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Nanotechnology
With respect to nanotechnology our focus lies in the production of nanometer-sized defects on various kinds of surfaces. For the formation of such defects, highly-charged ions have been shown to be a suitable tool. Another possibility is the interaction of ultra-short and intense laser-pulses, which also modify the surface structure on a small length-scale.
The studies of friction on a nanometer-lengthscale, nanotribology, is a third major topic in nanotechnology, to which our group contributes.
Most of the investigations are carried out, using either our Ambient AFM, or a combined UHV STM/AFM, capable of providing highest resolution images in ultra-high vacuum environment.
some publications
E. Gruber, R.A. Wilhelm, R. Pétuya, V. Smejkal, R. Kozubek, A. Hierzenberger, B.C. Bayer, I. Aldazabal, A.K. Kazansky, F. Libisch, A.V. Krasheninnikov, M. Schleberger, S. Facsko, A.G. Borissov, A. Arnau, and F. Aumayr
Ultrafast electronic response of graphene to a strong and localized electric field
Nature Communications 7 (2016) 13948 (7 pages)
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A. S. El-Said, R. A. Wilhelm, R. Heller, M. Sorokin, S. Facsko, and F. Aumayr
Tuning the fabrication of nanostructures by low-energy highly charged ions
Physical Review Letters 117 (2016) 126101 (5 pages)
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E. Gruber, P. Salou, L. Bergen, M. El Kharrazi, E. Lattouf, C. Grygiel, Y.Y. Wang, A. Benyagoub, D. Levavasseur, J. Rangama, H. Lebius, B. Ban-d’Etat, M. Schleberger, and F. Aumayr
Swift heavy ion irradiation of CaF2 – from grooves to hillocks in a single ion track
Journal of Physics: Condensed Matter 28 (2016) 405001 (7 pages),
IOP coverage
R. A. Wilhelm, E. Gruber, R. Ritter, R. Heller, A. Beyer, A. Turchanin, N. Klingner, R. Hübner, M. Stöger-Pollach, H. Vieker, G. Hlawacek, A. Gölzhäuser, S. Facsko, and F. Aumayr
Threshold and efficiency for perforation of 1 nm thick carbon nanomembranes with slow highly charged ions
2D Materials 2 (2015) 035009 (6 pages)
R.A. Wilhelm, E, Gruber, R. Ritter, R. Heller, S. Facsko, and F. Aumayr
Charge exchange and energy loss of slow highly charged ions in 1 nm thick carbon nanomembranes
Physical Review Letters 112 (2014) 153201 (5 pages)
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Y. Y. Wang, C. Grygiel, C. Dufour, J. R. Sun, Z. G. Wang, Y. T. Zhao, G. Q. Xiao, R. Cheng, X. M. Zhou, J. R. Ren, S. D. Liu, Y. Lei, Y. B. Sun, R. Ritter, E. Gruber, A. Cassimi, I. Monnet, S. Bouffard, F. Aumayr and M. Toulemonde
Energy deposition by heavy ions: Additivity of kinetic and potential energy contributions in hillock formation on CaF2
Nature Scientific Reports 4 (2014) 5742 (6 pages)
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R. Ritter, R. A. Wilhelm, M. Stöger-Pollach, R. Heller, A. Mücklich, U. Werner, H. Vieker, A. Beyer, S. Facsko, A. Gölzhäuser, and F. Aumayr
Fabrication of nanopores in 1 nm thick carbon nanomembranes with slow highly charged ions
Applied Physics Letters 102 (2013) 063112 (5 pages)
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A.S. El-Said, R.A. Wilhelm, R. Heller, S. Facsko, C. Lemell, G. Wachter, J. Burgdörfer, R. Ritter, and F. Aumayr
Phase diagram for nanostructuring CaF2 surfaces by slow highly charged ions
Physical Review Letters 109 (2012) 117602 (5 pages)
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Review:
F. Aumayr, S. Facsko, A. S. El-Said, C. Trautmann and M. Schleberger
Topical Review: Single-ion induced surface nanostructures - A comparison between slow highly-charged and swift heavy ions
Journal of Physics: Condensed Matter 23 (2011) 393001 (23 pages)
A.S. El-Said, R. Heller, W. Meissl, R. Ritter, S. Facsko, C. Lemell, B. Solleder, I. Gebeshuber, G. Betz, M. Toulemonde, W. Möller, J. Burgdörfer, and F. Aumayr
Creation of Nanohillocks on CaF2 Surfaces by Single Slow Highly Charged Ions
Physical Review Letters 100 (2008) 237601 (1-4)