Publikation: Dynamics of laser-excited nanoparticles
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2008
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HOLMES, Andrew S., ed. and others. Photon Processing in Microelectronics and Photonics VII : 21 - 24 January 2008, San Jose, California, USA. Bellingham, Wash.: SPIE, 2008, 68790H. Proceedings of SPIE. 6879. ISSN 0277-786X. ISBN 978-0-8194-7054-6. Available under: doi: 10.1117/12.774664
Zusammenfassung
By the use of stroboscopic laser pump - x-ray probe techniques and x-ray scanning techniques the structural relaxations of gold nanoparticles have been resolved on the 50 ps time scale. The structural dynamics are addressed by several methods including power scattering and small angle scattering (SAXS) to resolve microscopic and mesoscopic length scales of the composite system. The laser power is a direct measure of the dissipated heat. Thus the caloric reaction and melting transition can be monitored as function of temperature, particle size and time. Nonlinear effects are observed with femtosecond excitation, attributed to ablation. While the phenomenology for nanoparticle suspensions and surface supported monolayers display similar energetics, structure formation processes are strongly altered on the surface due to interparticle interactions.
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530 Physik
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Photon processing in microelectronics and photonics VII, 21. Jan. 2008 - 24. Jan. 2008, San Jose, California
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PLECH, Anton, Andreas SIEMS, Vassilios KOTAIDIS, Andreas MENZEL, 2008. Dynamics of laser-excited nanoparticles. Photon processing in microelectronics and photonics VII. San Jose, California, 21. Jan. 2008 - 24. Jan. 2008. In: HOLMES, Andrew S., ed. and others. Photon Processing in Microelectronics and Photonics VII : 21 - 24 January 2008, San Jose, California, USA. Bellingham, Wash.: SPIE, 2008, 68790H. Proceedings of SPIE. 6879. ISSN 0277-786X. ISBN 978-0-8194-7054-6. Available under: doi: 10.1117/12.774664BibTex
@inproceedings{Plech2008Dynam-59389,
year={2008},
doi={10.1117/12.774664},
title={Dynamics of laser-excited nanoparticles},
number={6879},
isbn={978-0-8194-7054-6},
issn={0277-786X},
publisher={SPIE},
address={Bellingham, Wash.},
series={Proceedings of SPIE},
booktitle={Photon Processing in Microelectronics and Photonics VII : 21 - 24 January 2008, San Jose, California, USA},
editor={Holmes, Andrew S.},
author={Plech, Anton and Siems, Andreas and Kotaidis, Vassilios and Menzel, Andreas},
note={Article Number: 68790H}
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<dcterms:abstract xml:lang="eng">By the use of stroboscopic laser pump - x-ray probe techniques and x-ray scanning techniques the structural relaxations of gold nanoparticles have been resolved on the 50 ps time scale. The structural dynamics are addressed by several methods including power scattering and small angle scattering (SAXS) to resolve microscopic and mesoscopic length scales of the composite system. The laser power is a direct measure of the dissipated heat. Thus the caloric reaction and melting transition can be monitored as function of temperature, particle size and time. Nonlinear effects are observed with femtosecond excitation, attributed to ablation. While the phenomenology for nanoparticle suspensions and surface supported monolayers display similar energetics, structure formation processes are strongly altered on the surface due to interparticle interactions.</dcterms:abstract>
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