A long plasma column in a flexible tube at atmospheric pressure

Hong, Yong Cheol; Cho, Soon Cheon; Uhm, Han S.

doi:10.1063/1.2750652

Cited by 35 publications

(16 citation statements)

References 25 publications

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“…As the plasma plume cross section is more or less 1.3 mm, the tube with an inner diameter of 1.02 mm fits best of all tubes to this size. This observation is in close agreement with previously published results in which an excellent plasma propagation has also been observed when the size of the plasma source and flexible tube is almost the same. The reason of the plasma penetration has been associated with accumulation of the surface charge on the internal walls of the tubes resulting in an enhancement of the electric field inside the tubes …”

Section: Resultssupporting

confidence: 93%

Atmospheric Pressure Plasma Penetration inside Flexible Polymeric Tubes

Onyshchenko

Nikiforov

Morent

2015

Plasma Process. Polym.

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An atmospheric argon plasma jet has been used to explore the plasma penetration inside tubes of small diameter and the plasma treatment effect on the inner tube surface. The goal of this paper is to show how the tube size can influence the plasma jet penetration and the resulting surface effects on polyethylene tubes with diameters varying between 0.28 mm and 3.00 mm. Optical emission spectroscopy and light emission images have been used to investigate the distribution of active species along the tube length. To examine the plasma treatment effect on the inner tube surface, capillary action, water contact angle measurements and XPS analysis have been used. The results presented in this paper will clearly demonstrate the great potential of atmospheric pressure plasma jets for inner tube surface modification.

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Section: Resultssupporting

confidence: 93%

Atmospheric Pressure Plasma Penetration inside Flexible Polymeric Tubes

Onyshchenko

Nikiforov

Morent

2015

Plasma Process. Polym.

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“…As a matter of fact, it was reported that the atmospheric pressure argon plasma generated at 20 kHz with a typical injection needle placed in a Teflon tube was as long as 1000 mm. 9 The current and voltage were measured using a current probe ͑Pearson 4100͒ and a voltage probe ͑Tektronix P6015A͒, and wavelength-unresolved visible emission from the plasma was measured using a photomultiplier tube ͑Hamamatsu R928-10͒. Figure 2͑a͒ depicts waveforms of input voltage, total current, and optical emission signal of the LF plasma.…”

mentioning

confidence: 99%

Comparative study of atmospheric pressure low and radio frequency microjet plasmas produced in a single electrode configuration

Kim

Rhee

Gweon

et al. 2007

Applied Physics Letters

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Microsize jet-type plasmas were generated in a single pin electrode structure source for two separate input frequencies of 50kHz and 13.56MHz in the ambient air. The copper pin electrode radius was 360μm, and it was placed in a Pyrex tube with a radius of 3mm for helium gas supply. Due to the input frequency difference, the generated plasmas showed distinct discharge characteristics for their plasma physical appearances, electrical properties, gas temperatures, and optical properties. Strengths and weaknesses of both plasmas were discussed for further applications.

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“…Many plasma jet devices that produce a cold atmospheric-pressure plasma plume have been investigated for their use with thermally sensitive materials and medical applications [4][5][6][7][8][9][10][11][12]. For example, Nie et al [9] presented a simple cold plasma jet with a length of several centimeters that utilized floating electrodes in a quartz tube under high voltage.…”

Section: Introductionmentioning

confidence: 98%