Surface-charging behavior of plasma-treated polymer films

Roughness Evolution and Charging in Plasma-Based Surface Engineering of Polymeric Substrates: The Effects of Ion Reflection and Secondary Electron Emission

“…Finally, it has to be noticed that the plasma induced surface charging, not only affects the surface roughness developed on the etched surface, but it is also expected to affect the properties of the etched surfaces. The surface charge density developed on the etched surface was found to be stable [ 22 ] and affect the wetting properties of polymeric surfaces [ 23 ].…”

“…The latter is unavoidable during plasma etching of rough polymeric substrates as all requirements are there: the difference in the directionality between the positive ions and electrons bombarding the etched surface [ 21 ], the dielectric property of the substrates allowing charge to accumulate, and ultimately, the surface morphology, provoking the local inequality of positive and negative charges. There are measurements in previous studies verifying the existence of a surface charge density on the plasma etched polymeric substrates [ 22 , 23 ].…”

Effective polarization fatigue from repeated dielectric barrier discharges in cellular polypropylene ferroelectrets

“…Figures 1-3 all show a slight increase in d 33 after 10 3 cycles. Künstler et al 20 showed that a hydrogen-or argon-plasma treatment can improve the charge stability of positively charged polymer electrets. Exploring the beneficial effects of DBDs on the piezoelectricity of ferroelectrets and studying the influence of DBDs in different gas environments on ferroelectrets and their stability will be the next steps of our investigation.…”

A hybrid modeling framework for simulating plasma-surface interactions of rough polymeric substrates

“…Due to the roughness there is a surface morphology which in combination with the directionality difference of positive ions and electrons impinging on the etched surface [119], enables the local imbalance of positive and negative charges. There are measurements in previous studies verifying the existence of a surface charge density on the plasma etched polymeric substrates [47,162].…”

“…• The plasma induced surface charging, not only affects the surface roughness developed on the etched surface, but it is also expected to affect the properties of the etched surfaces. The surface charge density developed on the etched surface was found to be stable [233] and affect the wetting properties of polymeric surfaces [47]. Experimental investigation is required to clarify the relationship between roughness and charge 132 retention on the surface of a polymer as well as investigation of possible applications that may arise from such technology.…”