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Nanomaterials
Special Issues
Bioinspired and Nanostructured Surfaces for Wetting Applications
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Bioinspired and Nanostructured Surfaces for Wetting Applications

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

Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 8215

Special Issue Editors

Prof. Dr. Jie Ju

E-Mail Website
Guest Editor
School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475000, China
Interests: materials for water-energy nexus; focusing on liquid super-spreading enabled heat dissipation; electric-energy harvest; solar desalination; and zero energy-input fog harvest through manipulating interaction between liquid and surfaces with special wettability
Dr. Yi-Chen Ethan Li

E-Mail Website
Guest Editor
Department of Chemical Engineering, Feng Chia University, Taichung 407102, Taiwan
Interests: biomaterials; stem cell; neural tissue engineering; 3D bioprinting; organ-on-a-chip
Special Issues, Collections and Topics in MDPI journals
Dr. Yuqiong Luo

E-Mail Website
Guest Editor
School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475000, China
Interests: interface materials with special wettability; bio-inspired interface materials; solar evaporator design

Special Issue Information

Dear Colleagues,

Understanding and controlling the wetting behavior between fluids and solid surface impacts many areas of science and technology. Biomimetic research indicates that many phenomena regarding wettability in nature, such as the superhydrophobicity of lotus leaf, the underwater superoleophobicity of fish scale, and the self-repairing slippery behavior on pitcher plant, are all related to the unique micro- and nanostructures on the surfaces. The designed surfaces with special wettability exhibit great advantages in a wide variety of applications in health care, water treatment, agriculture, etc. Recently, there have been increasingly studies on the wetting theory, fabrication method and application of materials with special wettability. We are pleased to invite you to submit original research articles and reviews to this Special Issue.

This Special Issue aims to collect high-quality research outcomes on the recent advances in bioinspired surfaces with special wettability, including new concepts, analyses, fabrication methods, application studies, etc. The submitted manuscripts should meet the aim and scope of the journal.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following: 

  • The finding of new bioinspired surfaces with special wettability;      
  • Novel fabrication processes of bioinspired surfaces with special wettability, especially for surfaces with large-area and high-stability;
  • Theoretical analyses of the wettability behavior on solid surfaces;
  • Application of the surfaces with special wettability.

Prof. Dr. Jie Ju
Dr. Yi-Chen Ethan Li
Dr. Yuqiong Luo
Guest Editors

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

  • bioinspired
  • micro-/nano-structure
  • wettability
  • interfacial
  • fluid
  • solid surface
  • wetting theory
  • fabrication process
  • application

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Published Papers (4 papers)

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Research

Jump to: Review

22 pages, 10967 KiB  
Article
Design of Surfaces with Persistent Antimicrobial Properties on Stainless Steel Developed Using Femtosecond Laser Texturing for Application in “High Traffic” Objects
by Albena Daskalova and Liliya Angelova
Nanomaterials 2023, 13(17), 2396; https://doi.org/10.3390/nano13172396 - 23 Aug 2023
Cited by 3 | Viewed by 1353
Abstract
Metal-based high-touch surfaces used for diverse applications in everyday use, like handrails, playground grab handles, doorknobs, ATM touch pads, and desks, are the most common targets for pollution with a variety of microbes; there is thus a need to improve their antimicrobial properties, [...] Read more.
Metal-based high-touch surfaces used for diverse applications in everyday use, like handrails, playground grab handles, doorknobs, ATM touch pads, and desks, are the most common targets for pollution with a variety of microbes; there is thus a need to improve their antimicrobial properties, an issue which has become a challenge in recent years, particularly after the COVID-19 pandemic. According to the World Health Organization (WHO), drug-resistant pathogens are one of the main concerns to global health today, as they lead to longer hospital stays and increased medical costs. Generally, the development of antimicrobial surfaces is related to the utilization of chemical methods via deposition on surfaces in the forms of various types of coatings. However, the addition of chemical substances onto a surface can induce unwanted effects, since it causes surface chemistry changes and, in some cases, cannot provide long-lasting results. A novel approach of utilising ultra-short laser radiation for the treatment of metallic surfaces by inducing a variety of micro- and nanostructuration is elaborated upon in the current research, estimating the optimum relation between the wettability and roughness characteristics for the creation of antimicrobial properties for such high-touch surfaces. In the current study, AISI 304–304L stainless steel metal was used as a benchmark material. Surface texturing via laser ablation with femtosecond laser pulses is an effective method, since it enables the formation of a variety of surface patterns, along with the creation of bimodal roughness, in one-step processing. In this investigation, a precise approach toward developing hydrophobic stainless steel surfaces with tunable adherence using femtosecond laser-induced modification is described. The impact of basic femtosecond laser processing parameters, like the scanning velocity, laser energy, and wettability properties of the laser-processed stainless steel samples, are examined. It is identified that the topography and morphology of laser-induced surface structures can be efficiently changed by adapting the laser processing parameters to create structures, which facilitate the transfer of surface properties from extremely low to high surface wettability. Full article
(This article belongs to the Special Issue Bioinspired and Nanostructured Surfaces for Wetting Applications)
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15 pages, 8340 KiB  
Article
Laser-Heat Surface Treatment of Superwetting Copper Foam for Efficient Oil–Water Separation
by Qinghua Wang, Chao Liu, Huixin Wang, Kai Yin, Zhongjie Yu, Taiyuan Wang, Mengqi Ye, Xianjun Pei and Xiaochao Liu
Nanomaterials 2023, 13(4), 736; https://doi.org/10.3390/nano13040736 - 15 Feb 2023
Cited by 6 | Viewed by 1890
Abstract
Oil pollution in the ocean has been a great threaten to human health and the ecological environment, which has raised global concern. Therefore, it is of vital importance to develop simple and efficient techniques for oil–water separation. In this work, a facile and [...] Read more.
Oil pollution in the ocean has been a great threaten to human health and the ecological environment, which has raised global concern. Therefore, it is of vital importance to develop simple and efficient techniques for oil–water separation. In this work, a facile and low-cost laser-heat surface treatment method was employed to fabricate superwetting copper (Cu) foam. Nanosecond laser surface texturing was first utilized to generate micro/nanostructures on the skeleton of Cu foam, which would exhibit superhydrophilicity/superoleophilicity. Subsequently, a post-process heat treatment would reduce the surface energy, thus altering the surface chemistry and the surface wettability would be converted to superhydrophobicity/superoleophilicity. With the opposite extreme wetting scenarios in terms of water and oil, the laser-heat treated Cu foam can be applied for oil–water separation and showed high separation efficiency and repeatability. This method can provide a simple and convenient avenue for oil–water separation. Full article
(This article belongs to the Special Issue Bioinspired and Nanostructured Surfaces for Wetting Applications)
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Review

