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Nanomaterials
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Advanced Bioinspired Nanomaterials with Superwettability
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Advanced Bioinspired Nanomaterials with Superwettability

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: 15 July 2024 | Viewed by 4777

Special Issue Editor

Dr. Jiale Yong

E-Mail Website
Guest Editor
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230027, China
Interests: femtosecond laser microfabrication; controlling the wettability of solid surfaces; bio-inspired superwettability-based applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wettability is one of the important physical and chemical properties of solid surfaces, mainly depending on the surface chemical composition and structures. Among them, surfaces with special wettability are particularly attractive, including superhydrophilic surfaces, superhydrophobic surfaces, superoleophilic surfaces, superoleophobic surfaces, superaerophilic surfaces, superaerophobic surfaces, and super-slippery surfaces. Inspired by the phenomenon of superwettability in Nature, a variety of microfabrication techniques have been used to prepare superwetting materials; these include machining methods, photolithography, chemical etching, template replication, plasma etching, chemical vapor deposition, electrochemical methods, sol-gel methods, electrospinning, electrochemical deposition, self-assembly, spray/dip coating, 3D printing, etc. The prepared superwetting materials have been widely applied in anti-liquid wetting, self-cleaning, droplet manipulation, oil-water separation, lab-on-a-chip, anti-ice/fog/snow, cell engineering, antifouling, water/fog collection, liquid patterning, anti-corrosion, underwater drag reduction, buoyancy enhancement, etc. The realization of more complicated and subtle superwetting surfaces and the development of more practical applications have many opportunities and challenges.

This Special Issue presents recent developments of different superwetting surfaces, mainly focusing on their classification and design principles, the relationship between different types of superwettabilities, and the emerging applications of artificial superwetting materials.

Dr. Jiale Yong
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • surface wettability
  • superhydrophobic surfaces
  • superhydrophilic surfaces
  • superoleophobic surfaces
  • superaerophobic surfaces
  • super-slippery surfaces
  • solid/liquid/gas interaction

Published Papers (3 papers)

