Arc‐Free Atmospheric Pressure Cold Plasma Jets: A Review

Laroussi, Mounir; Akan, Tamer

doi:10.1002/ppap.200700066

Cited by 610 publications

(337 citation statements)

References 72 publications

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“…A detailed discussion of various properties of barrier discharges and their important industrial applications can also be found in the book Non-Equilibrium Air Plasmas at Atmospheric Pressure by Becker et al [4]. More recent research activities focus on DBD torches [5], on flow control [6] and on biomedical applications [7]. In this contribution the focus is on the discharge physics, mainly on collective phenomena such as filamentation, pattern formation and selforganization, and on the conditions for obtaining diffuse, laterally homogeneous discharges.…”

Section: Introductionmentioning

confidence: 99%

Collective phenomena in volume and surface barrier discharges

Kogelschatz

2010

J. Phys.: Conf. Ser.

105

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Abstract. Barrier discharges are increasingly used as a cost-effective configuration to produce non-equilibrium plasmas at atmospheric pressure. This way, copious amounts of electrons, ions, free radicals and excited species can be generated without significant heating of the background gas. In most applications the barrier is made of dielectric material. Major applications utilizing mainly dielectric barriers include ozone generation, surface cleaning and modification, polymer and textile treatment, sterilization, pollution control, CO 2 lasers, excimer lamps, plasma display panels (flat TV screens). More recent research efforts are devoted to biomedical applications and to plasma actuators for flow control. Sinusoidal feeding voltages at various frequencies as well as pulsed excitation schemes are used. Volume as well as surface barrier discharges can exist in the form of filamentary, regularly patterned or diffuse, laterally homogeneous discharges. The physical effects leading to collective phenomena in volume and surface barrier discharges are discussed in detail. Special attention is paid to selforganization of current filaments and pattern formation. Major similarities of the two types of barrier discharges are elaborated.

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Section: Introductionmentioning

confidence: 99%

Collective phenomena in volume and surface barrier discharges

Kogelschatz

2010

J. Phys.: Conf. Ser.

105

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“…Clearly, the use of plasma in medicine opens up new vistas of novel therapies and medical technologies-a breakthrough that could well become as important as that which was initiated by antibiotics [8]. Of the many systems proposed for the generation of stable atmospheric-pressure plasma, the dielectric barrier discharge (DBD) jet has become the configuration of choice for many researchers [1,2]. A typical plasma jet consists of a capillary formed from a dielectric material through which a noble gas flows.…”

Section: Introductionmentioning

confidence: 99%

“…Low-temperature atmospheric-pressure plasma jets provide a unique opportunity to generate a non-equilibrium gas discharge that is rich in reactive chemical species yet is unbound by any electrode structure [1,2]. In addition to many industrial applications [3][4][5], such devices are finding increasing applications in the field of medicine; promising examples include prion inactivation [6], chronic wound treatment and cancer therapy [7,8].…”

Section: Introductionmentioning

confidence: 99%

Chaos in atmospheric-pressure plasma jets

Walsh¹,

Iza²,

Janson³

et al. 2012

Plasma Sources Sci. Technol.

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Abstract:We report detailed characterization of a low-temperature atmosphericpressure plasma jet that exhibits regimes of periodic, quasi-periodic and chaotic behaviors. Power spectra, phase portraits, stroboscopic section and bifurcation diagram of the discharge current combine to comprehensively demonstrate the existence of chaos, and this evidence is strengthened with a nonlinear dynamics analysis using two control parameters that maps out periodic, period-multiplication, and chaotic regimes over a wide range of the input voltage and gas flow rate. In addition, optical emission signatures of excited plasma species are used as the second and independent observable to demonstrate the presence of chaos and period-doubling in both the concentrations and composition of plasma species, suggesting a similar array of periodic, quasi-periodic and chaotic regimes in plasma chemistry. The presence of quasi-periodic and chaotic regimes in structurally unbounded low-temperature atmospheric plasmas not only is important as a fundamental scientific topic but also has interesting implications for their numerous applications. Chaos may be undesirable for industrial applications where cycle-tocycle reproducibility is important, yet for treatment of cell-containing materials including living tissues it may offer a novel route to combat some of the major challenges in medicine such as drug resistance. Chaos in low-temperature atmospheric plasmas and its effective control are likely to open up new vistas for medical technologies.2

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“…Physically, the breakdown mechanism of APPJs depends strongly on the electron multiplication, which controls the transition from Townsend breakdown to streamer breakdown. 16,17 Since the Townsend ionization coefficient and the mobility of charged species in the electric field depend on the gas properties, the gas type determines the electron multiplication and the breakdown mechanism as well as the discharge mode. In addition, different working gases produce different plasma species resulting in different interactions with the targets.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the characteristics of atmospheric pressure plasma jets using different working gases and applications to plasma-cancer cell interactions

et al. 2013

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Atmospheric pressure plasma jets employing nitrogen, helium, or argon gases driven by low-frequency (several tens of kilohertz) ac voltage and pulsed dc voltage were fabricated and characterized. The changes in discharge current, optical emission intensities from reactive radicals, gas temperature, and plume length of plasma jets with the control parameters were measured and compared. The control parameters include applied voltage, working gas, and gas flow rate. As an application to plasma-cancer cell interactions, the effects of atmospheric pressure plasma jet on the morphology and intracellular reactive oxygen species (ROS) level of human lung adenocarcinoma cell (A549) and human bladder cancer cell (EJ) were explored. The experimental results show that the plasma can effectively control the intracellular concentrations of ROS. Although there exist slight differences in the production of ROS, helium, argon, or nitrogen plasma jets are found to be useful in enhancing the intracellular ROS concentrations in cancer cells

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Arc‐Free Atmospheric Pressure Cold Plasma Jets: A Review

Cited by 610 publications

References 72 publications

Collective phenomena in volume and surface barrier discharges

Collective phenomena in volume and surface barrier discharges

Chaos in atmospheric-pressure plasma jets

Comparison of the characteristics of atmospheric pressure plasma jets using different working gases and applications to plasma-cancer cell interactions

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