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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/60881
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- White light scattering spectroscopy and electron microscopy of laser induced melting in single gold nanorods
- Zijlstra, Peter; Chon, James W. M.; Gu, Min
- We present the first measurements of laser induced melting and reshaping of single gold nanorods. Using a combination of white light scattering spectroscopy and electron microscopy we find a melting energy of 260 fJ for nanorods with an average size of 92 x 30 nm. Contrary to previous reports on ensembles of nanorods, this melting energy corresponds well to the theoretical prediction of 225 fJ. We observe a gradual shape change from a long and thin rod to a shorter and wider rod, which eventually collapses into a sphere when enough laser energy is deposited. We also observe that higher aspect ratio particles are thermodynamically less stable, leading to a greater reduction of the aspect ratio at lower laser pulse energy densities.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Physical Chemistry Chemical Physics, Vol. 11, no. 28 (Jul 2009), pp. 5915-5921
- Publication year
- Royal Society of Chemistry
- Publisher URL
- Copyright © 2009 The Royal Society of Chemistry. The authors give the Royal Society of Chemistry the exclusive right and licence throughout the world to edit, adapt, translate, reproduce and publish the Paper in all formats, in all media and by all means (whether now existing or in future devised). Published version of the paper reproduced here for non-commercial purposes only in accordance with the copyright policy of the publisher. This paper is made available for personal use only; no further reuse is permitted.