Hostname: page-component-745bb68f8f-5r2nc Total loading time: 0 Render date: 2025-01-27T13:16:38.076Z Has data issue: false hasContentIssue false
  • English
  • Français

Laser-induced Dewetting Nanomorphologies in Single and Bilayer Metal Films

Published online by Cambridge University Press:  01 February 2011

Hare Krishna ,
Christopher Favazza ,
R. Sureshkumar  and
R. Kalyanaraman
Hare Krishna
Affiliation:
harek@physics.wustl.edu, Washington University in St. Louis, Physics, 6490, Enright Ave, Apt # 212, St. Louis, MO, 63130, United States
Christopher Favazza
Affiliation:
cfavazza@physics.wustl.edu, Washington University in St. Louis, Department of Physics, St. Louis, MO, 63130, United States
R. Sureshkumar
Affiliation:
suresh@che.wustl.edu, Washington University in St. Louis, Department of Energy, Environmental and Chemical Engineering, St. Louis, MO, 63130, United States
R. Kalyanaraman
Affiliation:
ramkik@wuphys.wustl.edu, Washington University in St. Louis, Department of Physics, St. Louis, MO, 63130, United States
Get access

Abstract

Spatially ordered patterns result under ns laser-induced dewetting of nanoscopic metallic films like Co and Ag on inert substrates like SiO2. In both cases, the observed ordering length scale is due to thin film hydrodynamic instability with spinodal-like character. However, the morphological pathway during dewetting is different for the two metals: occurring through development of bicontinuous structures in the case of Ag and by progression of cellular networks for Co. Dewetting in bilayer structures of Ag and Co on SiO2 show that the morphology evolution is dictated by the thicker of the two films in the bilayer structure. We applied linear stability analysis to predict the length scales in single and bilayer metal film. The experimental observations are in good agreement with theoretical predictions from the analysis. An important result was that the length scales for the bilayer film were significantly smaller than a single layer of the same thickness suggesting that further control of patterning length scales may be achieved through multilayer dewetting.

Keywords

laser-induced reactionnanostructuremorphology
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 960: Symposium N – Self Assembly of Nanostructures Aided by Ion- or Photon-Beam Irradiation—Fundamentals and Applications , 2006 , 0960-N03-02
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Quinten, M., Leitner, A., Krenn, J. and Aussenegg, F, “Electromagnetic energy transport via linear chains of silver nanoparticles”, Opt. Lett., 23, 1331–3, 1998.Google Scholar
2. Maier, S., Kik, P., Atwater, H., Meltzer, S., Harel, E. Koel, B and Requicha, A., Nature Mater., 2, 229, 2003.Google Scholar
3. Takeshita, H., Suzuki, Y., Akinaga, H., Mizutani, W., and Tanaka, K., "Magneto-optical response of nanoscaled cobalt dots array”, Appl. Phys. Lett., 68, 3040–3042, 1996.Google Scholar
4. Fruchart, O., Klaua, M., Barthel, J., and Kirschner, J., "Self-Organized Growth of Nanosized Vertical Magnetic Co Pillars on Au(111)", Phys. Rev. Lett., 83, 2769–2772, 1999.Google Scholar
5. Lodder, J., Haast, M. and Abelman, L., in Proceedings of NATO Advanced Study Institute on Magnetic Systems Beyond 2000, Dordrecht, Netherlands, edited by Hadjippannayis, G. C., Kluwer Academic, Dordrecht, 2002, pp.117–145.Google Scholar
6. Brochard-Wyart, F., and Daillant, J., Can. J. Phys. 68, 1084, 1990.Google Scholar
7. Brochard-Wyart, F., Gennes, P. G. and Quere, D.. Capillarity and Wetting Phenomenon. Springer, New York, 2003.Google Scholar
8. Reiter, G., Phys. Rev. Lett., 68, 75, 1992.Google Scholar
9. Bischof, J., Reimmuth, M., Boneberg, J., Herminghaus, H., Palberg, T., and Leiderer, P., Proc. SPIE, 2777, 119, 1996.Google Scholar
10. Bischof, J., Scherer, D., Herminghaus, H., and Leiderer, P., Phys. Rev. Lett., 77, 1536, 1996.Google Scholar
11. Favazza, C., Trice, J., Krishna, H., Kalyanaraman, R and Sureshkumar, R.,”Laser-induced shortand long-range ordering of Co nanoparticles on SiO2 , Appl. Phys. Lett., 88, 1531181–3, 2006.Google Scholar
12. Favazza, Christopher, Kalyanaraman, Ramki and Sureshkumar, Radhakrishna, “Robust nanopatterning by laser-induced dewetting of metal nano films”, Nanotechnology, 17, 4229–4234, 2006.Google Scholar
13. Pototsky, Andrey, Bestehorn, Michael, Merkt, Domnic and Thiele, Uwe, “Alternative pathways of dewetting for a thin liquid two-layer film”, Phys. Rev. E, 70, 025201, 2004.Google Scholar
14. Pototsky, A., Bestehorn, M., Merkt, D. and Thiele, U., “Evolution of interface patterns of threedimensional two-layer liquid films”, Euro. Phys. Lett., 74, 665–671, 2006.Google Scholar
15. Trice, J., Thomas, D., Favazza, C., Sureshkumar, R. and Kalyanaraman, R., PRB (Submitted) 2006 (Arxiv cond-mat/0609182).Google Scholar
16. Vrij, A., “Possible mechanism for the spontaneous rupture of thin free liquid films, Faraday Soc., 42, 23–33, 1966.Google Scholar
17. Sharma, Ashutosh and Khanna, Rajesh. “Pattern formation in unstable thin liquid films”, Phys. Rev. Lett., 81, 3463–3466, 1998.Google Scholar
18. Islaelachvili, Jacob N., “Intermolecular and surface forces”, Academic press, London, 1985.Google Scholar