Vibrational spectroscopy and energy relaxation of nanocubes, nanoboxes and nanocages
Hristina Petrova, Chien-Hua Lin, Susanna De Leijer, Min Hu, Joseph M McLellan, Andrew R Siekkinen, Benjamin J Wiley, Manuel Marquez, Younan Xia, John E Sader, Gregory V Hartland, M Spitler (ed.), F Willig (ed.)
PHYSICAL CHEMISTRY OF INTERFACES AND NANOMATERIALS V | SPIE-INT SOC OPTICAL ENGINEERING | Published : 2006
Irradiating metal particles by an ultrafast laser pulse produces rapid heating of the lattice. This can lead to coherent excitation of the vibrational modes of the particle that correlate with the expansion co-ordinates. By comparing the measured periods to continuum mechanics calculations, these experiments can provide information about the elastic constants of the particle if the size and shape are known. In this paper recent results are presented for particles with cubic symmetry, specifically, nanocubes, nanoboxes (hollow cubes) and nanocages (nanoboxes with holes on the corners and/or facets of the box). The way the vibrational modes are assigned, and the information content of the expe..View full abstract
Awarded by NSF
Awarded by Petroleum Research Fund
This work has been supported in part by a DARPA-DURINT subcontract from Harvard University and a fellowship from the David and Lucile Packard Foundation. Y. X. is an Alfred P. Sloan Research Fellow and a Camille Dreyfus Teacher Scholar. G. V. H. acknowledges the support of the NSF (Grant Number CHE0 2-36279), and the Petroleum Research Fund (Grant Number PRF-39761AC) administered by the American Chemical Society.