Interferometric Time-Resolved Probing of Acoustic Modes in Single Gold Nanospheres
Other Condensed Matter
2007-05-23 v1
Abstract
We measure the transient absorption of single gold particles with a common-path interferometer. The prompt electronic part of the signal provides high-contrast images for diameters as small as 10 nm. Mechanical vibrations of single particles appear on a longer timescale (period of 16 ps for 50 nm diameter). They reveal the full heterogeneity of the ensemble, and the intrinsic damping of the vibration. We also observe a lower-frequency mode involving shear. Ultra-fast pump-probe spectroscopy of individual particles opens new insight into mechanical properties of nanometer-sized objects.
Keywords
Cite
@article{arxiv.cond-mat/0506401,
title = {Interferometric Time-Resolved Probing of Acoustic Modes in Single Gold Nanospheres},
author = {Meindert A. van Dijk and Markus Lippitz and Michel Orrit},
journal= {arXiv preprint arXiv:cond-mat/0506401},
year = {2007}
}
Comments
4 pages, 4 figures and supplementary material (3 pages, 3 figures); submitted 18May05 to PRL