The dielectric barrier discharge — a powerful microchip plasma for diode laser spectrometry

Miclea, M.; Kunze, Kerstin E.; Musa, G.; Franzke, Joachim; Niemax, K.

doi:10.1016/s0584-8547(00)00286-x

Cited by 129 publications

(92 citation statements)

References 8 publications

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“…7) suitable for analytical applications. 45 The discharge chamber consists of two glass plates covered with aluminum electrodes ( spacers in between the glass plates define the distance of 1 mm between the electrodes and form the plasma channel of 1 ϫ 1 ϫ 50 mm 3 . The discharge works at reduced pressures of 10-100 hPa in argon as well as helium with a gas flow of 10-1000 mL/min.…”

Section: Low-frequeny Plasmasmentioning

confidence: 99%

Sample Analysis with Miniaturized Plasmas

Franzke

Miclea

2006

Appl Spectrosc

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Section: Low-frequeny Plasmasmentioning

confidence: 99%

Sample Analysis with Miniaturized Plasmas

Franzke

Miclea

2006

Appl Spectrosc

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“…Elemental information could be readily obtained by using diode laser atomic absorption spectrometry with miniaturized discharges, e.g. the barrier-layer discharge, as atom reservoir -as developed and recently described by Miclea et al [38]. Their discharge chamber comprises two glass plates, each with a 50-mm long aluminium electrode deposited by Al vapour deposition (thickness 0.1 µm, width 800 µm) on which a 20 µm glass layer was provided as dielectric layer.…”

Section: Glow-discharge Plasma Sourcesmentioning

confidence: 99%

The development of microplasmas for spectrochemical analysis

Broekaert

2002

Anal Bioanal Chem

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Miniaturized microwave, high-frequency, and dc-powered microplasmas are discussed, with emphasis on the state-of-the-art and development trends. Specific atomic emission sources discussed include the microstrip microwave plasma operated in argon and helium at ca 10-30 W and below 1 L min(-1) gas at atmospheric pressure, the capacitively coupled microplasma, operated at 13.56 MHz, 5-25 W, and 17-150 mL min(-1) helium, the miniaturized inductively coupled plasma operated at several watts and reduced pressure, and dc glow-discharge plasmas on a chip, including a barrier-layer discharge as atom reservoir for atomic absorption spectrometry. Diagnostics for these sources are discussed and some of their figures of merit are compared with those of conventional sources. Current possibilities for introduction of gaseous samples are reported and scope for further development and outlook are both discussed.

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“…A review of microplasma developments in microanalytical instrumentation was recently published by Karanassios [1]. The variety of microplasma sources spans the frequency spectrum: dc [2,3], dc microhollow cathodes [4][5][6][7], ac dielectric barriers [8], RF coronas [9,10], RF capacitively [11,12] and inductively [13] coupled plasmas, and microwave induced [14][15][16] microplasma sources have been reported. However, long-term operation in air at 1 atm with portable power has been elusive.…”

Section: Introductionmentioning

confidence: 99%

A microfabricated atmospheric-pressure microplasma source operating in air

Hopwood¹,

Iza²,

Coy³

et al. 2005

J. Phys. D: Appl. Phys.

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An atmospheric-pressure air microplasma is ignited and sustained in a 25 µm wide discharge gap formed between two co-planar gold electrodes. These electrodes are the two ends of a microstrip transmission line that is microfabricated on an Al 2 O 3 substrate in the shape of a split-ring resonator operating with a resonant frequency of 895 MHz. At resonance, the device creates a peak gap voltage of ∼390 V with an input power of 3 W, which is sufficient to initiate a plasma in atmospheric pressure air. Optical emission from the discharge is primarily in the ultraviolet region. In spite of an arc-like appearance, the discharge is not in thermal equilibrium as the N 2 rotational temperature is 500-700 K. The intrinsic heating of the Al 2 O 3 substrate (to 100˚C) causes a downward shift in the resonant frequency of the device due to thermal expansion. The temperature rise also results in a slight decrease in the quality factor (142 > Q > 134) of the resonator. By decreasing the power supply frequency or using a heat sink, the microplasma is sustained in air. Microscopic inspection of the discharge gap shows no plasma-induced erosion after 50 h of use.

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The dielectric barrier discharge — a powerful microchip plasma for diode laser spectrometry

Cited by 129 publications

References 8 publications

Sample Analysis with Miniaturized Plasmas

Sample Analysis with Miniaturized Plasmas

The development of microplasmas for spectrochemical analysis

A microfabricated atmospheric-pressure microplasma source operating in air

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