Characterizations of strip-line microwave micro atmospheric plasma and its application to neutralization

Ogata, Ken; Terashima, Kazuo

doi:10.1063/1.3153972

Cited by 10 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This technique has also been used to determine the electron density, with values as high as 10 20 m −3 [98]. Alternatively, millimetre wave transmission [99] and broadening of the hydrogen emission line have been used to measure electron densities and estimated to be between 10 19 m −3 and 10 21 m −3 [9,[100][101][102][103][104][105]. Experimental techniques for measuring the gas temperature are well established and straightforward due to the relatively small space-time variations associated with the neutrals.…”

Section: Simulation and Experimental Investigations Of The Mprmentioning

confidence: 99%

“…Experimental techniques for measuring the gas temperature are well established and straightforward due to the relatively small space-time variations associated with the neutrals. In addition to thermocouple measurements [106] and thermal imaging [101], optical monitoring of molecular emission bands for OH and N 2 has revealed that a range of temperatures exist from room temperature up to 2500 K [100,[102][103][104][105].…”

Section: Simulation and Experimental Investigations Of The Mprmentioning

confidence: 99%

See 1 more Smart Citation

Microplasmas for nanomaterials synthesis

Mariotti¹,

Sankaran²

2010

J. Phys. D: Appl. Phys.

517

399

View full text Add to dashboard Cite

Microplasmas have attracted a tremendous amount of interest from the plasma community because of their small physical size, stable operation at atmospheric pressure, non-thermal characteristics, high electron densities and non-Maxwellian electron energy distributions. These properties make microplasmas suitable for a wide range of materials applications, including the synthesis of nanomaterials. Research has shown that vapour-phase precursors can be injected into a microplasma to homogeneously nucleate nanoparticles in the gas phase. Alternatively, microplasmas have been used to evaporate solid electrodes and form metal or metal-oxide nanostructures of various composition and morphology. Microplasmas have also been coupled with liquids to directly reduce aqueous metal salts and produce colloidal dispersions of nanoparticles. This topical review discusses the unique features of microplasmas that make them advantageous for nanomaterials synthesis, gives an overview of the diverse approaches previously reported in the literature and looks ahead to the potential for scale-up of current microplasma-based processes.

show abstract

Section: Simulation and Experimental Investigations Of The Mprmentioning

confidence: 99%

Section: Simulation and Experimental Investigations Of The Mprmentioning

confidence: 99%

Microplasmas for nanomaterials synthesis

Mariotti¹,

Sankaran²

2010

J. Phys. D: Appl. Phys.

517

399

View full text Add to dashboard Cite

show abstract

“…For the low-energy electrons, they are in the non-local regime [20,22]. According to figure 5, the lengths of the lowenergy electrons (∼1 eV) are about 0.5 mm.…”

Section: Discussionmentioning

confidence: 98%

Different patterns of high-energy and low-energy electrons in an atmospheric-pressure microplasma generated by a hairpin resonator

Tian

Zhu²,

Pu³

2010

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

A newly developed device, a hairpin resonator, is used to generate an atmospheric-pressure microplasma with a 1.8 GHz power supply in argon. The two-dimensional distributions of emission lines in such a microplasma are obtained by a spatially resolved optical system. For the first time, it is found that the distributions of high-energy and low-energy electrons have different patterns. The density distribution of the high-energy electrons (with energy higher than that of argon 2p levels) is obtained from the line intensity, while the density of the low-energy ones (approximately equal to the total electron density) is deduced from the emission line ratios. The difference in distribution between the two groups of electrons is related to the different energy-loss characteristic lengths.

show abstract

Recent developments in instrumentation of microwave plasma sources for optical emission and mass spectrometry: Tutorial review

Jankowski

Reszke²

2013

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

This paper reviews the most common methods of generation of plasmas using microwaves with special emphasis on recently developed microwave plasma (MWP) sources for analytical applications. The art and science of microwave plasma optical and mass spectroscopy instrumentation (MWP-OES/MS), and the applications are briefly presented, including very recent advances in the field as of 2012. The design and operation of MWPs is discussed to provide a basic understanding of the most important selection criteria when designing MWP systems. The various plasma generation systems described include single-electrode capacitive microwave plasmas, electrodeless inductively coupled plasmas, multi-electrode systems energized with stationary or rotating fields. We also discuss various technical realizations of MWP sources for selected applications. Examples of technical realizations of plasmas in closed structures (cavities), in open structures (surfatrons, planar plasma sources), and in magnetic fields (Hammer cavity) are discussed in detail. Finally, we mention micro-and mini-discharges as convenient sources for miniaturized spectrometric systems. Specific topics include fundamental aspects of MWP, i.e., recent advances in the construction of analytical MWPs (coaxially coupled cavities, strip-line technology, multi-point energizing, power combining, rotating fieldexcited plasmas), operational characteristics, analytical characteristics and applications. Special reference is made to coupling with OES for determination of chromatographic effluents and particle sizing. The developments in elemental and molecular MS applications in both low-power and high-power MWPs are also discussed.

show abstract

Characterizations of strip-line microwave micro atmospheric plasma and its application to neutralization

Cited by 10 publications

References 21 publications

Microplasmas for nanomaterials synthesis

Microplasmas for nanomaterials synthesis

Different patterns of high-energy and low-energy electrons in an atmospheric-pressure microplasma generated by a hairpin resonator

Recent developments in instrumentation of microwave plasma sources for optical emission and mass spectrometry: Tutorial review

Contact Info

Product

Resources

About