A dielectric barrier discharge dbd lamp is disclosed. Pdf dielectric barrier discharges dbds are plasmas generated in configurations with an insulating. The dielectric is the key for the proper functioning of the discharge. The most efficient method to get cold plasma at atmospheric pressure is dielectric barrier discharge dbd. Successively accelerated ionic wind with integrated dielectricbarrier. Simulation tool for dielectric barrier discharge plasma. The dielectric barrier discharge has been the subject of extensive research by many researchers recently because of its simplicity in operation and yet with great. 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. Modeling of dielectric barrier discharge and resulting fluid.
A pretreatment reactor that forms a dielectric barrier discharge plasma at the. They combine the aduantages of nonequilibrium plasma properties with the ease. Optimization of dielectric barrier discharge plasma. Dielectric pellets were packed inside the glass tube. Depending on specific applications, plasma may be varied from diffuse to strongly filamentary mode. Dielectricbarrier discharges dbds comprise a specific class of highvoltage, ac, gaseous discharges that typically operate in the nearatmospheric pressure range. Both energies etotalt and et merge at the end of the discharge. Application of dielectric surface barrier discharge for food storage. To solve this problem, filler fluorination with dielectric barrier discharge dbd plasma and chemical methods were designed to modify the tio 2 filler. Carbon dioxide splitting in a dielectric barrier discharge plasma.
The dbd discharge has been generated in planar geometry reactor powered by ac voltage provided by conventional high voltage transformer. Apr 27, 2007 the most efficient method to get cold plasma at atmospheric pressure is dielectric barrier dischargedbd. Dielectric barrier discharge in atmospheric air for di. Dielectric barrier discharges dbds are a wellestablished method to. An atmosphericpressure dielectric barrier discharge apdbd can be generated by injecting into the reactor gap a working gas such as helium, argon, nitrogen, oxygen, air, etc or a mixture of them, while at least two electrodes are energized by an electric power supply such as dc pulsed or ac. Development of a dielectric barrier discharge ion source for. Modeling of dielectric barrier discharge and resulting fluid dynamics balaji jayaraman 1, siddharth thakur 2 and wei shyy 3 dept. Electrical characterization of dielectric barrier discharge. Dielectric barrier discharges dbds, also referred to as barrier discharges or silent discharges have for a long time been exclusively related to ozone generation. Radio frequency rf dielectric barrier discharge dbd actuators have been studied for their potential use to control. Jul 19, 2016 first test of dielectric barrier discharge. A16101electrical characterization of dielectric barrier discharge by dr. Blood coagulation and living tissue sterilization by floating.
The discharge vessel comprises an outer tubular portion having an internal surface, and an inner tubular portion having an outward surface. 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. Page 1 electrical characterization of dielectric barrier discharge dr. Dielectric barrier discharge, ozone generation, and their. Two plasma discharge modes are observed, regardless of the relative. Development of a dielectric barrier discharge ion source. Dielectric barrier discharges dbds are plasmas generated in configurations with an insulating. Report on the different plasma m odules for pollution removal. An 8kv dc voltage combining 25khz negative 8kv pulses was applied in the discharge simulation. Characteristics of microdischarge depend on electrode. Timeresolved evolution of microdischarges, surface. Power consumption, discharge capacitance and light emission as. A submerged dielectric barrier discharge plasma inactivation. Dielectric barrier discharge dbd dielectric barrier discharge dbd is similar to pulsed corona, in that its development was a result of trying to find a solution for avoiding arc formation.
Dielectricbarrier discharges silent discharges are used on a large industrial scale. Application of dielectric surface barrier discharge for. Dielectric barrier discharges in coplanar arrangements valentin i gibalov and gerhard j pietsch barrier discharges in coplanar electrode systems valentin i gibalov and gerhard j pietschrecent citations the statistical data on microdischarges of the surface dielectric barrier discharge unit based on aluminum nitride barrier alexander lazukin et al. Dielectric barrier discharge dbd is referred to as barrier discharges or silent inaudible discharges. Others mechanical devices such as vortex generator, slats and flaps produce noises and. In the reverse half of the cycle, electrons are supplied by surface discharges on the dielectric and move toward the metal electrode. Simulation tool for dielectric barrier discharge plasma actuators at atmospheric and subatmospheric pressures sbir phase i final report alexandre likhanskii techx corporation boulder, colorado 80303 1. Microbubbleenhanced dielectric barrier discharge pretreatment of.
