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Superhydrophilic (superwetting) surfaces: A review on fabrication and application

Cited by 248 publications

References 214 publications

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Superlyophilic Interfaces and Their Applications

Polymer Nanofibers

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