Surface dielectric barrier discharges (SDBDs) are a type of asymmetric discharge (DBD) that can be used to generate ions and produce aerodynamic forces in air. They have shown promise range aerospace applications, including as actuators for solid-state aircraft control or enhancement ion sources electroaerodynamic propulsion. However, their power draw characteristics not well understood. Wherea...

An efficient inactivation of surface contaminants like micro organisms or toxins is a requirement for the manufacturing of safe and high-quality products in food industry. In a research project funded by the BMBF (FKZ 13N7609) the so called cascaded dielectric barrier discharge was developed (CDBD). This patented system is a further development of a dielectric barrier discharge which combines g...

امروزه استفاده از محرک­های پلاسمایی جریان متناوب نسبت به جریان مستقیم، جهت کنترل فعال جریان، متداول­تر بوده و تقریبأ هیچ کار تحقیقی بر روی پلاسمای جریان مستقیم انجام نگرفته است. در این مقاله با استفاده از یک منبع تغذیه جریان مستقیم و هندسه های گوناگون، خصوصیات پلاسما در هر دو حالت corona و dbd (dielectric barrier discharge)  مورد مطالعه قرار گرفت. با استفاده از نتایج این پژوهش مشخص شد که جریان ...

OBJECTIVE To evaluate whether atmospheric-pressure dielectric-barrier-discharge plasma treatment of zirconia enhances its biocompatibility with human gingival fibroblasts. MATERIALS AND METHODS The zirconia disks were divided into four groups and treated using helium atmospheric-pressure dielectric-barrier-discharge plasmas for 30, 60 or 90 s or left untreated. The surface morphology, wettabi...

In this paper, an atmospheric pressure polyethylene terephthalate dielectric barrier discharge is produced in a helium–argon mixture. The influences of the electrode voltage on mode are experimentally investigated. results show that, at fixed argon content 50%, transits from local uniform, through isolated pattern, to whole uniform with increase voltage. Both peak value current pulse and spectr...

Atmospheric pressure corona discharges are used in electrophotographic (EP) printing technologies for charging imaging surfaces such as photoconductors. A typical corona discharge consists of a wire (or wire array) biased with a few hundred volts of dc plus a few kV of ac voltage. An electric discharge is produced around the corona wire from which electrons drift towards and charge the underlyi...

In this work, the discharge dynamics in an atmospheric pressure dielectric barrier discharge (DBD) is studied in a DBD reactor having parallel plate electrodes geometry. The DBD reactor is powered by a 50 Hz ac high voltage power source through a ballast resistor. The images of filaments occurring in the discharge gap are captured using a high speed intensified charge coupled device camera. The...