Penetration of Ar and He RF-driven plasma jets into micrometer-sized capillary tubes

Brahme, Amita; Chang, Zhengshi; Zhao, Ni; Kondeti, V. S. Santosh K.; Bruggeman, Peter

doi:10.1088/1361-6463/aad883

Cited by 16 publications

(32 citation statements)

References 35 publications

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“…Works concerning interactions of Ar APPJs with dielectric targets (grounded or not) are also available in the literature [19][20][21][22][23][24][55][56][57]. Most of them, though, use AC waveforms (kHz-MHz frequency range) for plasma generation, and the APPJ characterization is done by means of voltage-current, timeintegrated imaging, and emission spectroscopy methods [19][20][21][22]56,57].…”

Section: Ir and Iccd Imagingmentioning

confidence: 99%

“…Most of them, though, use AC waveforms (kHz-MHz frequency range) for plasma generation, and the APPJ characterization is done by means of voltage-current, timeintegrated imaging, and emission spectroscopy methods [19][20][21][22]56,57]. Only few works, also using AC power supplies, have combined the previous experimental methods with ICCD imaging for similar studies [23,24,55]. The present work uses a kHz ns-pulsed excitation to form an Ar APPJ.…”

Section: Ir and Iccd Imagingmentioning

confidence: 99%

“…For Ar APPJs, numerous works can be found referring mostly to the surface modification of polymeric materials [19][20][21][22]. Contrary to He jets, fewer studies focusing on the dynamics of Ar APPJs impinging on substrates have been published so far [2,4,13,[23][24][25][26][27]. Among them, the improvement of the stability of a ns-pulsed APPJ when impinging on a floating-potential glass plate was reported lately by our group [2,27].…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of a ns-pulsed argon plasma jet for the fast desorption of weakly volatile organic compounds deposited on glass substrates at variable electric potential

Vazquez¹,

Bauville²,

Blin-Simiand³

et al. 2020

J. Phys. D: Appl. Phys.

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Experimental investigation of a ns-pulsed argon plasmajet for the fast desorption of weakly volatile organic compounds deposited on glass substrates at variable electric potential

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Section: Ir and Iccd Imagingmentioning

confidence: 99%

Section: Ir and Iccd Imagingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental investigation of a ns-pulsed argon plasma jet for the fast desorption of weakly volatile organic compounds deposited on glass substrates at variable electric potential

Vazquez¹,

Bauville²,

Blin-Simiand³

et al. 2020

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…The limited penetration diameter of 250 µm is observed for He and argon (Ar) plasma jets. [23] Over all, the aforementioned tube diameter decreases from 2000 to 70 µm. What are the properties of the microplasma as the tube diameter is further reduced?…”

Section: Introductionmentioning

confidence: 96%

“…By a RF‐driven plasma jet impinging on a capillary, the plasma penetration and the plasma propagation inside capillaries with different inner diameters are investigated. The limited penetration diameter of 250 µm is observed for He and argon (Ar) plasma jets . Over all, the aforementioned tube diameter decreases from 2000 to 70 µm.…”

Section: Introductionmentioning

confidence: 99%

The effects of the tube diameter on the discharge ignition and the plasma properties of atmospheric‐pressure microplasma confined inside capillary

Liu

et al. 2019

Plasma Processes & Polymers

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With plasma penetration into a capillary and the assistant of an air DBD, an ac‐driven Ar microplasma plume having a length of several cm is generated inside the capillary. The inner diameter of the capillary ranges from 4 to 100 µm. When the tube diameter decreases, the length of the microplasma plume decreases, and while the ignition voltage, the current density, and the electron density increase significantly. For the tube diameter of 9 µm, the current density and the electron density measured from the Stark broadening of Hα line reach as high as 109 A m−2 and 11 × 1016 cm−3, respectively. The microplasma plume is of high degree of ionization and remains non‐thermal. Rather than monotonically increasing, the propagation velocity of the microplasma plume decreases and then keeps almost unchanged after the tube diameter reaches 20 µm.

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Influence of pulse modulation frequency on helium RF atmospheric pressure plasma jet characteristics

Mahreen

Prakash

Kar

et al. 2022

Contributions to Plasma Physics

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This work investigates the influence of pulse modulation frequency ranging from 50 Hz–10 kHz on the helium RF atmospheric pressure plasma jet's fundamental characteristics. The impact of modulation frequency on plasma jet discharge behaviour, geometrical variation, reactive species emission, and plasma parameters (gas temperature Tg, electron excitation temperature Texc, and electron density (ne)) are studied using various diagnostics such as optical imaging, emission spectra, and thermal diagnostic. From the experiments, it is observed that operating the plasma jet at low pulse modulation frequencies (around 50 Hz) provides enhanced plasma dimensions, higher electron densities and greater optical emission from reactive species (viz., He I, O, OH, N2+, etc.) as compared to the higher modulation frequencies. Besides the low power consumption, three times less gas temperature of the modulated plasma jet than the continuous wave mode makes it more advantageous for the applications. Moreover, the influence of duty cycle (D) and applied RF power (P) on the plasma jet characteristics are also discussed. It is found that 10–40% duty cycle operation provides the most favourable attributes. More importantly, the concern of shorter plasma length in RF plasma jets is overcome by operating at 10–20% duty cycle with increased applied power. This work thoroughly characterizes helium atmospheric pressure RF plasma jet with a wide range of pulse mode operating parameters, which could help to select appropriate operating conditions for various industrial and biomedical applications.

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Penetration of Ar and He RF-driven plasma jets into micrometer-sized capillary tubes

Cited by 16 publications

References 35 publications

Experimental investigation of a ns-pulsed argon plasma jet for the fast desorption of weakly volatile organic compounds deposited on glass substrates at variable electric potential

Experimental investigation of a ns-pulsed argon plasma jet for the fast desorption of weakly volatile organic compounds deposited on glass substrates at variable electric potential

The effects of the tube diameter on the discharge ignition and the plasma properties of atmospheric‐pressure microplasma confined inside capillary

Influence of pulse modulation frequency on helium RF atmospheric pressure plasma jet characteristics

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