A particular type of plasma actuator that has gained wide use is based on a single dielectric barrier discharge sdbd mechanism that has desirable features for use in air at atmospheric pressures. In this paper, the optimization method proposed by our studying team was adopted to carry out the numerical optimization research on the discharge gap of the reactor. The defectless barrier layer will be a future task. Intracellular electric fields produced by dielectric barrier. Influence of pulse characteristics and power density on stratum. Dielectric barrier discharge plasma actuators for flow control.
Study on no conversion characteristics in dielectric barrier discharge process. Pohang university of science and technology chinju. The combinations of triple electrodeplaten used were stainless steel wire electrodesrubber platen werp, ceramic electrodesaluminium platen ceap. The generated cd vapor was subsequently measured by atomic fluorescence spectrometry. Thus, ions are trapped in the gap and do not charge up the barriers. In addition, electrons that exist in large amounts in the crust each have different potentials. They are also marketed as bipolar ionization systems, ionization systems, corona discharge tubes cdt or dielectric barrier discharge dbd systems. Their main advantages are their very short response time and their low power consumption. The largely isothermal surface plasma generation realized above can modify the nearwall flow structure by means of lorentzian collisions between the ionized fluid and the neutral fluid. Pdf dielectricbarrier discharges silent discharges are used on a large industrial scale. In a two cylinder coaxial dbd reactor, tubes are placed between two electrodes and flow passes through the annuals between these barrier tubes.
Both energies etotalt and et merge at the end of the discharge. By spatially examining the emission spectra and plasma temperature, it is found that their peaks shift from edges to the center and the negative. Atmospheric pressure dielectric barrier discharge dbd has abundant application fields, and the influence of the barrier material on dbd characteristics has been the research focus in recent years. Numerical optimization research was made for the dielectric barrier discharge dbd reactor for nox removal in order to improve the efficiency of the dbd reactor. The purpose of this paper is to study and design a nonthermal dielectric barrier discharge generator generated by a dc power supply, by designing two different geometries of the electrode. Surface dielectric barrier discharge dbd plasma actuators are widely investigated for their ability to manipulate air. Once again, the applied voltage varied up to 23 kv and the total flow rate was maintained at 100 mlmin.
The electrical and spectral characteristics of a dielectric barrier discharge dbd are experimentally investigated in a sealed off coaxial cylinder. Catalyticdielectric barrier discharge plasma reactor for. The combination with polymer film is important to improve wvtr performance. Dielectric barrier discharge indiumtin oxide dc magnetron xray photoelectron spectroscopy aluminumdoped zinc oxide azo is a material that can have high electrical conductivity while being highly transparent at the same time. Pdf dielectric barrier discharge control of a turbulent. Plasma systems, other than torches, for treatment of object surfaces, wherein plasma is generated by a corona discharge i. Dielectric barrier discharge plasma actuators for flow. The peak to peak discharge voltage is recorded at varying discharge frequency for fixed driving power defined by vdd. The effects of two fluorination methods on the microstructures, electrical parameters, and. Characteristics of dielectric barrier discharge ozone. Ozone synthesis in air dielectric barrier discharge dbd was studied with an emphasis on the effects of power sources and humidity. Dielectric barrier discharges silent discharges are used on a large industrial scale. Plasmapolymerization of hmdso using an atmospheric. Effect of gas composition on removal of no by dielectric.
Experimental study of lowpressure nitrogen dielectric barrier discharge hasina khatun and a. One is a planar electrode model, and the other is a plasma jet model. Discharge plasma generated at atmospheric pressure using short pulse high voltage application or application of ac high voltage with dielectric barrier is nonthermal, in which most electric energy from the high voltage application is delivered to electrons. Report on the different plasma m odules for pollution removal. The article drive dielectric barrier discharge besides its title making no sense consists of four sentences in two paragraphs plus a bullet list, and all but the last paragraph two sentences are giving information that is in, or should be in, this article in the first place. Here, we report on the oxygenation and roughness features of polystyrene and polyethylene terephthalate films, induced by air dielectric barrier discharge dbd processing using different electrodeplaten configurations. It has been exclusively related to ozone generation for a long time. This paper features the pulse polarity effect on ozone generation efficiency by adjusting the applied voltage and the flow rate in a coaxial dielectric barrier discharge reactor.
Volume 153, issues 34, 1 august 2010, pages 176183. Dielectric barrier discharge dbd plasma actuators have been proposed for a wide range of. Dissolved cd species were readily converted into volatile species by reaction with hydrogen in a coaxial thinfilm dielectric barrier discharge dbd plasma reactor. The diffused glow discharge mode appears at low frequency alternating voltage as well as unipolarpulsed voltage excitation. Pdf nonthermal atmospheric pressure dielectric barrier. Cpc definition h05h plasma technique fusion reactors g21b. The application of dielectric barrier discharge non. Transition from glowlike to streamerlike discharge in. They combine the advantages of nonequilibrium plasma properties with the ease of atmosphericpressure operation. Enhanceddielectricbarrierdischargebodyforce generaonusing.
