Title
Optical Properties And Coherent Vibrational Oscillations Of Gold Nanostars
Abstract
Hot electron relaxation and coherent vibrational oscillations of gold nanostars (AuNS) were studied using femtosecond laser spectroscopy. Transient profiles feature a fast decay attributed to electron-phonon interaction and a slower decay due to phonon relaxation. Superimposed on the slow decay are oscillations attributed to coherent vibrations of the AuNS with a period dependent on probe wavelength, due to size variation of the AuNS. In addition, persistent spectral hole-burning studies indicate depletion of AuNS at the excitation wavelength and formation of redder-absorbing AuNS aggregates. In conjunction with experiments, theoretical calculations were carried out to gain insight into the coherent vibrational oscillations. © 2012 Elsevier B.V. All rights reserved.
Publication Date
8-10-2012
Publication Title
Chemical Physics Letters
Volume
543
Number of Pages
127-132
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.cplett.2012.06.058
Copyright Status
Unknown
Socpus ID
84864458620 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84864458620
STARS Citation
Wheeler, Damon A.; Green, Thomas D.; Wang, Haining; Fernández-López, Cristina; and Liz-Marzán, Luis, "Optical Properties And Coherent Vibrational Oscillations Of Gold Nanostars" (2012). Scopus Export 2010-2014. 4425.
https://stars.library.ucf.edu/scopus2010/4425