On the heating of nano- and microparticles in process plasmas

Abstract

Determination and understanding of energy fluxes to nano-or microparticles, which are confined in process plasmas, is highly desirable because the energy balance results in an equilibrium particle temperature which may even initiate the crystallization of nanoparticles. A simple balance model has been used to estimate the energy fluxes between plasma and immersed particles on the basis of measured plasma parameters. Addition of molecular hydrogen to the argon plasma results in additional heating of the particles due to molecule recombination. The measured particle temperature is discussed with respect to appearing plasma-particle interactions which contribute to the particle's energy balance.

The 2017 Plasma Roadmap: Low temperature plasma science and technology

“…They lose energy through conduction to the neutral gas and radiation. Reproduced from [74]. © IOP Publishing Ltd. All rights reserved.…”

“…There are significant gaps in knowledge in understanding the interaction between plasmas and nanomat erials. Nanomaterials experience strong fluxes of radicals and charged particles with strong energy exchange with the plasma environment, leading to extreme non-equilibrium conditions during growth, as shown schematically in figure 13 [74]. Furthermore, the effects of the nanomaterials immersed in or in intimate contact with the plasma on the plasma itself need to be better understood.…”

Изменение Текстуры Поверхности Полимерных Материалов В Пылевой Плазме

“…Изучение поверхностных слоев различных материа-лов и их модификации в связи с развитием нанотех-нологий является актуальной темой исследований [1][2][3]. В [4][5][6] были опубликованы первые данные о воздей-ствии пылевой плазмы на полимерные частицы.…”

“…В разрядной трубке зажигался стратифицированный тлеющий разряд при условиях: Ne, p = 40 Pa, i = 2.5 mA. Монодисперсные сферические частицы меламин-формальдегида (MF-R), которые вбрасывались в плазму разряда, имели диаметр 7.3 ± 0.4 µm, плотность 1.5 g/sm 3 . В подобранных усло-виях частицы зависали в плазменно-пылевых ловушках и находились под воздействием плазмы от 5 до 25 min.…”

Controlling the growth of nanoparticles produced in a highpower pulsed plasma

“…The emissivity is a size dependent property when the wavelength of the emitted radiation is larger than the size of the particle, resulting in that smaller nanoparticles have a lower emissivity [58].…”