Regensburg 2013 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 87: Focussed Session: Solid-liquid Interfaces III
O 87.1: Vortrag
Freitag, 15. März 2013, 10:30–10:45, H31
Nonintrusive Optical Visualization of Surface Nanobubbles — Stefan Karpitschka1, Erik Dietrich2,3, James Seddon2, Harold Zandvliet3, Detlef Lohse2, and •Hans Riegler1 — 1MPI für Kolloid- und Grenzflächenforschung, Potsdam, Germany — 2Physics of Fluids, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands — 3Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
Individual surface nanobubbles are visualized with nonintrusive optical interference-enhanced reflection microscopy [1], demonstrating that their formation is not a consequence of the hitherto used intrusive atomic force microscopy technique. We then use this new and fast technique to demonstrate that surface nanobubbles form in less than a few seconds after ethanol-water exchange, which is the standard procedure for their preparation, and examine how they react to temperature variations [2,3].
[1] R. Köhler, P. Lazar, and H. Riegler, Appl. Phys. Lett. 89, 241906 (2006).
[2] S. Karpitschka, E. Dietrich, J.R.T. Seddon, H.J.W. Zandvliet, D. Lohse, and H. Riegler, PRL 109, 066102 (2012).
[3] Nature Nanotechnology (Research Highlights) 7, 549 (2012).