Introduction dielectric barrier discharges dbds are selfsustaining electrical discharges in electrode con. In the case of dbd, a dielectric barrier is used to stop current and prevent arc formation. Nonlinear phenomena in dielectric barrier discharges. Microbubbleenhanced dielectric barrier discharge pretreatment of microcrystalline cellulose. An overview of corona discharge, arc discharge, dielectric barrier discharge dbd, surface discharge sd, atmospheric pressure glow discharge apgd and atmospheric pressure plasmas jet has been. Their history, discharge physics, and industrial applications ulrich kogelschatz1 receiued april 5, 2002. A new ion source based on dielectric barrier discharge was developed as an alternative ionization source for ambient mass spectrometry. Report on the different plasma m odules for pollution. Pdf dielectricbarrier discharges silent discharges are used on a large industrial scale. Selforganization of single filaments and diffusive.
Due to the manifold possibilities of configurations and discharge parameters, there are often used different terms for the same type of discharge. The discharge vessel further comprises a phosphor layer within the discharge volume. This socalled dielectric barrier is responsible for a selfpulsing plasma operation and thus, the formation of a nonthermal plasma at normal pressure. Intracellular electric fields produced by dielectric. Basics and biomedical applications of dielectric barrier. However, once dissolved in the liquid phase, these species will combine with. Electric wind produced by a surface dielectric barrier. Each power consumption value has been adjusted by combining different. It is known that the dbd can be occurred between two electrodes, at least one of which should be covered with dielectric, when an ac high voltage is applied on the electrodes. Dielectric barrier discharges have been studied extensively, but not used successfully for analytical applications.
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. Comparison of dielectric barrier discharge, atmospheric. The air discharge gap between the dielectric layers was varied from 1. Modeling of and driver design for a dielectric barrier. Dielectric barrier discharge dbd is a typical nonequilibrium high pressure ac gas discharge. Discharge voltage peak to peak versus frequency for 3. A magnetic field is introduced to the dielectric barrier discharge enhanced directcurrent glow discharge for efficient plasma generation, with the discharge power of 2. Modeling of and driver design for a dielectric barrier discharge lamp amgad amin eldeib doctor of philosophy graduate department of electrical and computer engineering university of toronto 2010 dielectric barrier discharge dbd excimer lamp is a very attractive source for ultraviolet uv radiation. Electrical characteristics and modeling of a filamentary. This diagnostic method is applicable when crosssectional area of the active plasma volume and current density can be determined. There are a grand total of two sentences there concerning the apparent article topic, which is. Atmosphericpressure dielectric barrier discharge generation.
The dbd lamp comprises a discharge vessel, which encloses a discharge volume filled with discharge gas. Characterization of dielectric barrier discharge in air. Pdf characteristics of dielectric barrier discharge. Capacitance and power consumption quantification of. Introduction remediation of toxic gases, chemical gas conversion, ozone generation, and plasma catalysis are examples of atmospheric pressure plasma applications which utilize dielectric barrier discharges dbds 1. A gapless microdielectricbarrierdischarge ion source for. It was used to make a flat spiral with three double turns which was placed on the bottom of a. Their defining feature is the presence of dielectric layers that make it impossible for charges generated in the gas to reach the conducting electrode surfaces. Modeling of dielectric barrier discharge plasma actuator.
Comparison of dielectric barrier discharge, atmospheric pressure radiofrequencydriven glow discharge and direct analysis in real time sources for ambient mass spectrometry of acetaminophen. Effects and mechanism of atmosphericpressure dielectric. The total oxidation of toluene in air was investigated using a dielectric barrier discharge dbd, both in the absence and in the presence of agal2o3 catalysts, placed downstream of the plasma reactor. Recently, biocidal properties of atmosphericpressure dbds have made them potentially a favorable system for the disinfection of living surfaces. The current behaviour of the plasma discharge is analyzed and timeaveraged and timeresolved measurements of the produced electric wind are proposed. The dielectric barrier consisted of two glass slabs, which cover both reactor electrodes. Dielectric barrier discharge dbd plasmas and their. In this simple model the problem is reduced to 1d by assuming the dielectric gap is much smaller than the diameter of the plates.
Combined cluster analysis and principal component analysis. Dielectric barrier discharge plasma actuator for flow control. Dielectricbarrier discharge dbd is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Their history, discharge physics, and industrial applications article pdf available in plasma chemistry and plasma processing 231. By this method, which has application area at industry, non.
And the second component to the gas discharge itself. Nov 15, 2016 a submerged dielectric barrier discharge plasma reactor underwater dbd has been used to inactivate biofilm produced by three different foodborne pathogens, namely escherichia coli o157. Characteristics of dielectric barrier discharge reactor. Aug 30, 20 dielectric barrier discharge using a ignition coil. They combine the advantages of nonequilibrium plasma. Dielectric barrier discharge dbd is a nonthermal plasma. Daisuke nonaka from shizuoka university, hamamatsu, for the fruitful discussions. Basics and biomedical applications of dielectric barrier discharge dbd, biomedical engineering, trends in materials science, anthony n. Dielectric barrier discharge dbd plasmas and their applications. A typical dielectric barrier discharge actuator is operated in relative humidity rh ranging from 40% up to 98%. Lopez saint peters college department of applied science and technology physics division jersey city, new jersey usa. Lopez, phd setoseto a u e s tyn hall university department of physics south orange, new jersey usa. Numerical modeling of dielectric barrier discharge based. This model simulates electrical breakdown in an atmospheric pressure gas.
