Photothermal Properties of Gold Nanoparticles
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Hristina Petrova
This paper describes our recent time-resolved spectroscopy studies of the properties of gold particles at high laser excitation levels. In these experiments, an intense pump laser pulse rapidly heats the particle, creating very high lattice temperatures — up to the melting point of bulk gold. These high temperatures can have dramatic effects on the particle and the surroundings. The lattice temperature created is determined by observing the coherently excited the vibrational modes of the particles. The periods of these modes depend on temperature, thus, they act as an internal thermometer. We have used these experiments to provide values for the threshold temperatures for explosive boiling of the solvent surrounding the particles, and laser induced structural transformations in non-spherical particles. The results of these experiments are relevant to the use of metal nanoparticles in photothermal therapy, where laser induced heating is used to selectively kill cells.
© Oldenbourg Wissenschaftsverlag
Articles in the same Issue
- Preface – Professor Dr. Arnim Henglein on the occasion of his 80th birthday
- Surface Chemistry of Semiconductor Nanocrystals
- Synthesis and Assembling of Semiconductor and Metal Nanocrystals
- The Electronic Role of the TiO2 Light-Scattering Layer in Dye-Sensitized Solar Cells
- Primary Processes During the Photodeposition of Ag Clusters on TiO2 Nanoparticles
- Photoactivity of Sol–Gel Derived Nitridated ZnxTiyOz-Films
- Photothermal Properties of Gold Nanoparticles
- Electro-Assisted Photo-Luminescence of Colloidal Germanium Nanoparticles
- Cobalt-Doped ZnO Nanorods Fabricated by a Simple Wet Chemical Route in Alcoholic Solution
- Influence of the Choice of Indium Precursor and Ligand on the Synthesis of InP Nanocrystals
- Formation of the Silver Hydride Ion AgH+ upon the Reduction of Silver Ions by H· in Aqueous Solution. A Pulse Radiolysis Study
- An Electrochemical Model for Gold Colloid Formation via Citrate Reduction
- Synthesis of Monodisperse PbS Nanoparticles and Their Assembly into Highly Ordered 3D Colloidal Crystals
Articles in the same Issue
- Preface – Professor Dr. Arnim Henglein on the occasion of his 80th birthday
- Surface Chemistry of Semiconductor Nanocrystals
- Synthesis and Assembling of Semiconductor and Metal Nanocrystals
- The Electronic Role of the TiO2 Light-Scattering Layer in Dye-Sensitized Solar Cells
- Primary Processes During the Photodeposition of Ag Clusters on TiO2 Nanoparticles
- Photoactivity of Sol–Gel Derived Nitridated ZnxTiyOz-Films
- Photothermal Properties of Gold Nanoparticles
- Electro-Assisted Photo-Luminescence of Colloidal Germanium Nanoparticles
- Cobalt-Doped ZnO Nanorods Fabricated by a Simple Wet Chemical Route in Alcoholic Solution
- Influence of the Choice of Indium Precursor and Ligand on the Synthesis of InP Nanocrystals
- Formation of the Silver Hydride Ion AgH+ upon the Reduction of Silver Ions by H· in Aqueous Solution. A Pulse Radiolysis Study
- An Electrochemical Model for Gold Colloid Formation via Citrate Reduction
- Synthesis of Monodisperse PbS Nanoparticles and Their Assembly into Highly Ordered 3D Colloidal Crystals