Dielectric barrier discharge control of a turbulent boundary layer in a supersonic flow article pdf available in applied physics letters 974. Spectral characteristics of cotton seeds treated by a. A magnetic field is introduced to the dielectricbarrier discharge enhanced directcurrent glow discharge for efficient plasma generation, with the discharge power of 2. Effect of manganese oxide catalyst on the dielectric. Dielectric barrier discharge research papers academia. Nov 25, 2014 dielectric barrier discharge ionization is an ambientionization technique. By this method, which has application area at industry, non. In this paper, we have reported a localized material growth method by dielectric barrier discharge dbd in a mixture of acetylene and argon. Electric field in an ac dielectric barrier discharge. Crookes developed the tube named after him to study uorescence phenomena and electrical discharges g. Presented at joint ictpiaea school on atomic processes in plasmas. We found that, in the discharge, plasma polymerization takes place and the material growth rate is much higher along the discharge filaments than it is in other locations. An indirect ammonia synthesis from nitrogen and water through plasma processing is proposed and demonstrated. Influence of no concentration on removal efficiency in.
The schematic of the reactor consists in a tube of pyrex glass with an internal radius of 11. Successively accelerated ionic wind with integrated. A pretreatment reactor that forms a dielectric barrier discharge plasma at the. Nonthermal plasma ntp discharge is being introduced as a promising method for pollutant emission reduction. The electric field in the ac discharge between two parallel plate electrodes covered by dielectric plates may be. Carbon dioxide splitting in a dielectric barrier discharge plasma. Using a dielectric barrier discharge for plasma modification of catalysts. There is a potential difference of 300,000 volts between the surface and the ionosphere.
Discharge pulse duration and distance between dielectric and discharge surface depends on load, design of dbd electrode and voltage setting. The wellknown single dbd plasma actuator is composed of two plate electrodes asymmetrically mounted. Nh 3 is a promising hydrogen storage material because of its high hydrogen storage density. Dielectric barrier discharge for high efficiency plasma. A gapless microdielectricbarrierdischarge ion source. Application of atmospheric pressure plasma in environmental. Dielectric barrier discharge, ozone generation, and their. Effects and mechanism of atmosphericpressure dielectric. Performance characterization and quantification of. This allowed highly efficient soft ionization of gasphase, chromatographically res.
Two parallel effluents are formed by the gas flow and merge into one 46, 48. This socalled dielectric barrier is responsible for a selfpulsing plasma operation and thus, the formation of a nonthermal plasma at normal pressure. Surface dielectric barrier discharge plasma actuators. The experimental results of the lowpressure dielectric barrier discharge lpdbd source and also the extended studies of wagnaars et al are described 2. Results show that utilization of unipolar pulse has better performance when compared with the bipolar mode, but on the other hand, utilization of the positive pulse has slightly higher efficiency than that of negative. Microbubbleenhanced dielectric barrier discharge pretreatment of. This is not required in radio frequency and microwave discharges. Consequently, this discharge is called sometimes silent discharge. Abstract this study investigated the degradation of n, ndimethyl4nitrosoaniline rno, indicator of the generation of oh radical by using dielectric barrier discharge dbd plasma. This model simulates electrical breakdown in an atmospheric pressure gas.
Sankarsan mohapatro and b s rajanikanth hvac particulate. They combine the advantages of nonequilibrium plasma. Apr 27, 2007 the most efficient method to get cold plasma at atmospheric pressure is dielectric barrier dischargedbd. Please use one of the following formats to cite this article in your essay, paper or report. Cold atmospheric pressure plasma is currently being investigated for a wide range of clinical applications, including skin sterilization, blood coagulation 1, 2, malignant cell apoptosis 1, and wound healing 1. Active capillary dielectric barrier discharge ionization dbdi is emerging as a compact, lowcost, and robust method to form intact ions of small molecules for detection in near real time by portable mass spectrometers. It has been used in many applications such as displays, mobile devices and solar cells. Successively accelerated ionic wind with integrated dielectric barrier discharge plasma actuator for lowvoltage operation. They combine the advantages of nonequilibrium plasma properties with the. Dielectric barrier discharges dbds are a wellestablished method to. Article pdf available in plasma sources science and technology 265 march 2017 with 757 reads.
