Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 58: Poster Session III (Solid/liquid interfaces; Metals; Semiconductors; Oxides and insulators)
O 58.52: Poster
Mittwoch, 28. März 2012, 18:15–21:45, Poster B
Laser interferometric observations of capillary rise in arrays of silicon nanochannels — •Mark Busch1 and Patrick Huber1,2 — 1Experimental Physics, Saarland University, Saarbrücken, Germany — 2Faculty of Physics and Astronomy, Pontifical Catholic University, Santiago, Chile
We present measurements on the capillary rise of liquids in mesoporous silicon films. The time-dependent rise level of the liquid within the pores has been determined with laser interferometry [1]. The measurements are based on the change of refractive index during the filling of the pores. Such measurements allow one to explore the initial stages of nanochannel filling.
In particular we focus on the orientation and temperature dependence of the filling process. The presented measurements were taken with 2-Propanol and 1-Decanol.
[1] Acquaroli, L. N. et al. Capillary Filling in Nanostructured Porous Silicon, Langmuir 2011, 27(5), 2067-2072