The use of a micro-cavity discharge array at atmospheric pressure to investigate the spatial modification of polymer surfaces

Microplasma Array Patterning of Reactive Oxygen and Nitrogen Species onto Polystyrene

“…Here, spatially resolved modification of surface chemistry is achieved through the contact between the substrate and the plasma stamp. Bryant et al have previously demonstrated that microplasma arrays can be used for the localized surface oxidation of polymers without physical masks or intimate contact of the microplasma array device with the target substrate [26]. In this study, the microplasma array consisted of 2500 cavities with a spacing of 50 µm center-to-center.…”

“…Therefore, we conducted a systematic study to determine the optical characteristics of a microplasma array source, designed for spatially localized surface modification [9], with respect to voltage, frequency and pressure. The electrical characteristic of a microplasma array has been described in a previous publication [26]. The discharge power in that microplasma array was typically below 1 W with less than 0.4 mW consumed by each microplasma discharge.…”

“…In contrast to low-pressure plasmas, there are a limited number of systematic studies investigating the fundamental interaction of atmospheric-pressure microplasmas with the surface of materials [10,26,39]. Despite the growing use of miniaturized plasma sources for surface treatment, most studies of the interaction between plasmas and organic surfaces have focussed on microplasma jets [10,26,[48][49][50].…”

“…Despite the growing use of miniaturized plasma sources for surface treatment, most studies of the interaction between plasmas and organic surfaces have focussed on microplasma jets [10,26,[48][49][50]. Therefore, we conducted a systematic study to determine the optical characteristics of a microplasma array source, designed for spatially localized surface modification [9], with respect to voltage, frequency and pressure.…”

Mass Spectrometry Analysis of the Real-Time Transport of Plasma-Generated Ionic Species Through an Agarose Tissue Model Target

“…Non-thermal atmospheric pressure plasma (NT-APP) is being investigated for different biomedical applications such as wound decontamination [1,2], biomaterial surface treatment [3][4][5] and cancer therapy [6,7]. NT-APP jets typically operated with inert gases, such as helium and argon, generate a rich mixture of reactive oxygen species (ROS) and reactive nitrogen species (RNS), or collectively RONS, when the plasma effluent impinges upon air [8].…”