Coaxial rf atmospheric pressure dielectric barrier air–helium plasma characteristics

Güleç, Ali; Öksüz, Lütfi; Hershkowitz, N.

doi:10.1016/j.physleta.2011.02.070

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…Temporal structures of different plasmas have been investigated in [10] and [11]. The motivation was the observation of time evolution of a mw helium discharge.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Pressure 2.45-GHz Microwave Helium Plasma

Güleç

Bozduman²,

Hala

2015

IEEE Trans. Plasma Sci.

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A waveguide-based microwave plasma system was built using a resonant cavity and a quartz tube. 2.45 GHz 850 W magnetron was used to obtain helium discharge without an igniter. The temporal images of discharge were recorded on microsecond time scales using an intensified charge-coupled device camera. The excitation temperature was calculated as 3385 K using the helium lines, which were obtained from emission spectrum of the discharge. The gas temperature was measured as 1208 K by a thermocouple.

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“…Temporal structures of different plasmas have been investigated in [10] and [11]. The motivation was the observation of time evolution of a mw helium discharge.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Pressure 2.45-GHz Microwave Helium Plasma

Güleç

Bozduman²,

Hala

2015

IEEE Trans. Plasma Sci.

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Plasma Technology, Nanoengineering of Advanced Materials

Manolache¹,

Şaşmazel²,

Uygun³

et al. 2012

Kirk-Othmer Encyclopedia of Chemical Technology

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In the last century Langmuir started the investigation of plasma. Since then scientists have been investigating the great energetic potential of plasma chemistry for chemical transformations, macromolecular depositions and surface modification of materials, especially polymers. Recently, nanoscale investigations in various scientific fields point out the importance of nanostructures (nanoparticles, nanopatterns, nanotopographies, nanocomposites) for advanced material properties and for extending these properties (eg, mechanical, electrical, hydrophilicity, hydrophobicity, etc.) beyond typical material properties. Plasmas have unique properties due to high energetic level combined with presence of very active species: radicals, ions and electrons; complex chemical mechanisms can develop to deposit macromolecular layers or to produce nanostructures on various surfaces for advanced material properties beyond bulk properties of polymers. Cold plasma as source for charged particles was used to induce nanotopographies on homopolymeric surfaces and for surface nanoengineering of polymers using vacuum operated or atmospheric pressure non‐equilibrium barrier discharge reactors. SEM and AFM analyses reveal the presence of nanotopographies on the treated surfaces. Physical factors control the process below the glass‐transition temperature, T g and chemical factors dominate the process above T g . Charges are tools that open‐up new ways for nanoengineering of the polymers' surfaces with specific functionalities / topography. Future nanomanufacturing techniques can generate anti‐scratch, superhydrophobic or superhydrophilic properties on surface of everyday use polymeric products by simple and convenient plasma enhanced processes.

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One-Dimensional Modeling on the Asymmetric Features of a Radio-Frequency Atmospheric Helium Glow Discharge Produced Using a Co-Axial-Type Plasma Generator

Wang

Gao

et al. 2012

Plasma Chem Plasma Process

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Coaxial rf atmospheric pressure dielectric barrier air–helium plasma characteristics

Cited by 5 publications

References 25 publications

Atmospheric Pressure 2.45-GHz Microwave Helium Plasma

Atmospheric Pressure 2.45-GHz Microwave Helium Plasma

Plasma Technology, Nanoengineering of Advanced Materials

One-Dimensional Modeling on the Asymmetric Features of a Radio-Frequency Atmospheric Helium Glow Discharge Produced Using a Co-Axial-Type Plasma Generator

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