Publikation:

Behavior of thin metallic films upon melting with a ns-laser pulse

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176_procspie_1995.pdf
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1996

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Bischof, Jörg
Reinmuth, Martin
Herminghaus, Stephan
Palberg, Thomas

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PROKHOROV, Alexander M., ed., Vladimir I. PUSTOVOY, ed.. ALT'95 International Symposium on Advanced Materials for Optics and Optoelectronics. SPIE, 1996, pp. 119-127. SPIE Proceedings. 2777. Available under: doi: 10.1117/12.232207

Zusammenfassung

Thin metal films (Cu, An, Ni) and thin Si films with different thiknesses on fused silica were irradiated with a ns-pulse from a Nd:YAG-laser (y=532 om, FWHM 7 ns). In this paper we want to focus on the optical properties of an undercooled metallic liquid and the observed dewetting of the thin films. The ongoing processes were monitored in situ with ns-time-resolved reflectivity measurements. We determined the thresholds for partial and complete melting of these films. Due to the high cooling rates (up to 10 11 K/s) different "frozen" stages of the dewetting phenomenon can be studied in detail with ex situ microscopic investigations, e.g. optical microscopy and scanning near field acoustic microscopy. We present measurements which show that we have observed spinodal dewetting of these thin films.

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Fachgebiet (DDC)
530 Physik

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thin film, undercooled metallic liquid, dewetting, spinodal dewetting, laser annealing, optical properties

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ALT '95 International Conference: Advanced Materials for Optics and Optoelectronics, Prague, Czech Republic
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ISO 690BISCHOF, Jörg, Martin REINMUTH, Johannes BONEBERG, Stephan HERMINGHAUS, Thomas PALBERG, Paul LEIDERER, 1996. Behavior of thin metallic films upon melting with a ns-laser pulse. ALT '95 International Conference: Advanced Materials for Optics and Optoelectronics. Prague, Czech Republic. In: PROKHOROV, Alexander M., ed., Vladimir I. PUSTOVOY, ed.. ALT'95 International Symposium on Advanced Materials for Optics and Optoelectronics. SPIE, 1996, pp. 119-127. SPIE Proceedings. 2777. Available under: doi: 10.1117/12.232207
BibTex
@inproceedings{Bischof1996-03-11Behav-9096,
  year={1996},
  doi={10.1117/12.232207},
  title={Behavior of thin metallic films upon melting with a ns-laser pulse},
  number={2777},
  publisher={SPIE},
  series={SPIE Proceedings},
  booktitle={ALT'95 International Symposium on Advanced Materials for Optics and Optoelectronics},
  pages={119--127},
  editor={Prokhorov, Alexander M. and Pustovoy, Vladimir I.},
  author={Bischof, Jörg and Reinmuth, Martin and Boneberg, Johannes and Herminghaus, Stephan and Palberg, Thomas and Leiderer, Paul}
}
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