Microplasma Trapping of Particles

Xue, Jiang; Hopwood, Jeffrey

doi:10.1109/tps.2007.905210

Cited by 18 publications

(11 citation statements)

References 18 publications

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“…A microplasma is a non‐equilibrium plasma less than 1 mm in any dimension that operates at atmospheric pressures . Small particles, or dust, introduced to such a plasma become negatively charged, allowing suspension in the electric field generated by the plasma . The particles are heated through collisions with plasma particles, prompting thermal emission of photons according to the emissivity properties of the dust material.…”

Section: Fixed Spectrum Emittersmentioning

confidence: 99%

Selective emitters for thermophotovoltaic applications

Pfiester¹,

Vandervelde

2016

Physica Status Solidi (a)

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Applying thermophotovoltaic (TPV) technologies to existing energy generators allows us to increase energy output while utilizing present infrastructure by reclaiming the heat lost during the production process. In order to maximize the efficiency of these sources, the conversion efficiency of the TPV system needs to be optimized. Selective emitters are often used to tailor the spectrum of incident light on the diode, blocking any undesirable light that may lead to device heating or recombination. Over the years, many different technologies have been researched to create an ideal selective emitter. Plasmas and rare‐earth emitters provided highly selective spectra early on, but their fixed peaks required tailoring the diode's band gap to the emitter's characteristic wavelength. Recent advances in engineerable materials, such as photonic crystals and metamaterials, allow the opposite to take place; an appropriate selective emitter can be designed to match the TPV diode, allowing the diode structure to be optimized independently from the emitter.

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Section: Fixed Spectrum Emittersmentioning

confidence: 99%

Selective emitters for thermophotovoltaic applications

Pfiester¹,

Vandervelde

2016

Physica Status Solidi (a)

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“…Therefore, the bulk plasma density n bulk can be calculated to be about 8.3 × 10 20 m −3 , where the density value is consistent with the values given by previous studies for argon microplasma jets in ambient air. [1][2][3][4][5][6][7][8][9][10][11][12][13][14]27]…”

Section: Efficiency Impedance and Bulk Plasma Densitymentioning

confidence: 99%

“…[6][7][8][9] To further investigate the low-power microwave-driven atmospheric plasma devices, many researches have focused on optimizing the device structure for acquiring special plasma composition, plasma size, and more efficient energy absorbed by plasmas. [10][11][12][13][14] There are four types of low-power microwave resonators: coaxial transmission line resonators (CTLR), [1] microstrip line resonators, [2] surfatron launchers, [15] and surface-wave plasma jets, [16][17][18] which are all constructed for satisfying different application demands. The plasma jet using CTLR can yield plasma plume like a pencil tip in open air, especially the CTLR jets reported by Lee et al, [1] which are more suitable for localized three-dimensional plasma treatments.…”

Section: Introductionmentioning

confidence: 99%

Pulsed microwave-driven argon plasma jet with distinctive plume patterns resonantly excited by surface plasmon polaritons

et al. 2015

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Atmospheric lower-power pulsed microwave argon cold plasma jets are obtained by using coaxial transmission line resonators in ambient air. The plasma jet plumes are generated at the end of a metal wire placed in the middle of the dielectric tubes. The electromagnetic model analyses and simulation results suggest that the discharges are excited resonantly by the enhanced electric field of surface plasmon polaritons. Moreover, for conquering the defect of atmospheric argon filamentation discharges excited by 2.45-GHz of continued microwave, the distinctive patterns of the plasma jet plumes can be maintained by applying different gas flow rates of argon gas, frequencies of pulsed modulator, duty cycles of pulsed microwave, peak values of input microwave power, and even by using different materials of dielectric tubes. In addition, the emission spectrum, the plume temperature, and other plasma parameters are measured, which shows that the proposed pulsed microwave plasma jets can be adjusted for plasma biomedical applications.

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“…This particle classification is commonly performed using a Differential Mobility Analyzer (DMA) [62]. In their work, Xue and Hopwood [63] have generated argon microplasmas in a 350 μm microstrip transmission line discharge. This microplasma device is alternatively used for the classification and detection of nanoparticles by basically negatively charging the microparticles using stray electrons, directing them towards the potential well of the microplasma, and therefore trapping the nanoparticles within the microplasma.…”

Section: Microstrip Microplasma (Ms)mentioning

confidence: 99%