Nonlinear optical studies of single gold nanoparticles

Leiden Repository

Nonlinear optical studies of single gold nanoparticles

Type: Doctoral Thesis
Title: Nonlinear optical studies of single gold nanoparticles
Author: Dijk, Meindert Alexander van
Issue Date: 2007-10-17
Keywords: Gold nanoparticles
Interferometry
Microscopy
Nonlinear optics
Pump-probe spectroscopy
Single molecule
Time resolved
Abstract: Gold nanoparticles are spherical clusters of gold atoms, with diameters typically between 1 and 100 nanometers. The applications of these particles are rather diverse, from optical labels for biological experiments to data carrier for optical data storage. The goal of my project was to develop new methods to study the physical properties of single gold nanoparticles on ultra-short timescales. Exciation with a short laser pulse brings a nanoparticle out of equilibrium, which makes it vibrate with a period that depends on the particle diameter and the speed of sound in gold. The vibrational period of a gold nanoparticle with a diameter of 60 nanometer is 20 picoseconds. This acoustic vibration has been detected by us for the first time for single particles. The main advantage of single-particle studies over bulk detection of these particles lies in the fact that all particles in an ensemble vibrate at slightly different frequencies, which causes increased damping due to dephasing. The damping of the vibrations of single particles only depends on the elastic coupling between the particle and its environment, which offers the possibility of using these particles as mechanical nanosensors.
Description: Promotor: M.A.G.J. Orrit, Co-promotor: M.O. Lippitz
With summary in Dutch
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Dijk, M.A. van, 2007, Doctoral thesis, Leiden University
Series/Report no.: Casimir PhD Series ; 2007-10
ISBN: 9789085930341
Handle: http://hdl.handle.net/1887/12380
 

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application/pdf Preface 68.72Kb View/Open
application/pdf Chapter 1_Gold nanoparticles 955.5Kb View/Open
application/pdf Chapter 2_Third-harmonic generation 263.4Kb View/Open
application/pdf Chapter 3_Chara ... common-path interferometer 275.9Kb View/Open
application/pdf Chapter 4_Acous ... single gold nanoparticles 954.0Kb View/Open
application/pdf Chapter 5_Corre ... and structural properties 4.357Mb View/Open
application/pdf Bibliography 120.4Kb View/Open
application/pdf Summary in Dutch 109.1Kb View/Open
application/pdf Afterword_List of publications_Curriculum vitae 34.22Kb View/Open
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