Vibration Dynamics of Supra-Crystals of Cobalt Nanocrystals Studied With Femtosecond Laser Pulses

被引：35

作者：

Lisiecki, Isabelle ^{[1
]}

Halte, Valerie ^{[2
]}

Petit, Christophe ^{[1
]}

Pileni, Marie-Paule ^{[1
]}

Bigot, Jean-Yves ^{[2
]}

机构：

[1] Univ Paris 06, Lab Mat Mesoscop & Nanometr, LM2N, CNRS,UMR 7070, F-75252 Paris, France

[2] Univ Strasbourg 1, Inst Phys & Chim Mat Strasbourg, CNRS, UMR7504, F-67034 Strasbourg 02, France

来源：

ADVANCED MATERIALS | 2008年 / 20卷 / 21期

关键词：

D O I：

10.1002/adma.200800832

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 fee superstructure. The coherent vibration is mediated by interdigitated aliphatic chains acting as nanosprings.

引用

页码：4176 / +

页数：5

共 25 条

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