Electron current from an rf microdielectric barrier discharge junchieh wang, napoleon leoni, henryk birecki, omer gila, and mark j. Since its first description in 2007, it has attracted much attention in such fields as biological analysis, food safety, massspectrometry imaging, forensic identification, and reaction monitoring for its advantages, e. Introduction the measurement of plasma power consumption is essential for all dielectric barrier discharge dbd. Dielectric barrier discharge dbd is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Development of dielectricbarrierdischarge ionization. Kushner, fellow, ieee abstractnonarcing microdielectric barrier discharges mdbds using radiofrequency excitation are attractive in that the arrays of devices can be inexpensively produced to. Performance characterization and quantification of dielectric. Dielectric barrier discharge, ozone generation, and their applications complex plasmas summer institute 2008 jose l.
A high voltage, microprocessor controlled, research system used by many universities, institutes, and industry members to generate and study dielectric barrier discharges. Electrical and spectroscopic investigations on atmospheric. Chemical and electrical diagnosis of two configurations of. Whether the plasma jets can be considered as classical dbds or.
Lopez saint peters college department of applied science and technology physics division jersey city, new jersey usa. Dielectric barrier discharge for ammonia production. In this experiment, singlelayer barrier tube plasma reactor was used to study the influence of o 2 and c 2 h 4 ethylene to no removal rate. Sharma microwave tubes area, central electronics engineering research institute ceeri a constituent laboratory of council of scienti. In this study, a gas chromatography gc system was interfaced to a highresolution orbitrap mass spectrometer by means of an active capillary plasma ionization source, based on dielectric barrier discharge ionization dbdi. Dielectric barrier discharges make use of a high frequency field applied through a protective and currentlimiting dielectric barrier to develop a plasma discharge in the gap between dielectrics. They combine the aduantages of nonequilibrium plasma properties with the ease. Publishers pdf, also known as version of record includes final page, issue and. The discharge operates in steady state and its properties are comparable with rf discharges or capacitively coupled plasmas at low and medium pressure 102106.
Electron current from an rf microdielectric barrier discharge. Nari enhanceddielectricbarrierdischargebodyforcegeneraonusing. Modeling of dielectric barrier discharge plasma actuator. Kushner university of illinois deparment of electrical and computer engineering. Dielectric barrier discharge dbd plasmas and their. Author links open overlay panel yufang guo a xiaobin liao a b jianhua he a weijian ou a daiqi ye b. The discharge is a transient diffused glow at low frequency alternating voltage 60 hz and changes to a. Effect of manganese oxide catalyst on the dielectric barrier discharge decomposition of toluene. Dielectricbarrier discharge dbd is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Dbds are known under different names like barrier discharge, silent discharge, ac discharge, normal pressure glow discharge, ozonizer discharge and display discharge. Dielectricbarrier discharges silent discharges are used on a large industrial scale. Effects and mechanism of atmosphericpressure dielectric barrier discharge cold plasmaon lactate dehydrogenase ldh enzyme skip to. Dielectric barrier discharge is characterized by inserting one or more dielectrics between the high voltage and the ground electrode.
Results show that utilization of unipolar pulse has better performance when compared with the bipolar mode, but on the other hand, utilization of the positive pulse has slightly higher. Methanol production in ac dielectric barrier discharge. Detailed investigations into the properties of this nonequilibrium discharge which can be conveniently operated at about atmospheric pressure led to a. Dbd is one of the most advantageous of ntp technologies. Effects of different waveforms on the performance of. An overview of possible applications is provided by moreau 155 or corke et. Discharge characteristics were investigated to understand the. Catalytic dielectric barrier discharge plasma reactor for methane and carbon dioxide conversion istadi 1. An indirect ammonia synthesis system by using dielectric. However, once dissolved in the liquid phase, these species will combine with.
Derivatives of graphene are graphite oxide and graphene oxide. There are a grand total of two sentences there concerning the apparent article topic, which is. The feed gases, methane, helium, and oxygen were introduced into the discharge system via three mass flow controllers. Since dc cannot pass through insulating dielectric, the power applied to a dbd should be ac or pulsed high voltage power. Carbon dioxide splitting in a dielectric barrier discharge.
In this work, a twodimensional fluid model is built to investigate the effects of the barrier dielectric. Pdf ozone production with dielectric barrier discharge. Study on no conversion characteristics in dielectric barrier. Dielectric barrier discharges dbds, also referred to as barrier discharges or silent discharges have for a long time been exclusively related to ozone generation. There has been increasing interest in dielectric barrier discharge. In chapter 4, we combine the miniature dbd with an analog circuit. Generally discharge pulse duration in the range of a few.
