Nano Self-Cleaning Coatings

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

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 3197

Special Issue Editor


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Guest Editor
DTU Nanolab—National Centre for Nano Fabrication and Characterization, Technical University of Denmark, Ørsteds Plads, Building 347, 2800 Copenhagen, Denmark
Interests: fabrication and characterization of metamaterials; functional properties of nanostructured surfaces; surface wetting phenomena; micro and nanofabrication techniques of polymers, Si and glass; microfluidics; electrophysiology; electrochemical biosensors
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Special Issue Information

Dear Colleagues,

Controlling the repellent properties of surface coatings is important in many aspects of engineering solutions for healthcare, water-oil separation, energy conversion, and corrosion protection, just to mention a few key applications. In recent years, coatings with composites comprised of silica nanoparticles and metal oxides in particular have generated considerable interest for various applications. Especially the photocatalytic properties of many metal oxides have spawned considerable interest. For surface engineering, both bottom-up approaches (comprising coatings by nanoparticle suspensions) and top-down approaches (comprising advanced nanofabrication techniques with subsequent coatings to define surface chemistries) were proposed to engineer surface texture and surface chemistry.

As scientists, we can contribute by providing a deeper understanding of the fundamental self-cleaning phenomena and demonstrate the solutions. For inspiration, we can look at the solutions such as the lotus effect already developed by nature through millions of years of evolution. Many of those biomimetic designs comprise hierarchical surface textures on the both micro- and nano-scale.

We invite you to submit your contribution to this field of applied science in the form of a scientific paper.

Prof. Dr. Rafael Taboryski
Guest Editor

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Keywords

  • hydrophobic
  • oleophobic
  • repellent
  • lotus effect
  • contact angle
  • silica nanoparticles
  • water-oil separation
  • metal oxides
  • corrosion resistance
  • photo-catalysis

Published Papers (1 paper)

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Research

11 pages, 2185 KiB  
Article
Simple Fabrication of Transparent, Colorless, and Self-Disinfecting Polyethylene Terephthalate Film via Cold Plasma Treatment
by Ji-Hyeon Kim, ChaeWon Mun, Junfei Ma, Sung-Gyu Park, Seunghun Lee and Chang Su Kim
Nanomaterials 2020, 10(5), 949; https://0-doi-org.brum.beds.ac.uk/10.3390/nano10050949 - 15 May 2020
Cited by 11 | Viewed by 2623
Abstract
Cross-infection following cross-contamination is a serious social issue worldwide. Pathogens are normally spread by contact with germ-contaminated surfaces. Accordingly, antibacterial surface technologies are urgently needed and have consequently been actively developed in recent years. Among these technologies, biomimetic nanopatterned surfaces that physically kill [...] Read more.
Cross-infection following cross-contamination is a serious social issue worldwide. Pathogens are normally spread by contact with germ-contaminated surfaces. Accordingly, antibacterial surface technologies are urgently needed and have consequently been actively developed in recent years. Among these technologies, biomimetic nanopatterned surfaces that physically kill adhering bacteria have attracted attraction as an effective technological solution to replace toxic chemical disinfectants (biocides). Herein, we introduce a transparent, colorless, and self-disinfecting polyethylene terephthalate (PET) film that mimics the surface structure of the Progomphus obscurus (sanddragon) wing physically killing the attached bacteria. The PET film was partially etched via a 4-min carbon tetrafluoride (CF4) plasma treatment. Compared to a flat bare PET film, the plasma-treated film surface exhibited a uniform array structure composed of nanopillars with a 30 nm diameter, 237 nm height, and 75 nm pitch. The plasma-treated PET film showed improvements in optical properties (transmittance and B*) and antibacterial effectiveness over the bare film; the transparency and colorlessness slightly increased, and the antibacterial activity increased from 53.8 to 100% for Staphylococcus aureus, and from 0 to 100% for Escherichia coli. These results demonstrated the feasibility of the CF4 plasma-treated PET film as a potential antibacterial overcoating with good optical properties. Full article
(This article belongs to the Special Issue Nano Self-Cleaning Coatings)
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