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Research

10 pages, 2518 KiB  
Article
Scalable Wettability Modification of Aluminum Surface through Single-Shot Nanosecond Laser Processing
by Chi-Vinh Ngo, Yu Liu, Wei Li, Jianjun Yang and Chunlei Guo
Nanomaterials 2023, 13(8), 1392; https://doi.org/10.3390/nano13081392 - 17 Apr 2023
Cited by 3 | Viewed by 1225
Abstract
Conversion of a regular metal surface to a superhydrophobic one has great appeal because of the wide range of potential applications such as anti-fouling, anti-corrosion, and anti-icing. One promising technique is to modify surface wettability by laser processing to form nano-micro hierarchical structures [...] Read more.
Conversion of a regular metal surface to a superhydrophobic one has great appeal because of the wide range of potential applications such as anti-fouling, anti-corrosion, and anti-icing. One promising technique is to modify surface wettability by laser processing to form nano-micro hierarchical structures with various patterns, such as pillars, grooves, and grids, followed by an aging process in the air or additional chemical processes. Surface processing is typically a lengthy process. Herein, we demonstrate a facile laser technique that converts the surface wettability of aluminum from inherently hydrophilic to hydrophobic and superhydrophobic with single-shot nanosecond laser irradiation. A single shot covers a fabrication area of approximately 19.6 mm2. The resultant hydrophobic and superhydrophobic effects persisted after six months. The effect of the incident laser energy on the surface wettability is studied, and the underlying mechanism of the wettability conversion through single-shot irradiation is suggested. The obtained surface shows a self-cleaning effect and the control of water adhesion. The single-shot nanosecond laser processing technique promises a fast and scalable method to produce laser-induced surface superhydrophobicity. Full article
(This article belongs to the Special Issue Advanced Bioinspired Nanomaterials with Superwettability)
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17 pages, 9346 KiB  
Article
Fluorine-Free, Highly Durable Waterproof and Breathable Fibrous Membrane with Self-Clean Performance
by Jinchao Zhao, Teng Zhang, Youmu Li, Leping Huang and Youhong Tang
Nanomaterials 2023, 13(3), 516; https://doi.org/10.3390/nano13030516 - 27 Jan 2023
Cited by 7 | Viewed by 2059
Abstract
Lightweight, durable waterproof and breathable membranes with multifunctional properties that mimic nature have great potential for application in high-performance textiles, efficient filtering systems and flexible electronic devices. In this work, the fluoride-free triblock copolymer poly(styrene-b-butadiene-b-styrene) (SBS) fibrous membrane with excellent elastic performance was [...] Read more.
Lightweight, durable waterproof and breathable membranes with multifunctional properties that mimic nature have great potential for application in high-performance textiles, efficient filtering systems and flexible electronic devices. In this work, the fluoride-free triblock copolymer poly(styrene-b-butadiene-b-styrene) (SBS) fibrous membrane with excellent elastic performance was prepared using electrospinning. According to the bionics of lotus leaves, a coarse structure was built onto the surface of the SBS fiber using dip-coating of silicon dioxide nanoparticles (SiO2 NPs). Polydopamine, an efficient interfacial adhesive, was introduced between the SBS fiber and SiO2 NPs. The hydrophobicity of the modified nanofibrous membrane was highly improved, which exhibited a super-hydrophobic surface with a water contact angle large than 160°. The modified membrane retained super-hydrophobic properties after 50 stretching cycles under 100% strains. Compared with the SBS nanofibrous membrane, the hydrostatic pressure and WVT rate of the SBS/PDA/SiO2 nanofibrous membrane improved simultaneously, which were 84.2 kPa and 6.4 kg·m−2·d−1 with increases of 34.7% and 56.1%, respectively. In addition, the SBS/PDA/SiO2 nanofibrous membrane showed outstanding self-cleaning and windproof characteristics. The high-performance fibrous membrane provides a new solution for personal protective equipment. Full article
(This article belongs to the Special Issue Advanced Bioinspired Nanomaterials with Superwettability)
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11 pages, 2439 KiB  
Article
Rapid Fabrication of Wavelength-Scale Micropores on Metal by Femtosecond MHz Burst Bessel Beam Ablation
by Yang Cheng, Yu Lu, Qing Yang, Jun Zhong, Mengchen Xu, Xiaodan Gou, Lin Kai, Xun Hou and Feng Chen
Nanomaterials 2022, 12(24), 4378; https://doi.org/10.3390/nano12244378 - 08 Dec 2022
Cited by 1 | Viewed by 1022
Abstract
The preparation of the wavelength-scale micropores on metallic surfaces is limited by the high opacity of metal. At present, most micropores reported in the literature are more than 20 µm in diameter, which is not only large in size, but renders them inefficient [...] Read more.
The preparation of the wavelength-scale micropores on metallic surfaces is limited by the high opacity of metal. At present, most micropores reported in the literature are more than 20 µm in diameter, which is not only large in size, but renders them inefficient for processing so that it is difficult to meet the needs of some special fields, such as aerospace, biotechnology, and so on. In this paper, the rapid laser fabrications of the wavelength-scale micropores on various metallic surfaces are achieved through femtosecond MHz burst Bessel beam ablation. Taking advantage of the long-depth focal field of the Bessel beam, high-density micropores with a diameter of 1.3 µm and a depth of 10.5 µm are prepared on metal by MHz burst accumulation; in addition, the rapid fabrication of 2000 micropores can be achieved in 1 s. The guidelines and experimental results illustrate that the formations of the wavelength-scale porous structures are the result of the co-action of the laser-induced periodic surface structure (LIPSS) effect and Bessel beam interference. Porous metal can be used to store lubricant and form a lubricating layer on the metallic surface, thus endowing the metal resistance to various liquids’ adhesion. The microporous formation process on metal provides a new physical insight for the rapid preparation of wavelength-scale metallic micropores, and promotes the application of porous metal in the fields of catalysis, gas adsorption, structural templates, and bio-transportation fields. Full article
(This article belongs to the Special Issue Advanced Bioinspired Nanomaterials with Superwettability)
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