In situ nanoparticle size measurements of gas-borne silicon nanoparticles by time-resolved laser-induced incandescence

Sipkens, Timothy A.; Mansmann, Raphael; Daun, Kyle J.; Petermann, Nils; Titantah, J. T.; Karttunen, Mikko; Wiggers, Hartmut; Dreier, Thomas; Schulz, Christof

doi:10.1007/s00340-013-5745-2

Cited by 63 publications

(34 citation statements)

References 55 publications

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“…In the study of Mo particles by LII using 1064nm laser excitation [540], the combination of irradiation and ablation of particles produces a spectrum with atomic emission superimposed upon non-zero incandescence spectra. Incandescence radiation of material is believed to occur more easily when electrons are difficult to be excited in materials with high bandgap energy or non-metal materials like soot and Si [542]. When the laser intensity is high enough to breakdown all the matter (i.e.…”

Section: Phase-selective Laser Induced Breakdown Spectroscopymentioning

confidence: 99%

Flame aerosol synthesis of nanostructured materials and functional devices: Processing, modeling, and diagnostics

Ren

Biswas

et al. 2016

Progress in Energy and Combustion Science

259

148

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Manufacturing of nanostructured materials and functional devices offers many exciting opportunities for scientists and engineers to contribute substantially in renewable energy utilization, environmental compliance, and product development. In the past two decades, gas-phase flame synthesis has not only proved to be one of the most scalable and economical technologies for producing well-controlled nanostructured materials, including single metal-oxide, mixed-oxide nanocomposite, and carbon nanostructures, but also has been recognized as a new low-cost fabrication method of nano-devices. In this paper, we focus our review mainly on the recent trends in specific applications of flame aerosol synthesis in the last decade, e.g., usage of a substrate in stagnation geometry with controlled particle temperature-time history, application of external fields to control particle characteristics, development of advanced spray technique for doping synthesis of nanocomposites of multicomponent metal oxides or carbon-metal oxides, and fabrication of nanomaterial-based functional devices. For the possibility to improve the design and operation of flame aerosol reactors, in situ optical diagnostics for either gas phase or particle phase in flame field, along with multi-scale modeling and simulation employing gas-phase chemistry, population balance method, molecular dynamics, and nanoscale particle dynamics are summarized.

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Section: Phase-selective Laser Induced Breakdown Spectroscopymentioning

confidence: 99%

Flame aerosol synthesis of nanostructured materials and functional devices: Processing, modeling, and diagnostics

Ren

Biswas

et al. 2016

Progress in Energy and Combustion Science

259

148

View full text Add to dashboard Cite

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“…A mathematical minimum exists for (Sipkens et al 2013;Liu et al 2006b), which is related to the mean diameter and distribution parameter via:…”

Section: Estimation Of D M and Smentioning

confidence: 99%

Planar 2-color time-resolved laser-induced incandescence measurements of soot in a diffusion flame

Tian

Zhang

Gao

et al. 2017

Aerosol Science and Technology

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Planar two-dimensional two-color time-resolved laser-induced incandescence (2D-2C-TiRe-LII) is employed to investigate soot formation in a standard ethylene laminar diffusion flame. The time resolution of the 2D LII signal is realized by shifting the delay time of ICCD cameras. The two-color configuration is applied to measure the peak temperature T p of soot particles immediately after the laser pulse rather than using the energy balance to compute T p . The Sauter mean diameter D 32 and the corresponding distribution width parameter s of the measured soot particles is extracted by using an error minimization method. The method shows that a range of possible geometry mean particle diameters and corresponding distribution width parameters are also possible solutions, and further information on realizable particle size distribution widths is necessary to narrow down the extracted diameter. EDITOR Thomas KirchstetterCONTACT B. Tian

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“…The LII technique has also been used to detect carbon black particles in dispersed form (Dankers et al 2002). In addition, there have been several recent attempts to use LII technique as a diagnostic method for the flame synthesis of nano-particles such as silicon (Sipkens et al 2013) and titania (Cignoli et al 2009). In this study, submicron tungsten carbide (WC) particles were seeded into a droplet-laden flow and illuminated using a 532-nm PIV laser at a sufficiently high pulse energy.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced incandescence particle image velocimetry (LII-PIV) for two-phase flow velocity measurement

et al. 2018

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We demonstrate the use of laser-induced incandescence (LII) of submicron tungsten carbide (WC) particles as a method for particle image velocimetry (PIV). The technique allows a single laser to be used for separate measurements of velocity of two phases in a droplet-laden flow. Submicron WC particles are intentionally seeded into a two-phase flow, and heated by a light sheet generated by a double-pulsed PIV laser operating at sufficiently high pulse energy. The small size and large absorption cross section allows particles to be heated up to several thousand degrees Kelvin to emit strong incandescence signals, whilst the laser-induced temperature increase in liquid droplets/large particles is negligible. The incandescence signal from WC and Mie scattering from droplets/large particles are separately captured by deploying different filters to a PIV camera. The consecutive images of the laser-induced incandescence (LII) are used to determine the velocity field of the gas-phase flow, and those of Mie scatter are used to extract the velocity of droplets/large particles. The proposed technique is demonstrated in an air jet first and compared with the result given by a normal PIV test, which shows that submicron WC particles can accurately follow the gas flow, and that the LII images can be used to perform cross-correlations. We then apply this technique on an ethanol droplet/air jet (non-reacting), demonstrating the resulting slip velocity between two phases. The proposed technique combining PIV and LII with a single laser requires little additional equipment, and is applicable to a much higher droplet/particle density than previously feasible. Finally, the possibility of applying this technique to a flame is demonstrated and discussed.

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In situ nanoparticle size measurements of gas-borne silicon nanoparticles by time-resolved laser-induced incandescence

Cited by 63 publications

References 55 publications

Flame aerosol synthesis of nanostructured materials and functional devices: Processing, modeling, and diagnostics

Flame aerosol synthesis of nanostructured materials and functional devices: Processing, modeling, and diagnostics

Planar 2-color time-resolved laser-induced incandescence measurements of soot in a diffusion flame

Laser-induced incandescence particle image velocimetry (LII-PIV) for two-phase flow velocity measurement

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