For a typical dbd system, at least one of the electrodes is covered by a. Dielectric barrier discharge in atmospheric air for di erent. Dielectric barrier discharge plasma, 10kv, 10khz solid state unipolar pulses developed by growcontrols, email. Dielectric barrier discharge dbd is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Typical operational conditions of barrier discharges electric field strength e of first breakdown.
Dielectric barrier discharge properties and applications. 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. This socalled dielectric barrier is responsible for a selfpulsing plasma operation and thus, the formation of. Our dbds used a symmetric triangular high voltage waveform to generate plasma in atmospheric pressure air. The dielectric barrier discharge ionization source, termed as dbdi herein, was composed of a copper sheet electrode, a discharge electrode, and a piece of glass slide in between as dielectric barrier as well as sample plate. They combine the advantages of nonequilibrium plasma properties with the ease of atmosphericpressure operation. 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. Despite the fact that the signaltonoise ratio of cyclogrambased measurements is much better than that of a direct measurement of the discharge. Optimization of dielectric barrier discharge plasma actuators for active aerodynamic flow control flinto. Carbon dioxide splitting in a dielectric barrier discharge.
Single dielectric barrier discharge plasma enhanced. Glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow and operate as an actuator for flow control 16. A pretreatment reactor that forms a dielectric barrier discharge plasma at the gasliquid interface of the microbubbles has been developed and tested to pretreat. The effects of two fluorination methods on the microstructures, electrical parameters, and insulation properties of the materials were studied. In particular, asymmetric dielectric barrier discharge dbd plasma actuators are known to be e ective ehd device in aerodynamic control, 4, 5. Issue 10 decemer 015 dielectric barrier discharge based plasma actuators for flow control al10052 where n i is the density of the ith species and v i is its velocity. Dielectricbarrier discharges dbds, also referred to as barrier discharges or silent discharges have for a long time been exclusively related to ozone generation. Selforganization and migration of dielectric barrier. Measurements and simulations of surface dielectric barrier.
A prominent feature is the simple scalability from small laboratory reactors to large industrial installations with megawatt input powers. Dielectric barrier discharge dbd plasma actuator is becoming a popular device in aeronautics application. For a single dielectric barrier discharge, during onehalf of the ac cycle, electrons leave the metal electrode and move towards the dielectric where they accumulate locally. A dielectric barrier discharge dbd is produced when at least one of the electrodes of a gas discharge powered by an alternating or pulsed current source is covered by dielectric. Characteristics of microdischarge depend on electrode configurations. It has been used in many applications such as displays, mobile devices and solar cells. Nikita bibinov, priyadarshini rajasekaran, philipp mertmann dirk wandke, wolfgang viol and peter awakowicz january 8th 2011.
Applications of dielectric barrier discharge microplasma intechopen. Dielectric barrier discharge in atmospheric air for di erent barrier materials 1299 c b. Dielectric barrier discharge, ozone generation, and their applications complex plasmas summer institute 2008 jose l. A lowpower magneticfieldassisted plasma jet generated by. On right, the schematic diagram shows a typical construction of a dbd wherein one of the. The dbd system consisted of a stainless steel cylinder with. Concearning the stability and enhancement the role of dielectric barrier discharge dbd in medical applications, i would like to ask about the more effected type of used dielectric materials in. Detailed investigations into the properties of this nonequilibrium discharge which can be conveniently operated at about atmospheric pressure led to a. Dielectric barrier discharges dbds are widely used for various applications, including polymer treatment, lighting, and ozone production.
Asymmetric surface dielectric barrier discharges dbds have shown promise for use as aerodynamic actuators which can prevent. Jun 15, 2006 the presented floatingelectrode dielectric barrier discharge plasma is proven electrically safe to human subjects and our results show no gross visual or histological microscopic damage to skin samples in minutes, complete tissue sterilization from skin flora in seconds, and blood clot formation in seconds of electric plasma treatment. Introduction dielectric barrier discharge dbd is a popular discharge system for generating lowtemperature plasmas. Yassine bellebna, rabah ouiddir, said nemmich, amar tilmatine apelec laboratory, djillali liabes university of sidi belabbes, algeria. Dielectric barrier discharges silent discharges are used on a large industrial scale. Figure 4 shows a dielectric barrier discharge dbd reactor used for nh 3 generation.
102 918 534 909 738 928 1369 515 2 1102 1155 266 420 360 978 1314 102 1250 1050 1435 1077 199 1372 805 825 814 97 10 656 313 281 435 865 412 1255 622 524 793 1386 900 43 1356 696 288 1166 705 1453 257 1017 369