Laser-Induced Incandescence (LII)

Background of the Technique

Applications for Plasma-Assissted Synthesis

We have used the LII technique to detect and characterize a range of carbon nanomaterials produced using high-pressure, anodic arc discharge. In order to apply the LII heat transfer model to the plasma environment of a carbon arc, we have added plasma processes to the commonly utilized model for flames. Our key result is a detailed measurement of the sizes of largest particles existing at different radial distances from the arc axis. This constitutes the first application of LII to a high-pressure plasma environment.

Immediate Future

Currently, we are working towards the application of LII for characterization of boron nitride nanoparticles and nanotubes synthesized by plasma arc and plasma torch.

Select (non-exhaustive) references:
  • H.A. Michelsen, Understanding and predicting the temporal response of laser-induced incandescence from carbonaceous particles" , J. Chem. Phys. 118 7012 (2003).

  • D.R. Snelling et al.,"Determination of the soot absorption function and thermal accommodation coefficient using low-fluence LII in a laminar coflow ethylene diffusion flame" , Combustion and Flame 136 180 (2004).

  • C. Schulz et al., "Laser-induced incandescence: recent trends and current questions" , Appl. Phys. B, 83 333 (2006).

  • F. Liu et al.,"Influence of polydisperse distributions of both primary particle and aggregate size on soot temperature in low-fluence LII" Appl. Phys. B, 83 383 (2006).

  • H.A. Michelsen et al., "Influence of the cumulative effects of multiple laser pulses on laser-induced incandescence signals from soot" Appl. Phys. B, 87 503 (2007).

  • F. Cignoli et al., "Influence of the bath gas on the condensation of supersaturated iron atom vapour at room temperature" Appl. Phys. B, 96 593 (2009).

  • H. Bladh et al., "Influence of soot particle aggregation on time-resolved laser-induced incandescence signals", Appl. Phys. B, 104 331 (2011).

  • T.A. Sipkens et al., "In situ nanoparticle size measurements of gas-borne silicon nanoparticles by time-resolved laser-induced incandescence", Appl. Phys. B, 116 623 (2014).

  • J.M. Mitrani and M. Shneider., "Time-resolved laser-induced incadesence from multiwalled carbon nanotubes in air", Appl. Phys. Lett, 106 4 (2015).

  • M.N. Shneider., "Carbon nanoparticles in the radiation field of the stationary arc discharge", Phys. Plasmas 22, 073303 (2015).

  • S. Yatom et al.,"Detection of nanoparticles in carbon arc discharge with laser-induced incandescence", Carbon 117, 154 (2017).