Nanocomposite thin film of Ag nanoparticles embedded in amorphous Al 2 O 3 on optical sensors windows: Synthesis, characterization and targeted application towards transparency and anti-biofouling

Tendero, Claire; Lazar, A. P.; Samélor, Diane; Debieu, Olivier; Constantoudis, Vassilios; Papavieros, George; Villeneuve, Aurélie; Vahlas, Constantin

doi:10.1016/j.surfcoat.2017.08.061

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…The sample with the highest amount of silver, Ag-TiN showed the greatest reduction. These results agree with the antibacterial activity observed in these coatings, and with the results of Tendero et al [57] which also obtained a decrease in biofouling formation on a nanocomposite thin film of Ag nanoparticles embedded in amorphous Al 2 O 3 immersed for one week in riverine waters. Fig.…”

Section: Antibacterial and Antibiofouling Testssupporting

confidence: 92%

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Castro

Carneiro

Marques

et al. 2020

Surface and Coatings Technology

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Additive manufacturing (AM) is a hot topic nowadays, having a first order in importance in research trends, improving existent technologies and carrying them further. AM can be applied to ceramics, which have importance in current technologies. Their capability to maintain functional properties for long time periods, combined with the easiness to process and the abundance of raw materials, make them a fundamental part of mankind development. Within ceramics, stoneware has a wide range of uses but in some conditions, it can be affected by biofouling. Ti(O)N and Ag-Ti(O)N coatings over 3D printed stoneware, were presented as multifunctional solution, linking aesthetical and antimicrobial properties. Films were developed by reactive direct current (DC) magnetron sputtering and characterized physical, chemical and morphologically, as well as regarding their colour variation. Moreover roughness, wettability, antibacterial and antibiofouling were also evaluated. The results revealed that the Ag doped coatings (with or without oxygen addition) had an enhanced multifunctionality compared to control samples (without Ag). Ag nanoparticles addition created a surface with potential antibacterial and antibiofouling activities, in order to resist outdoors and aqueous environments, making these films able to be applied in architectural pieces as sculptures or other decorative parts, maintaining their properties with good aesthetical properties. implants, soft tissue replacements, drug deliveries, among others [2]; aerospace industry, in reduced volume parts and replacements parts for aircraft with advanced materials as aluminium alloys, titanium alloys, nickel super-alloys and special steels; automotive industry, in the development of some structural and engine parts; and tooling industry, like moulds with complex refrigeration systems enabling better performances and higher life time, [3]. Additive manufacturing, namely with metals and polymers, is no longer the future, it is the unavoidable present, but the additive manufacture of ceramic materials is still far from the desired maturity. Abundance, easy manipulation, low cost, heat resistance and long life time span are the main characteristics of ceramics [4] and across human history, new technologies have enlarged its uses. Chemically, ceramics can be considered as compounds formed between metallic and non-metallic elements with predominant ionic bonding but having a

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Section: Antibacterial and Antibiofouling Testssupporting

confidence: 92%

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Castro

Carneiro

Marques

et al. 2020

Surface and Coatings Technology

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“…Like antifouling paints, most nano coatings are not transparent and therefore not suitable for underwater cameras. Still, some transparent nano coatings have been developed and tested on glass surfaces, see, for example, [23], [24], but sometimes their biofouling protection is time-limited or sometimes they are not transparent in the ultraviolet range, although they are transparent in the visible range. 4) Local chlorination: A typical configuration of local chlorination [25] is the use of a housing or enclosure that encapsulates the sensors to be protected [14].…”

Section: B State-of-the-artmentioning

confidence: 99%

UVC-Based Biofouling Suppression for Long-Term Deployment of Underwater Cameras

Hoeher,

Zenk,

Cisewski

et al. 2023

IEEE J. Oceanic Eng.

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Spatially distributed underwater sensor systems are important tools to understand long-term trends in marine ecosystems. For example, in the ongoing UFOTriNet project, noninvasive techniques for the purpose of monitoring fish populations are investigated. A challenge within this and related projects is the long-term operation of cameras in brackish and fully saline water. The impact of biofouling, especially on the underwater cameras, should be minimized for reliable imaging. In the context of the UFOTriNet project, for this purpose, an energy-efficient and environmentally friendly antifouling concept based on UVC irradiation was developed and investigated to extend operation times and to reduce energy and maintenance costs. Innovative contributions include LED-based UVC irradiation from the inside of the camera's pressure housing into the water column, periodic UVC irradiation intervals that are significantly shorter than those commonly reported, and an analysis and comparison of the irradiance for internal and external irradiation configurations. The concept was confirmed by a measurement campaign in the Kiel Fjord, located in the southwest Baltic Sea.

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“…Optical sensors, renowned for their exceptional performance, face potential efficacy challenges when submerged due to the susceptibility of the outer surface to biological colonization [1][2][3]. This colonization, in turn, can lead to signal deviation, necessitating the development of robust solutions to ensure sustained accuracy and functionality.…”

Section: Introductionmentioning

confidence: 99%

Surface Conditioning Effects on Submerged Optical Sensors: A Comparative Study of Fused Silica, Titanium Dioxide, Aluminum Oxide, and Parylene C

Nan,

Floquet,

Combes

et al. 2023

Sensors

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Optical sensors excel in performance but face efficacy challenges when submerged due to potential surface colonization, leading to signal deviation. This necessitates robust solutions for sustained accuracy. Protein and microorganism adsorption on solid surfaces is crucial in antibiofilm studies, contributing to conditioning film and biofilm formation. Most studies focus on surface characteristics (hydrophilicity, roughness, charge, and composition) individually for their adhesion impact. In this work, we tested four materials: silica, titanium dioxide, aluminum oxide, and parylene C. Bovine Serum Albumin (BSA) served as the biofouling conditioning model, assessed with X-ray photoelectron spectroscopy (XPS). Its effect on microorganism adhesion (modeled with functionalized microbeads) was quantified using a shear stress flow chamber. Surface features and adhesion properties were correlated via Principal Component Analysis (PCA). Protein adsorption is influenced by nanoscale roughness, hydrophilicity, and likely correlated with superficial electron distribution and bond nature. Conditioning films alter the surface interaction with microbeads, affecting hydrophilicity and local charge distribution. Silica shows a significant increase in microbead adhesion, while parylene C exhibits a moderate increase, and titanium dioxide shows reduced adhesion. Alumina demonstrates notable stability, with the conditioning film minimally impacting adhesion, which remains low.

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Nanocomposite thin film of Ag nanoparticles embedded in amorphous Al 2 O 3 on optical sensors windows: Synthesis, characterization and targeted application towards transparency and anti-biofouling

Cited by 7 publications

References 27 publications

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

Surface functionalization of 3D printed structures: Aesthetic and antibiofouling properties

UVC-Based Biofouling Suppression for Long-Term Deployment of Underwater Cameras

Surface Conditioning Effects on Submerged Optical Sensors: A Comparative Study of Fused Silica, Titanium Dioxide, Aluminum Oxide, and Parylene C

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