Removal from stationary diesel engine exhaust by barrier discharge plasma sankarsan mohapatro and b s rajanikanth hv lab, dept. The idea could be effective to reduce the invisible. Dielectric barrier discharge dbd the discharge, which occurs between two electrodes where at least one of the electrodes is covered by a dielectric, is called dielectric barrier discharge. Dec 20, 2012 the leading aftertreatment technology for nox removal process in diesel engines for stationary and mobile applications is the selective catalytic reduction of oxides of nitrogen nox by ammonia nh3. Their history, discharge physics, and industrial applications ulrich kogelschatz1 receiued april 5, 2002. Pdf dielectric barrier discharges dbds are plasmas generated in configurations with an.
They combine the advantages of nonequilibrium plasma properties with the ease of atmosphericpressure. The dbd plasma reactor of this study consisted of a quartz dielectric tube, titanium discharge inner and ground outer electrode. Uneven dielectric barrier discharge dbd reactors driven by positivenegative pulse plasma discharges were investigated for particulate matter pm removal from a diesel engine. Introduction dielectric barrier discharges dbds are selfsustaining electrical discharges in electrode con. In other words, the surface of the earth and the ionosphere sandwich the atmosphere and have a dielectric barrier discharge. Dielectric barrier discharges have been studied extensively, but not used successfully for analytical applications. Problems of the active power definition in the barrier 163 discharge with dielectric of high specific capacity.
The results obtained with glass as the dielectric barrier is presented here. A novel approach for cd vapor generation was developed on the basis of a plasmaassisted chemical process. This paper explains the bid detection principle and the construction of the detector. The term plasma actuator has now been a part of the fluid dynamics flowcontrol vernacular for more than a decade. However in this study, high barrier performance is achieved by combination of gas barrier layer and polymer film with low water vapor permeation constant. Siemens introduced dielectric barrier discharge for ozone production in 1857, but rst sistematic studies about ionized gases were undertaken a couple of decades later, when j. In order to understand the reaction mechanisms of no removal in dielectric barrier discharge reactor, the effect of gas composition on plasma reduction of no was studied. Dielectric barrier discharge dbd is a nonthermal plasma. Dielectric barrier discharges dbds are selfsustaining electrical discharges in electrode configurations containing an insulating material in the discharge path. View dielectric barrier discharge research papers on academia. Strictly speaking the discharge is not a dbd as the role of barrier is not to induce the self pulsing character.
Modeling dielectric barrier discharges in more than one dimension is possible, but the results can be difficult to interpret because of the amount of competing physics in the problem. Experimental study of lowpressure nitrogen dielectric. A novel nonthermal plasma electrode with a needle array in a dielectric barrier discharge reactor, powered by a high frequency neon transformer, is used for the thermal decomposition of solid. From measured values and an equivalent circuit model, we will derive lv characteristics of the gas discharge. Ozone and nitrogen oxides synthesis, energy 161 consumption. A prominent feature is the simple scalability from small laboratory reactors to large industrial installations with megawatt input powers. Improvement of gas barrier properties by combination of. Electrical and spectroscopic investigations on atmospheric pressure dielectric barrier discharge plasma anand kumar srivastava birla institute of technology, mesra jaipur campus, jaipur, rajasthan, india 302017 e. Influence of no concentration on removal efficiency in multipointtoplane electrode dielectric barrier discharge reactor koichi takaki, taiki sato, jun naito, seiji mukaigawa and tamiya fujiwara iwate university, ueda 435, morioka, iwate 0208551, japan. Ozone synthesis in the discharge with pulse supply. The dielectric barrier discharge detector principles of the dielectric barrier discharge. The electrical dynamics of dielectric barrier discharges pure.
Generally discharge pulse duration in the range of a few tens to a few hundreds. Abstract this paper reports plasma treatment of a 5 hp. Measurement of plasma power consumption in dielectric. Localized material growth by a dielectric barrier discharge. Modeling of dielectric barrier discharge plasma actuator balaji jayaraman, youngchang cho and wei shyy department of aerospace engineering university of michigan, ann arbor, mi 48109 glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow, and operate as an actuator for flow control. The authors have developed a new dielectric barrier discharge ionization detector bid exploiting dielectric barrier discharge in helium gas as an electrical discharge method that does not readily cause overheating and sputtering of the electrodes. Residence time investigation in a coaxial dielectric barrier. Glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow and operate as an actuator for flow control 16. Numerical optimization research on the dielectric barrier. Simultaneous remediation of no x and oxidation of soot using dielectric barrier discharges rajesh dorai and mark j.
The device is a laboratory scale unit, similar to that previously described in 2. Lee, wonseok jung, jaewoo chung, yuri choi, moohyun cho, and won namkung. Characteristics of microdischarge depend on electrode configurations. Pdf uneven dielectric barrier discharge reactors for diesel. No matter what they are called, they are constructed in the same general manner. Alma mater studiorum universita degli studi di bologna. To solve this problem, filler fluorination with dielectric barrier discharge dbd plasma and chemical methods were designed to modify the tio 2 filler.
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