On the size and morphological characterization of needle-shaped TiO2 nanoparticles in suspension

Fabrice R. A. Onofri (1) , Chantal Pelcé (1) , Lionel Meister (1) , Cedric Montet , Pierre Pelcé (2) , Séverine Barbosa (3) , Matthias Sentis (1) , Mohamed Bizi (4)

1 IUSTI - Institut universitaire des systèmes thermiques industriels
2 IRPHE - Institut de Recherche sur les Phénomènes Hors Equilibre
3 EM2C - Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion
4 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

We report the work in progress to develop a non invasive and fast optical method allowing characterizing the concentration, aspect ratio and mean size of acicular, nanorod and nanotube shaped particles. This method is based on the analysis of the spectral extinction of nanoparticles illuminated by polarized-light and whose orientation can be controlled by means of electrostatic and/or hydronamical forces. T-Matrix calculations and preliminary experimental results illustrate some aspects and features of this method.

Domaines: Physique [physics]

Fabrice R. A. Onofri, Chantal Pelcé, Lionel Meister, Cedric Montet, Pierre Pelcé, et al.. On the size and morphological characterization of needle-shaped TiO2 nanoparticles in suspension. International Conference on Optical Particle Characterization (OPC 2014), 2014, Tokyo, Japan. ⟨10.1117/12.2063938⟩. ⟨hal-01459360⟩