Jump to: Research

16 pages, 4161 KiB  
Review
Research Progress on Moisture-Sorption Actuators Materials
by Dajie Zhang, Jia Ding, Yulin Zhou and Jie Ju
Nanomaterials 2024, 14(19), 1544; https://doi.org/10.3390/nano14191544 - 24 Sep 2024
Viewed by 831
Abstract
Actuators based on moisture-sorption-responsive materials can convert moisture energy into mechanical/electrical energy, making the development of moisture-sorption materials a promising pathway for harnessing green energy to address the ongoing global energy crisis. The deformability of these materials plays a crucial role in the [...] Read more.
Actuators based on moisture-sorption-responsive materials can convert moisture energy into mechanical/electrical energy, making the development of moisture-sorption materials a promising pathway for harnessing green energy to address the ongoing global energy crisis. The deformability of these materials plays a crucial role in the overall energy conversion performance, where moisture sorption capacity determines the energy density. Efforts to boost the moisture absorption capacity and rate have led to the development of a variety of moisture-responsive materials in recent years. These materials interact with water molecules in different manners and have shown diverse application scenarios. Here, in this review, we summarize the recent progress on moisture-sorption-responsive materials and their applications. We begin by categorizing moisture-sorption materials—biomaterials, polymers, nanomaterials, and crystalline materials—according to their interaction modes with water. We then review the correlation between moisture-sorption and energy harvesting performance. Afterwards, we provide examples of the typical applications using these moisture-sorption materials. Finally, we explore future research directions aimed at developing next-generation high-performance moisture-sorption materials with higher water uptake, tunable water affinity, and faster water absorption. Full article
(This article belongs to the Special Issue Bioinspired and Nanostructured Surfaces for Wetting Applications)
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18 pages, 10775 KiB  
Review
Recent Advances in Fabrication of Durable, Transparent, and Superhydrophobic Surfaces
by Wenxin Luo and Mingjie Li
Nanomaterials 2023, 13(16), 2359; https://doi.org/10.3390/nano13162359 - 18 Aug 2023
Cited by 4 | Viewed by 3747
Abstract
Transparent superhydrophobic coatings have been extensively investigated due to their ability to provide self-cleaning properties for outdoor applications. However, the widespread implementation of these coatings on a large scale is impeded by the challenges of poor durability and complex fabrication procedures. In this [...] Read more.
Transparent superhydrophobic coatings have been extensively investigated due to their ability to provide self-cleaning properties for outdoor applications. However, the widespread implementation of these coatings on a large scale is impeded by the challenges of poor durability and complex fabrication procedures. In this review, the fundamentals and theories governing the mutually exclusive properties of superhydrophobicity, optical transparency, and susceptibility to wear are introduced, followed by a discussion of representative examples of advanced surface design and processing optimizations. Also, robust evaluation protocols for assessing mechanical and chemical stabilities are briefed and potential research directions are presented. This review can offer the research community a better understanding of durable and transparent superhydrophobic surfaces, thereby facilitating their development for real-world applications. Full article
(This article belongs to the Special Issue Bioinspired and Nanostructured Surfaces for Wetting Applications)
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