Electrical and optical characterization of an atmospheric pressure, uniform, large-area processing, dielectric barrier discharge

Zeniou, Angelos; Puаč, Nevena; Škoro, Nikola; Selaković, Nenad; Dimitrakellis, Panagiotis; Gogolides, Εvangelos; Petrović, Zoran Lj.

doi:10.1088/1361-6463/aa5d69

“…The lines 337, 357, and 380 nm represent the second positive system of nitrogen molecules. The lines of the first negative system of N 2 + at 391 and 427 nm are also visible in the spectrum [ 40 ]. In order to study the effect of the oxygen concentration on oxygen-containing functional groups, different volumes of oxygen are added to obtain the optimum parameters, as shown in Figure 5 b.…”

Section: Resultsmentioning

confidence: 99%

Maskless Surface Modification of Polyurethane Films by an Atmospheric Pressure He/O2 Plasma Microjet for Gelatin Immobilization

Zhang

¹

,

Dai

²

,

Wen

³

et al. 2018

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A localized maskless modification method of polyurethane (PU) films through an atmospheric pressure He/O2 plasma microjet (APPμJ) was proposed. The APPμJ system combines an atmospheric pressure plasma jet (APPJ) with a microfabricated silicon micronozzle with dimension of 30 μm, which has advantages of simple structure and low cost. The possibility of APPμJ in functionalizing PU films with hydroxyl (–OH) groups and covalent grafting of gelatin for improving its biocompatibility was demonstrated. The morphologies and chemical compositions of the modified surface were analyzed by scanning electronic microscopy (SEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The fluorescent images show the modified surface can be divided into four areas with different fluorescence intensity from the center to the outside domain. The distribution of the rings could be controlled by plasma process parameters, such as the treatment time and the flow rate of O2. When the treatment time is 4 to 5 min with the oxygen percentage of 0.6%, the PU film can be effectively local functionalized with the diameter of 170 μm. In addition, the modification mechanism of PU films by the APPμJ is investigated. The localized polymer modified by APPμJ has potential applications in the field of tissue engineering.

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“…Most industrial equipment design electrodes for a long-time, high-intensity operation with minimal maintenance and thus choose ceramics as barrier materials (Čech et al 2014). Simpler designs make use of polymeric or composite materials with su ciently high breakthrough voltage, such as printed circuit boards (PCB) (Zeniou et al 2017). These are typically made from berglass-epoxy composites, e.g.…”

Section: Electrode Con Gurationmentioning

confidence: 99%

“…Other designs of SBDs can encompass various electrode designs (Akamatsu 2014) or include gas feed possibilities through patterned perforations (Gogolides et al 2016), typically with radio-frequency excitation (Dedrick et al 2011) to avoid electrode damage by arc formation and to ensure a homogeneous discharge (Dimitrakellis et al 2016). Such systems can be employed equally well for surface functionalization (Zeniou et al 2017). Moreover, the included gas feed allows for a simple implementation of etching, coating, or other processes that require special working gases .…”

Section: Introductionmentioning

confidence: 99%

An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

Dahle

¹

,

Pilko

²

,

Žigon

³

et al. 2021

Preprint

0

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The development of a simple surface barrier discharge plasma device is presented to enable more widespread access to and utilization of plasma technology. The application of the plasma device was demonstrated for pretreatment of wood prior to application of protective coatings for outdoor usage. The coatings' overall performance was increased, showing a reduction or absence of cracking due to weathering on plasma-pretreated specimens. Moreover, after ten months of outdoor weathering, the plasma-pretreated specimens showed fewer infections with biotic factors and improved adhesion performance in cross-cut tests, while the surface gloss performed independently from plasma pretreatment. In contrast to that, plasma-pretreated specimens were slightly more prone to discoloration due to outdoor weathering, whereas the plasma pretreatment did not impact the initial color after coating application.

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“…Other designs of SBDs can encompass various electrode designs (Akamatsu 2014) or include gas feed possibilities through patterned perforations (Gogolides et al 2016), typically with radio-frequency excitation (Dedrick et al 2011) to avoid electrode damage by arc formation and to ensure a homogeneous discharge (Dimitrakellis et al 2016). Such systems can be employed equally well for surface functionalization (Zeniou et al 2017). Moreover, the included gas feed allows for a simple implementation of etching, coating, or other processes that require special working gases (Dimitrakellis et al 2017).…”

Section: Introductionmentioning

confidence: 99%

An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

Dahle

¹

,

Pilko

²

,

Žigon

³

et al. 2021

View full text Add to dashboard Cite

The development of a simple surface barrier discharge plasma device is presented to enable more widespread access to and utilization of plasma technology. The application of the plasma device was demonstrated for pretreatment of wood prior to application of protective coatings for outdoor usage. The coatings' overall performance was increased, showing a reduction or absence of cracking due to weathering on plasma-pretreated specimens. Moreover, after ten months of outdoor weathering, the plasma-pretreated specimens showed fewer infections with biotic factors and improved adhesion performance in cross-cut tests, while the surface gloss performed independently from plasma pretreatment. In contrast to that, plasma-pretreated specimens were slightly more prone to discoloration due to outdoor weathering, whereas the plasma pretreatment did not impact the initial color after coating application. Graphic abstract

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Electrical and optical characterization of an atmospheric pressure, uniform, large-area processing, dielectric barrier discharge

Cited by 18 publications

References 37 publications

Maskless Surface Modification of Polyurethane Films by an Atmospheric Pressure He/O2 Plasma Microjet for Gelatin Immobilization

Maskless Surface Modification of Polyurethane Films by an Atmospheric Pressure He/O2 Plasma Microjet for Gelatin Immobilization

An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

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