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Article Dans Une Revue Chemical Physics Letters Année : 2014

Single-shot time resolved study of the photo-reversible phase transition induced in flakes of Ti3O5 nanoparticles at room temperature

Résumé

We have performed single-shot time-resolved reflectivity measurements of the photo-reversible phase transition between λ- and β-phases of Ti3O5 nanoparticles at room temperature. These phase transitions are induced using nanosecond and millisecond laser pulses and are revealed by Raman spectroscopy. Upon nanosecond pulsed excitation, the λ- to β-phase transition is detected in about 900 ns, whereas the β- to λ-phase transition is noticed in less than 20 ns. The λ- to β-phase transition induced by quasi continuous wave laser happens on the millisecond time scale. We propose a scenario that accounts very well for the observed phenomena.
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hal-01063977 , version 1 (26-02-2015)

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Paternité - Pas d'utilisation commerciale

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Amine Ould-Hamouda, Hiroko Tokoro, Shin-Ichi Ohkoshi, Eric Freysz. Single-shot time resolved study of the photo-reversible phase transition induced in flakes of Ti3O5 nanoparticles at room temperature. Chemical Physics Letters, 2014, 608, pp.106-112. ⟨10.1016/j.cplett.2014.05.073⟩. ⟨hal-01063977⟩

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