Surface modification of polypropylene with an atmospheric pressure plasma jet sustained in argon and an argon/water vapour mixture

Sarani, Abdollah; Nikiforov, Anton; Geyter, Nathalie De; Morent, Rino; Leys, Christophe

doi:10.1016/j.apsusc.2011.05.071

Cited by 75 publications

(51 citation statements)

References 25 publications

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“…dedicated topics in symposia on plasma and material science), notably for thin film deposition, 1-3 surface treatment, [4][5][6] and biomedical applications. [7][8][9] Their attractiveness stems principally from both a non-reliance on elaborate vacuum technology and their low operating gas temperatures.…”

Section: Introductionmentioning

confidence: 99%

Influence of ambient air on the flowing afterglow of an atmospheric pressure Ar/O2 radiofrequency plasma

Duluard

Dufour

Hubert

et al. 2013

Journal of Applied Physics

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International audienceThe influence of ambient air on the flowing afterglow of an atmospheric pressure Ar/O2 radiofrequency plasma has been investigated experimentally. Spatially resolved mass spectrometry and laser induced fluorescence on OH radicals were used to estimate the intrusion of air in between the plasma torch and the substrate as a function of the torch-to-substrate separation distance. No air is detected, within the limits of measurement uncertainties, for separation distances smaller than 5 mm. For larger distances, the effect of ambient air can no longer be neglected, and radial gradients in the concentrations of species appear. The Ar 4p population, determined through absolute optical emission spectroscopy, is seen to decrease with separation distance, whereas a rise in emission from the N2(C–B) system is measured. The observed decay in Ar 4p and N2(C) populations for separation distances greater than 9mm is partly assigned to the increasing collisional quenching rate by N2 and O2 molecules from the entrained air. Absorption measurements also point to the formation of ozone at concentrations from 10^14 to 10^15 cm-3, depending both on the injected O2 flow rate and the torch-to-substrate separation distance

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Section: Introductionmentioning

confidence: 99%

Influence of ambient air on the flowing afterglow of an atmospheric pressure Ar/O2 radiofrequency plasma

Duluard

Dufour

Hubert

et al. 2013

Journal of Applied Physics

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“…4,5 Here, we distinguish two modes of APPJ operation depending on if the plume is coupled to the surface and charged species dominate versus remote treatments where reactive neutrals dominate. Previous work on APPJ surface interaction has not systematically distinguished between the two interaction modes described here, despite substantial difference in the physical mechanisms, and have primarily been investigated post-treatment through methods such as biological deactivation, 6 water contact angle, 7 atomic force microscopy, 8 Fourier transform infrared spectroscopy, 9 and profilometry. 10 In this work, we use a combination of in situ techniques including real time ellipsometry and high speed photography with post characterization techniques.…”

mentioning

confidence: 99%

Real time characterization of polymer surface modifications by an atmospheric-pressure plasma jet: Electrically coupled versus remote mode

Knoll

Luan

Bartis

et al. 2014

Applied Physics Letters

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We characterize and distinguish two regimes of atmospheric pressure plasma (APP) polymer interactions depending on whether the electrical interaction of the plasma plume with the surface is significant (coupled) or not (remote). When the plasma is coupled to the surface, localized energy deposition by charged species in filaments dominates the interactions with the surface and produces contained damaged areas with high etch rates that decrease rapidly with plasma source-to-sample distance. For remote APP surface treatments, when only reactive neutral species interact with the surface, we established specific surface-chemical changes and very slow etching of polymer films. Remote treatments appear uniform with etch rates that are highly sensitive to feed gas chemistry and APP source temperature.

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“…GF/T: number of assays resulting in germ-free status/total number of assays for the protocol in question. DBD air: dielectric barrier discharge using air (Jacobs et al 2011); APPJ argon: atmospheric pressure plasma jet using argon (Sarani et al 2011) of the bottles or wells housing germ-free larvae harboured culturable bacterial cells. Flow cytometry was used to confirm the germ-free status, specifically targeting non-culturable bacterial cells.…”

Section: Evaluation Of Germ-free Statusmentioning

confidence: 99%

Germ-free sea bass Dicentrarchus labrax larval model: a valuable tool in the study of host-microbe interactions

Schaeck

Swaef²,

Broeck³

et al. 2016

Dis. Aquat. Org.

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A thorough understanding of host−microbe interactions is crucial for more efficient disease management in the marine larviculture industry. As demonstrated in terrestrial animal research, gnotobiotic systems (involving animals cultured in germ-free conditions or inoculated with known microorganisms) are excellent tools to extend our understanding of the mechanisms involved in host−microbe interactions and allow the evaluation of new treatments for diseases. In this study, we introduce a germ-free European sea bass Dicentrarchus labrax larval model, independent of the continuous addition of antimicrobial agents. This model has an experimental set-up that allows addition of live feed to the larvae without compromising the germ-free status. This model will facilitate and render aquaculture research more effective in terms of mitigation fish larval diseases.KEY WORDS: Aquaculture · Gnotobiotic · Pathogen · Larvae Resale or republication not permitted without written consent of the publisherDis Aquat Org 117: [177][178][179][180][181][182][183][184][185] 2016 towards more strict regulations on the use of antibiotics in the aquaculture sector (Suba singhe et al. 2001, Romero et al. 2012, hence calling for alternative, sustainable methods to which the aquaculturist can resort for preventing and controlling disease outbreaks. Several environmentally friendly prophylactic disease treatments have been the focus of recent research, i.e. probiotics, prebiotics, vaccines, immunostimulants or antimicrobial peptides (Merrifield & Ringø 2014).A judicious and scientifically supported application of the abovementioned alternatives warrants a thorough testing of their efficacy and safety under standardized and controlled experimental conditions (Smith et al. 2003). However, the stochastic colonization of larvae by microorganisms may hinder the establishment of a reproducible experimental set-up by generating high inter-individual and inter-batch variability in the composition of the standing microbial community. Hence, from a microbiological point of view, iterating experimental conditions using conventional animals is almost impossible (Fjellheim et al. 2012). The development of test systems in which the researcher has complete control over the microbial community structure, by adopting a germ-free or gnotobiotic model, was revolutionary in this respect. As already demonstrated in multiple terrestrial animal studies, gnotobiotic models are an excellent tool to extend our understanding of (1) the nutritional requirements of host organisms, (2) host−microbe interactions and (3) host metabolic functions (Gordon & Pesti 1971, Wostmann 1996, Marques et al. 2005. Despite the significant increase in the use of fish as experimental animals during the last decades (Marques et al. 2005, Schaeck et al. 2013) and the stressed importance of raising aquatic organisms gnotobiotically (Bates et al. 2006), the current know-how of rearing gnotobiotic aquatic organisms is much more limited compared to the more traditional mammalian l...

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Surface modification of polypropylene with an atmospheric pressure plasma jet sustained in argon and an argon/water vapour mixture

Cited by 75 publications

References 25 publications

Influence of ambient air on the flowing afterglow of an atmospheric pressure Ar/O2 radiofrequency plasma

Influence of ambient air on the flowing afterglow of an atmospheric pressure Ar/O2 radiofrequency plasma

Real time characterization of polymer surface modifications by an atmospheric-pressure plasma jet: Electrically coupled versus remote mode

Germ-free sea bass Dicentrarchus labrax larval model: a valuable tool in the study of host-microbe interactions

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