Parts | Days | Selection | Search | Updates | Downloads | Help

O: Fachverband Oberflächenphysik

O 58: Poster Session III (Solid/liquid interfaces; Metals; Semiconductors; Oxides and insulators)

O 58.52: Poster

Wednesday, March 28, 2012, 18:15–21:45, Poster B

Laser interferometric observations of capillary rise in arrays of silicon nanochannels — •Mark Busch¹ and Patrick Huber^1,2 — 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