This work has been done within the framework of project DANMA ANR-05-NANO-007-01 and ANR-05-NANO-007-02, financed by the “Agence Nationale de la Recherche”, France.
Vibration Dynamics of Supra-Crystals of Cobalt Nanocrystals Studied With Femtosecond Laser Pulses†
Article first published online: 29 SEP 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 20, Issue 21, pages 4176–4179, November 3, 2008
How to Cite
Lisiecki, I., Halté, V., Petit, C., Pileni, M.-P. and Bigot, J.-Y. (2008), Vibration Dynamics of Supra-Crystals of Cobalt Nanocrystals Studied With Femtosecond Laser Pulses. Adv. Mater., 20: 4176–4179. doi: 10.1002/adma.200800832
- Issue published online: 29 OCT 2008
- Article first published online: 29 SEP 2008
- Manuscript Revised: 3 JUN 2008
- Manuscript Received: 26 MAR 2008
- Agence Nationale de la Recherche, France
- cobalt nanoparticles;
- nonlinear optics;
Face-centered cubic (fcc) Supra-crystals and disordered assemblies of Co nanocrystals have their time-dependent reflectivity compared using time-resolved confocal microscopy. The differential reflectivity exhibits a behavior strongly dependent on mesoscopic organization, an effect associated with the collective coherent vibration of the cobalt nanocrystals in the fcc superstructure. The coherent vibration is mediated by interdigitated aliphatic chains acting as nanosprings.